Meter Cube Per Hour (CMH) To CFM Conversion (m3/hr To CFM)

Airflow is either measured in meter cube per hour (m3/h) or CFM. CFM or cubic feet per minute is usually the more useful metric. However, specification sheets of some devices like air purifiers may include m3/h but not CFM. That’s why it’s useful to convert m3/h to CFM.

To help you out, we have created an m3/h to CFM calculator (just insert m3/h, get CFM automatically). Below the calculator, you will also find a conversion chart with 1 m3/h to 3000 m3/h converted into CFM

Here are the units that we are converting:

• m3/h or CMH (Cubic Meters Per Hour) is the SI unit of air flow. 1 m3/h is equal to 1 cubic meter of air being moved in 1 hour.
• CFM stands for Cubic Foot Per Minute. This is also a unit of air flow; 1 CFM is equal to 1 cubic foot of air being moved in 1 hour.

How do you convert m3/hr to CFM?

As you can see, we have to make two conversions:

• Covert m3 into ft3 (cubic meter to cubic feet). 1 m3 is equal to 35.3147 ft3.
• Convert hours to minutes. 1 hour is equal to 60 minutes.

With a bit of math, we can derive this formula to convert m3/h to CFM:

CFM = m3/h / 1.699

Example: An air purifier can produce an air flow of 200 m3/h. We just insert this 200 m3 into the equation like this:

CFM (200 m3/h) = 200 m3/h / 1.699 = 117.72 CFM

We can also use this basic conversion:

1 m3/h is equal to 0.589 CFM.

To help you out, we have prepared a meter cube per hour to CFM calculator:

m3/h To CFM Calculator

Just input the m3/hr and you’ll get the converted CFM value. Below the calculator, we have also calculated a conversion chart for the most common airflow rates.

Here is how this calculator works:

Let’s say we want to convert 100 m3/h to CFM. Just slide the slider to ‘100’ and you get the result: 100 m3/h is equal to 58.86 CFM.

Note: m3/hr can also be abbreviated as CHM. That means that CHM to CFM conversion is the same as meter cube per hour to CFM, ie: 1 CHM is equal to 0.589 CFM.

Here is the full m3/h to CFM conversion chart:

Meter Cube Per Hour To CFM Conversion Chart

m3/h (Cubic Meters per Hour or CMH):	CFM (Cubic Feet Per Minute):
1 m3/h	0.589 CFM
5 m3/h	2.95 CFM
10 m3/h	5.89 CFM
20 m3/h	11.77 CFM
30 m3/h	17.67 CFM
40 m3/h	23.56 CFM
50 m3/h	29.45 CFM
60 m3/h	35.34 CFM
70 m3/h	41.23 CFM
80 m3/h	47.12 CFM
90 m3/h	53.01 CFM
100 m3/h	58.90 CFM
150 m3/h	88.35 CFM
200 m3/h	117.80 CFM
250 m3/h	147.25 CFM
300 m3/h	176.70 CFM
350 m3/h	206.15 CFM
400 m3/h	235.60 CFM
450 m3/h	265.05 CFM
500 m3/h	294.50 CFM
600 m3/h	353.40 CFM
700 m3/h	412.30 CFM
800 m3/h	471.20 CFM
900 m3/h	530.10 CFM
1000 m3/h	589.00 CFM
1500 m3/h	883.50 CFM
2000 m3/h	1178.00 CFM
3000 m3/h	1767.00 CFM

Now you can just check this chart for this conversion. Example: How many CFM is 450 m3/h? As you can see from the chart, 450 m3/h is equal to 265.05 CFM.

With the calculator and this chart, you are fully equipped to adequately and precisely convert m3/h to CFM. If you need specific conversion from m3/hr to CFM, you can give us the numbers in the comments below and we’ll try to help you out.

Related posts:

1. Specific Heat Capacity Calculator + Formula (Equation C = Q /(m ⨉ ΔT))
2. SCFM Vs CFM Explained: SCFM To CFM Calculator + Chart
3. Amp Hour Calculator: How To Calculate Amp Hours Of A Battery?
4. Convert hPa To PSI: Hectopascal To PSI Calculator + Chart
5. Understanding SEER2: Old SEER vs SEER2 (+ Conversion)