Cfm to fpm calculator

Calculate Air Flow Volume (CFM) Now that we’ve calculated Flow Velocity ( 2686 FPM) and Duct Cross Sectional Area (1.07 square feet) we can calculate Air Flow in CFM for our 14" diameter round duct using the equation: CFM = FPM x Duct Cross Sectional Area. CFM = 2,686 x 1.07 sq. feet.

Here first need to find how much output there is per unit in tons. 1 ton = 12,000 British thermal units (BTUs) An average output of an HVAC unit is 400. Let us calculate this for a 10-ton HVAC unit. It serves a 2,000-square-foot building. Airflow will be 10 tons x 400/2,000 = 2 CFM per square foot. If the kitchen is 100 square feet, 400 CFM ...Sep 28, 2020 ... The output from this calculator was is complete wrong. 4000 fpm through a 10” round duct is 2182 CFM. This calculator output ~8000 CFM. App ...The formula for calculating BTU loss or gain in converting CFM to BTU is temperature difference times actual CFM leakage times 1.08 equals BTU loss or gain. CFM is the actual cubic...I feel like graphing calculators were only really a “thing” for most people during that year or two of high school when you were forced to use one for whatever math class you were ...The equation would be: 2,400 / 12 = 200 CFM. All the calculators you find online, including ours, “do the math” for you by converting how many ACH you desire into how many minutes per change. 15 ACH = 4 minutes each. 10 ACH = 6 minutes each. 8 ACH = 7.5 minutes each, etc.Register CFM depends on how many registers per room you have. For instance, if you have 3 registers in the same room, divide it by 3. So, 133.33/3 = 44.44 CFM. So per register will have 44.44 CFM in that room! Ideally, the average CFM per register is between 25 and 200.

To calculate the minimum cubic feet per minute rating needed for an exhaust fan, multiply the bathroom’s length, width and height, and then multiply that result by 0.13. The final ...This flow rate calculator uses flow velocity and cross-sectional flow area data to determine the volumetric flow rate of liquid. You can calculate the flow rate in five simple steps: Select the shape of the cross-section of the channel. Input all the measurements required to compute the cross-sectional area. Input the average velocity of the flow.CFM stands for Cubic Feet per Minute and is the most common way to measure airflow. Areas are measured in square units (like square feet). Volumes (like a room full of air) are measured in cubic units — CFM determines how much cubic feet can be moved or exchanged each minute. A room measuring 1,000 ft³ would need a 1,000 CFM system to ...Ejemplo de calculadora para convertir CFM a FPM. Supongamos que los CFM de un sistema se miden en 100. Usando la fórmula: Vea también Calculadora de plano inclinado en línea. FPM = 100 * 196.8504 FPM ≈ 19,685.04 Feet per Minute. Esto demuestra que 100 CFM equivalen aproximadamente a 19,685.04 pies por minuto de …Mar 8, 2024 · The core of the LPM to CFM Calculator is a simple yet powerful formula: See also Laser Power Density Calculator Online. CFM = LPM / 28.317. Here's a breakdown of the formula: CFM: Cubic feet per minute (the unit you want to convert to) LPM: Liters per minute (the unit you are converting from) 28.317: Conversion factor that accounts for the ... Air velocity (FPM) and air flow (CFM) are closely connected. In many cases, you will need to convert FPM to CFM; basically, you are converting the speed of air per minute to the volume of air per minute. We are going to help you out with the FPM to CFM conversion step-by-step.First off, we need to d...

Quick Reference ; 10 MPM. 32.81 FPM ; 20 MPM. 65.62 FPM ; 30 MPM. 98.43 FPM ; 40 MPM. 131.23 FPM.Apr 25, 2022 · Answer #1: 350 – 400 CFM per ton of HVAC capacity. That’s the answer to the question: What CFM do I need for my HVAC system to do its job? This answer of 350-400 cubic feet per minute for each 12,000 BTUs of AC cooling is optimal for the system to run efficiently while adequately cooling and dehumidifying the space. 12,000 BTUs = 1 Ton V (Air Velocity) = Q (Airflow) / A (Duct Cross-Section) V represents the air velocity and is expressed in FPM (feet per minute). Q is airflow and is expressed in CFM …Every time you invest or save your money, you're buying back some of your time and freedom. Figure out how many days of freedom that next purchase will cost you! Every time you inv...Formula to calculate CFM. First, you have to know the volume of the room and how many times you want air to exchange. Example: Suppose you have a room that has a volume of 700 cubic feet, if requires two air turnovers per minute, calculate the CFM of the room. Therefore, the CFM of the room is 23.3. Learn how to calculate CFM.To calculate a fan's airflow capacity in cubic feet per minute (cfm), multiply the average airspeed in feet per minute (fpm) by the square footage of the fan face. (The area of a circle is equal to bd^2/4, where d is the diameter in feet.) 2.

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Contact us at (847) 773-0645 and our specialists will answer all your questions about how to calculate air velocity in duct systems for a perfectly operating heating and cooling unit. Try out our online airflow rate calculator that allows you to calculate the airflow velocity and airflow rate in a pipe or duct, as well as learn the formulas. 1098 CFM / 5.55 sq ft = 197 FPM 1098 CFM / 12 sq ft = 91 FPM What I'm ultimately trying to do is determine an accurate FPM calculation, so that I can compare that value to data sheets on various filters. The data sheets I have, have tables and graphs where the X axis is FPM and the Y axis is Pressure Drop.1 cfm = 1.69901082000001 cubic m/hr. Where, cubic m/hr = cubic metre/hour. cfm = cubic foot/minute. Online CFM to CMH Converter. Use this simple airflow converter tool to calculate cfm to cmh cubic m/hr online.Pull the airflow vertically to hit the friction loss line at 0.1 in.wg. Then, pull the line diagonally to the right and find the suitable duct diameter. 14″ round duct is less than ideal because the friction loss will be greater than 0.1 in.wg as the maximum airflow for 14″ round ducts is around 1027 cfm.Air Flow Calculator - Linear Bar Grilles - AAG2020. Air Flow Calculator – Linear Bar Grilles. Use the calculator below to quickly and easily determine the grille airflow. Grille Length (inches) Grille Height (inches) Please fill in EITHER CFM (cubic feet per minute) value OR FPM (feet per minute) value. Known CFM (Calculate FPM based on known ...

The cubic foot per minute (symbol: CFM) is a the unit of volumetric flow rate equal to that of a cubic foot moving each minute. It is equal 0.000471947 m 3 /s. Definition. Relation to SI units. ≡ 1 ft 3 /min.The volumetric flow rate of a liquid or gas in cubic feet per minute. 1 CFM equals approximately 0.47 liter per second. Metric conversions and more. ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data ...Include all space inside the bathroom, even if partitions like shower stalls or toilets divide the room. Multiply the length by the width to calculate the total square …The calculator uses the formula: Pipe Diameter (in inches) = √((4 * Air Volume (CFM)) / (π * Airflow Velocity (FPM))) In this equation, “Air Volume (CFM)” represents the volume of air the dust collector handles, expressed in Cubic Feet per Minute. “Airflow Velocity (FPM)” denotes the desired speed of the air in the duct, denoted in ... The velocity of an air duct with area 16 sq.ft and air flow of 10 CFM would be : V = 10 / 16 = 0.625 FPM. When converted to FPS, it is 0.0104 FPS. Air duct also termed as ductulator is a passage that is used to provide fresh air into rooms, buildings etc., Air ducts may be in circular, square and in rectangular shapes. Also on TLV.com. Online calculator to quickly determine Air Flow Rate through Piping. Includes 53 different calculations. Equations displayed for easy reference.24,883,200. cubic inch per year (in 3 /year) 908,839,470. 4,544,197,350. 9,088,394,700. Other units to CFM Conversions. A volumetric flow rate with units of CFM implies that the flow rate was measured at actual conditions (actual pressure, actual temperature). Cubic Foot Per Minute (CFM) conversion chart helps you make your conversions easier ...May 29, 2018 ... To calculate Air Flow in Cubic Feet per Minute (CFM), determine the Flow Velocity in feet per minute, then multiply this figure by the Duct ...

Formula to calculate CFM. First, you have to know the volume of the room and how many times you want air to exchange. Example: Suppose you have a room that has a volume of 700 cubic feet, if requires two air turnovers per minute, calculate the CFM of the room. Therefore, the CFM of the room is 23.3. Learn how to calculate CFM.

CFM to L/s Calculator. Conversion from Cubic Feet Per Minute to Liters Per Second can be just multiplying the CFM value with the 0.47194745. Here is the online CFM to L/s calculator to do cubic feet per minute to liters per second conversion in a quick time.More information from the unit converter How many cubic m/hr in 1 cfm? The answer is 1.69901082. We assume you are converting between cubic metre/hour and cubic foot/minute.You can view more details on each measurement unit: cubic m/hr or cfm The SI derived unit for volume flow rate is the cubic meter/second. 1 cubic meter/second is …To convert liters per minute to cubic feet per minute, multiply the liters per minute value by 0.035314666213 or divide by 28.316846999. As an example, let's convert 100 liters per minute (L/min) to cubic feet per minute (cfm). To do this, divide 100 by the conversion factor of 28.316846999. Therefore, 100 L/min is equivalent to approximately 3 ... This manometer outputs the readings in velocity pressure (unit – inWC) and in Feet per Minute (FPM). This conversion is done by hand using the following Bernoulli formula: So, with a reading of 0.0141"WC on the manometer, you effectively have 476 FPM of air. Now we need CFM. FPM is turned into CFM by multiplying the average FPM in the duct by ... Convert CFM to FPM Calculator Online. The Convert CFM (Cubic Feet per Minute) to FPM (Feet per Minute) Calculator simplifies the conversion process from a volume flow rate to a velocity measure.The desired size of each louver blade (in inches). The total area of all louvers combined (in square inches). To calculate the Total Louver Area, you can use the formula: Total Louver Area = (Required CFM * 144) / Face Velocity (FPM) Here, 144 is a conversion factor to convert CFM to cubic inches per minute (1 cubic foot = 144 cubic inches).Below you will also find an SCFM to CFM calculator that automatically converts SCFM to CFM. Here is the complete SCFM to CFM formula we derive further on: CFM = SCFM × (14.7 psi÷ Pactual ) × (Tactual + 459.67) ÷ (68°F + 459.67) From experience, we all know that warmer air rises (due to lower density).Welcome to the fan calculator — or CFM calculator. Here, we will help you calculate the mass flow rate and CFM of a given fan. We will introduce you to the mass flow rate equation and explain what CFM is and what the abbreviation CFM stands for (hint: Cubit Feet per Minute). We made sure that no fan feels excluded, whether it's the humble ...Air Flow Calculator - Linear Bar Grilles - AAG2020. Air Flow Calculator – Linear Bar Grilles. Use the calculator below to quickly and easily determine the grille airflow. Grille Length (inches) Grille Height (inches) Please fill in EITHER CFM (cubic feet per minute) value OR FPM (feet per minute) value. Known CFM (Calculate FPM based on known ...

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Contact us at (847) 773-0645 and our specialists will answer all your questions about how to calculate air velocity in duct systems for a perfectly operating heating and cooling unit. Try out our online airflow rate calculator that allows you to calculate the airflow velocity and airflow rate in a pipe or duct, as well as learn the formulas. This is the number you will match your filter to. Example: Room size: 10’x12’x8’ (960 cubic feet) 960 cubic feet / 3 minutes = 320CFM (Minimum recommended CFM to exchange the air every 3 minutes) For recirculating systems, you can use the same length x width x height but divide by 1.5. This will give you a high cycle rate while still ...IPv6 Subnet Calculator. A subnet is a division of an IP network (internet protocol suite), where an IP network is a set of communications protocols used on the Internet and other similar networks. It is commonly known as TCP/IP (Transmission Control Protocol/Internet Protocol). The act of dividing a network into at least two separate networks ... 3. Learn basic fan calculation formulas. This practical math formula goes a long way when you're considering air ventilation improvement in an indoor space: CFM = (fpm * area) CFM (Cubic Feet per Minute) is calculated by multiplying the velocity (Feet per Minute) with the area (Square Feet). Question: I have a warehouse that I want to exhaust ... The rate of air change per hour is calculated by using the formula ACH = 60 x CFM/V. In SI units, the calculation formula is expressed as n = 3600 x Q/V, according to the Engineeri...Online FPM to CFM unit converter calculator helps to calculate cubic feet per minute (CFM) from feet per minute (FPM) and area values as input. In SI units, 1 feet …Nov 6, 2023 · Calculate Air Flow Volume (CFM) Now that we’ve calculated Flow Velocity ( 2686 FPM) and Duct Cross Sectional Area (1.07 square feet) we can calculate Air Flow in CFM for our 14" diameter round duct using the equation: CFM = FPM x Duct Cross Sectional Area. CFM = 2,686 x 1.07 sq. feet. The flow rate of air can be calculated using the formula: Flow Rate (in cubic feet per minute, CFM) = Velocity (in feet per minute, FPM) x Cross-sectional Area (in square feet, sq ft) How do you convert air flow to CFM? To convert air flow to CFM, you need to know the velocity and cross-sectional area of the air. The formula is the same as above:The formula to calculate ACH is 60 multiplied by the cfm of your air exchange device, divided by the volume of air in the room. The ACH formula as an expression is: ACH=60Q/Vol. ACH = number of air changes per hour. Q = Volumetric flow rate of air in cubic feet per minute (cfm)To calculate a fan's airflow capacity in cubic feet per minute (cfm), multiply the average airspeed in feet per minute (fpm) by the square footage of the fan face. (The area of a circle is equal to bd^2/4, where d is the diameter in feet.) 2. ….

Please share if you found this tool useful: ; 1 Cubic Feet Per Minute to Liters Per Second = 0.4719, 70 Cubic Feet Per Minute to Liters Per Second = 33.0363 ; 2 ...It is important to monitor the overall amount you have invested in stocks in your portfolio to stay on track with your investment strategy. As stock prices fluctuate, the overall v... Velocity Pressure (IN. W.C.) = (CFM/Effective Area/4005)2 Volume (CFM) = IN. W.C. X 4005 X Effective Area Velocity (CFM) = FPM X Effective Area Velocity (FPM) = CFM/Effective Area Velocity (FPM) = 4005 X IN. W.C. EQUAL AREAS ROUND DUCT.316R.548R.707R.837R.949Radius Our Online, Easy-to-Use Calculator lets Users Calculate the Velocity or Flow Rate for a given Air Diffuser. Use in English or Metric Units ©2014-2024 by Adicot, Inc. Report a Problem with our HVAC Calculators Adicot, Inc.'s calculators are intended for professionals. are intended for professionals.The ACFM calculation formula is derived as follows: See also Bushing Press Fit Calculator Online. ACFM = (SCFM * (460 + gas temperature in Rankine)) / (530.67 * (gas pressure in psia)) In this formula: ACFM represents the Actual Cubic Feet per Minute, denoting the true flow rate of gas. SCFM refers to the Standard Cubic Feet per Minute, … It can be expressed in units as ft 3 /min.The CFM can be calculated based on the FPM (Feet per minute) and the area of the air space. Formula : Cubic Feet Per Minute (CFM) = Feet Per Minute x Area of Air Space. Step 1: Consider the area of an air space as 100 square feet and the feet per minute (FPM) as 50. Area = 100 sq.ft. The Formula of BTU to CFM Calculator. The BTU to CFM calculator employs the following formula: CFM = (BTU / (ΔT * 1.08)) Where: CFM: Cubic Feet per Minute. BTU: British Thermal Units. ΔT: Temperature difference in degrees Fahrenheit between the entering air and leaving air. Understanding this formula is crucial for those seeking to optimize ...As an example, let's convert 100 cubic feet per minute (cfm) to cubic meters per minute (m3/min). To do this, divide 100 by the conversion factor of 35.3146662313. 100 cfm ÷ 35.3146662313 = 2.8317 m3/min. Therefore, 100 cfm is equivalent to approximately 2.8317 m3/min. cfm to m3/min conversion formula: m3/min = cfm * 0.028316846999Jul 22, 2022 · Now, multiply 3 x 400 CFM to get 1200. You would need a blower that can move 1200 CFM. Pro Tip: Round up – If you’re more than halfway to the next larger size, round up to it. In our example, if you needed 33,500 BTU, or 2.75 tons, round up to 3 tons and multiply by 400 CFM per ton for the same result – 1,200 CFM. CFM to LPM Calculator ... Welcome to the leading manufacturer of high quality cleanroom environmental monitoring equipment - quality, accuracy and repeatability! Cfm to fpm calculator, Jul 23, 2008 ... Is there a formula for converting FPM into LFM. ... The Golden Calculator Award ... FPM, the CFM would be considerably lower than 130 - more like 6!, Feb 14, 2024 · Example. Suppose a duct with an area of 5 square feet and the air is moving at a velocity of 200 feet per minute (FPM), you can find the Cubic Feet per Minute (CFM) using this formula: CFM = (Area in square feet) x (FPM) Substituting the values: CFM = 5 sq ft x 200 FPM = 1000 CFM. So, the airflow rate in this duct is 1000 CFM. , CFM to CMH Converter Formula. Home › Science › Air Flow. Equation for calculate cfm to cmh converter is, 1 cfm = 1.69901082000001 cubic m/hr. Where, cubic m/hr = cubic metre/hour. cfm = cubic foot/minute., Here is the complete SCFM to CFM formula we derive further on: CFM = SCFM × (14.7 psi ÷ Pactual ) × (Tactual + 459.67) ÷ (68°F + 459.67) Example of SCFM to CFM calculator use: 500 SCFM at 60°F temperature and 16 psi pressure is equal to 452.41 CFM. You will find the calculator (with calculated chart) below the explanation of SCFM vs CFM ..., Aug 21, 2017 ... In this series of Tech Tips videos, we will show you how to use airflow measurements to calculate the CFM. Learn more about Carrier at ..., Include all space inside the bathroom, even if partitions like shower stalls or toilets divide the room. Multiply the length by the width to calculate the total square …, I feel like graphing calculators were only really a “thing” for most people during that year or two of high school when you were forced to use one for whatever math class you were ..., CFM to LPM Calculator ... Welcome to the leading manufacturer of high quality cleanroom environmental monitoring equipment - quality, accuracy and repeatability!, RPM= (FPM / π) / (Diameter * 12) Where, FPM = Feet Per Minute, D = Diameter. π = 3.1428571. Online rpm to fpm converter calculator. Use this simple drilling rpm to fpm converter calculator to convert Feet Per Minute to Revolution Per Minute., CALCULATIONS The Pitot tube is the primary standard used to calibrate all other air-flow measuring devices. Therefore, it is a natural application for use in devices that measure airflow in ducts and pipes for HVAC or industrial, Register CFM depends on how many registers per room you have. For instance, if you have 3 registers in the same room, divide it by 3. So, 133.33/3 = 44.44 CFM. So per register will have 44.44 CFM in that room! Ideally, the average CFM per register is between 25 and 200., Welcome to the fan calculator — or CFM calculator. Here, we will help you calculate the mass flow rate and CFM of a given fan. We will introduce you to the mass flow rate equation and explain what CFM is and what the abbreviation CFM stands for (hint: Cubit Feet per Minute). We made sure that no fan feels excluded, whether it's the humble ..., Our Online, Easy-to-Use Calculator lets Users Calculate the Velocity or Flow Rate for a given Air Diffuser. Use in English or Metric Units ©2014-2024 by Adicot, Inc. Report a Problem with our HVAC Calculators Adicot, Inc.'s calculators are intended for professionals. are intended for professionals., How do you convert CFM? To convert Cubic Feet per Minute to other flow measurements, use the equations: Liters Per Minute = 28.3138 x CFM. Liters Per Second = .4719 x CFM. US Gallons Per Second = .1247 x CFM. US Gallons Per Minute (GPM) = 7.4805 x CFM. $100 Promotion. Win $100 towards teaching supplies! We want to see your websites and blogs ... , The volumetric flow rate of a liquid or gas in cubic feet per minute. 1 CFM equals approximately 0.47 liter per second. Metric conversions and more ConvertUnits.com provides an online conversion calculator for all types of measurement units., Adicot, Inc.'s Duct Size Calculator is a versatile and powerful tool designed to assist professionals in the HVAC (Heating, Ventilation, and Air Conditioning) industry. Whether you work with metric or English units, this calculator can handle both, providing convenience and flexibility for users worldwide. Modeled after the renowned original ..., CFM = (Room Volume in cubic ft) x ACH / 60. Calculate Room Volume: To find the volume of the room, multiply the room’s length (ft), width (ft), and height (ft). This will give you the volume in cubic feet. Determine Air Changes per Hour (ACH): This value varies based on the room type and its occupancy. Residential spaces usually need between ..., Cubic Feet per Minute: Input flow in CFM to convert to other flow measurements. How do you convert CFM? To convert Cubic Feet per Minute to other flow measurements, use …, The Compressor CFM (Cubic Feet per Minute) Calculator is a powerful tool designed to provide users with accurate airflow measurements for their compressors. By inputting the volume of the air tank (in cubic inches) and the number of revolutions per minute (RPM) of the compressor's pump, users can quickly determine the CFM, essential information for optimizing compressor performance., Grille Area (sq.in) = Airflow (cfm) ÷ [ Face Velocity (fpm) x Grille Free Area (%) ] x 144. Say we have an HVAC unit with 1050 CFM. Using an optimal face velocity of 500 fpm and assuming the grille has a free area of 70%, the required grille size is: Grille Area = 1050 ÷ (500 x 0.7) x 144. Grille Area = 432 sq.in., Measure the volume of your space (including L’ x W’ x H’) Multiply the space volume with the required air changes. Divide it by 60 minutes. Here’s an example: Suppose: space volume = 18x24x10, ACH = 10. Put the values in the cubic feet per minute equation: CFM = Space volume x ACH / 60 minutes. CFM = 18x24x10 x 10 / 60 = 720., The Digitized Ductulator is a free online calculator for sizing HVAC ducts. Use it in one of two ways; either enter the duct size to find the equivalent CFM, or input the CFM to find the right size of rectangular, round or flex duct. Click here to use the Ductulator. Use the right size duct. Duct that's too big, or too small can cause problems ..., The formula to calculate ACH is 60 multiplied by the cfm of your air exchange device, divided by the volume of air in the room. The ACH formula as an expression is: ACH=60Q/Vol. ACH = number of air changes per hour. Q = Volumetric flow rate of air in cubic feet per minute (cfm), Indoor Air Quality CFM Calculator. Our Air Quality CFM Calculator will show you the volume clean air you need. This information will help you choose the right air purifier for your needs. Hundreds of people use our CFM calculator each week to find answers to indoor air quality questions. We are happy to provide the consumer with this useful tool., The formula for calculating BTU loss or gain in converting CFM to BTU is temperature difference times actual CFM leakage times 1.08 equals BTU loss or gain. CFM is the actual cubic..., Determining CFM at Hoods. C F M = fpm x area. In this calculation, fpm is feet per minute of air velocity. Depending on the dust characteristics, the correct CFM value should be approximately 100–200 feet per minute of air velocity multiplied by the cross-sectional area of the hood in square feet. Accurate measurement of the volume of air ..., More information from the unit converter How many cfm in 1 cubic foot/minute? The answer is 1. We assume you are converting between cubic foot/minute and cubic foot/minute.You can view more details on each measurement unit: cfm or cubic foot/minute The SI derived unit for volume flow rate is the cubic meter/second. 1 cubic meter/second is equal to …, ... cfm, mbar, hPa, Torr, psi ... Unit converter. Convert flow rate and pressure (vacuum) in common units. Calculate flow rate. m³/h. l/min | lpm. l/s | l/sec. cfm., Converting Feet Per Minute (FPM) to Revolutions Per Minute (RPM) involves rearranging the RPM to FPM conversion formula. Here’s the formula: RPM =FPM / ( π ×Diameter) Where: RPM represents the speed of rotation in revolutions per minute. FPM denotes the linear speed in feet per minute. π (pi) is a mathematical constant, …, Here is the complete SCFM to CFM formula we derive further on: CFM = SCFM × (14.7 psi ÷ Pactual ) × (Tactual + 459.67) ÷ (68°F + 459.67) Example of SCFM to CFM calculator use: 500 SCFM at 60°F temperature and 16 psi pressure is equal to 452.41 CFM. You will find the calculator (with calculated chart) below the explanation of SCFM vs CFM ..., Volume flow is usually measured in Cubic Feet per Minute (CFM). Concept of Air Velocity can be used in air conditioning, heating and ventilating work. Enter value, select unit and …, The Toro PowerJet F700 Electric Leaf Blower has the highest CFM rating of any corded blower. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radi..., Feb 14, 2024 · Example. Suppose a duct with an area of 5 square feet and the air is moving at a velocity of 200 feet per minute (FPM), you can find the Cubic Feet per Minute (CFM) using this formula: CFM = (Area in square feet) x (FPM) Substituting the values: CFM = 5 sq ft x 200 FPM = 1000 CFM. So, the airflow rate in this duct is 1000 CFM.