Convert CFM to LPM for HVAC and air flow calculations.
Convert CFM to LPM using the official US customary standard conversion factor of 1 CFM = 2831.6846592 LPM.
Convert CFM to LPM for HVAC and air flow calculations.
Convert CFM to LPM using the official US customary standard conversion factor of 1 CFM = 2831.6846592 LPM.
High precision critical for HVAC design, fan selection, and air quality control. Always use precise values for engineering calculations.
Common mistake: Confusing CFM (cubic feet per minute) with CMH (cubic meters per hour). Also, using approximate 2800 LPM per CFM instead of the exact 2831.68 LPM, which causes significant errors in HVAC sizing.
| Item | CFM | LPM |
|---|---|---|
| Bathroom fan | 50 | 141584.23 |
| Bedroom AC | 400 | 1132673.86 |
| Kitchen hood | 600 | 1699010.79 |
| Office HVAC | 1000 | 2831684.66 |
| Industrial fan | 5000 | 14158423.30 |
CFM (Cubic Feet per Minute) measures air flow rate.
CFM determines how much air a system can move, affecting heating and cooling efficiency.
The official US customary standard defines 1 CFM as exactly 2831.6846592 LPM.
1 CMH (cubic meter per hour) equals approximately 0.5886 CFM.
Incorrect CFM sizing leads to inefficient HVAC systems, poor air quality, and increased energy costs.
100 CFM equals approximately 283,168.47 LPM.
Last Updated: 2026 · Reviewed by the UnitFig editorial team