Cubic Feet per Minute to US Gallons per Minute Converter
1 cubic foot per minute ≈ 7.48051948 US gallons per minute
1 cubic foot per minute equals 7.48052 US gallons per minute
How to convert cubic feet per minute to US gallons per minute
These are volumetric flow rates. US and Imperial gallons per minute differ; gas volumes quoted at standard conditions also need their reference temperature and pressure before comparison with actual flow.
gpm = CFM × 7.480519481One cubic foot per minute is 7.480519481 US gallons per minute, so a single multiplication converts any value.
74.8052 gpm ≈ 10 × 7.480519481Cubic feet per minute to US gallons per minute conversion table
Common values in cubic feet per minute, converted to US gallons per minute.
| Cubic feet per minute (CFM) | US gallons per minute (gpm) |
|---|---|
| 1 | 7.4805195 |
| 2 | 14.961039 |
| 3 | 22.441558 |
| 4 | 29.922078 |
| 5 | 37.402597 |
| 10 | 74.805195 |
| 20 | 149.61039 |
| 25 | 187.01299 |
| 50 | 374.02597 |
| 100 | 748.05195 |
| 250 | 1,870.1299 |
| 500 | 3,740.2597 |
| 1,000 | 7,480.5195 |
About these units
cubic foot per minuteCFM
The US standard for fan, compressor and ventilation airflow.
US gallon per minutegpm
The US standard for pump and plumbing flow.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.