m³/h to CFM Converter
Convert Cubic Meters per Hour to Cubic Feet per Minute
m³/h
CFM
Result
Enter a value to convert
Quick Conversions
Conversion Formula
1 m³/h = 0.588578 CFM
To convert cubic meters per hour to cubic feet per minute, multiply the m³/h value by 0.588578
CFM = m³/h × 0.588578
Alternatively: m³/h = CFM × 1.699011
Conversion Table
| m³/h | CFM | m³/h | CFM |
|---|---|---|---|
| 1 | 0.589 | 60 | 35.315 |
| 5 | 2.943 | 70 | 41.200 |
| 10 | 5.886 | 80 | 47.086 |
| 15 | 8.829 | 90 | 52.972 |
| 20 | 11.772 | 100 | 58.858 |
| 25 | 14.714 | 200 | 117.716 |
| 30 | 17.657 | 500 | 294.289 |
| 40 | 23.543 | 1000 | 588.578 |
| 50 | 29.429 | 5000 | 2942.890 |
How to Convert m³/h to CFM
- Identify the value in cubic meters per hour (m³/h) that you want to convert
- Multiply the m³/h value by the conversion factor 0.588578
- The result will be the equivalent value in cubic feet per minute (CFM)
- Round the result to the desired number of decimal places for your application
Conversion Examples
Example 1: Converting 100 m³/h to CFM
Calculation: 100 m³/h × 0.588578 = 58.858 CFM
A ventilation system rated at 100 cubic meters per hour moves approximately 58.86 cubic feet of air per minute.
Example 2: Converting 500 m³/h to CFM
Calculation: 500 m³/h × 0.588578 = 294.289 CFM
An industrial fan with a capacity of 500 m³/h provides an airflow of 294.29 CFM.
Example 3: Converting 1500 m³/h to CFM
Calculation: 1500 m³/h × 0.588578 = 882.867 CFM
A large HVAC system operating at 1500 cubic meters per hour delivers 882.87 cubic feet per minute of airflow.
Common m³/h to CFM Conversions
| Application | m³/h | CFM |
|---|---|---|
| Small Bathroom Exhaust Fan | 50 | 29.43 |
| Kitchen Range Hood | 400 | 235.43 |
| Residential HVAC System | 1200 | 706.29 |
| Computer Server Room | 800 | 470.86 |
| Industrial Ventilation | 3000 | 1765.73 |
| Commercial Air Handler | 5000 | 2942.89 |
| Large Workshop Extractor | 2000 | 1177.16 |
| Portable Air Cleaner | 150 | 88.29 |
Related Volume Flow Rate Conversions
Frequently Asked Questions
What is the difference between m³/h and CFM?
m³/h (cubic meters per hour) and CFM (cubic feet per minute) are both units of volumetric flow rate, measuring how much volume passes through a point per unit of time. The main difference is that m³/h uses metric units and measures flow per hour, while CFM uses imperial units and measures flow per minute. m³/h is commonly used in Europe and Asia, while CFM is prevalent in North America for HVAC and ventilation applications.
How do you convert m³/h to CFM?
To convert m³/h to CFM, multiply the m³/h value by 0.588578. For example, 100 m³/h equals 100 × 0.588578 = 58.858 CFM. This conversion factor accounts for both the unit change from cubic meters to cubic feet and the time change from hours to minutes.
Why is CFM important in HVAC systems?
CFM is critical in HVAC systems because it determines the amount of air circulation in a space. Proper CFM ratings ensure adequate ventilation, temperature control, and air quality. Too low CFM results in poor air circulation and discomfort, while excessively high CFM can lead to energy waste and noise issues. Matching CFM to room size and usage is essential for efficient climate control.
What is a good CFM for a room?
The recommended CFM for a room depends on its size and purpose. A general guideline is to achieve 6-8 air changes per hour (ACH) for residential spaces. Calculate this by multiplying room volume (length × width × height in feet) by ACH, then dividing by 60. For example, a 12×15 ft room with 8 ft ceilings needs approximately (12×15×8×6)/60 = 144 CFM minimum. Kitchens and bathrooms typically require higher CFM ratings.
Is higher CFM always better?
No, higher CFM is not always better. While adequate airflow is necessary, excessively high CFM can create problems including increased noise levels, higher energy consumption, air turbulence, and difficulty maintaining consistent temperatures. The optimal CFM should match your specific application requirements, room size, and intended use. Oversized systems also tend to short-cycle, reducing efficiency and equipment lifespan.
Can I convert CFM back to m³/h?
Yes, to convert CFM to m³/h, multiply the CFM value by 1.699011. For instance, 100 CFM equals 100 × 1.699011 = 169.90 m³/h. This reverse conversion is useful when working with international equipment specifications or comparing products from different regions that use different measurement standards.
What factors affect actual CFM in ventilation systems?
Several factors can affect actual CFM output including duct length and diameter, number of bends and turns in ductwork, air filter condition, static pressure, fan speed settings, altitude, temperature, and humidity. These factors create resistance that reduces effective airflow compared to the rated CFM. Regular maintenance, proper duct design, and appropriate equipment sizing help maintain optimal CFM performance.
How accurate is the m³/h to CFM conversion?
The conversion from m³/h to CFM using the factor 0.588578 is mathematically precise for standard conditions. However, in real-world applications, factors like temperature, pressure, and humidity can affect actual gas volume. For most HVAC and ventilation calculations at standard conditions (room temperature and atmospheric pressure), this conversion provides sufficient accuracy for engineering and practical purposes.