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.