CFM to GPM (CFM to GPM)
Result
7.480519481 GPM
Formula
GPM = CFM × 7.480519481
1 CFM = 7.480519481 GPM, and 1 GPM = 0.1336805556 CFM.
Standard gravity is defined as exactly 9.80665 m/s². Density and flow factors follow from the length, mass and volume definitions (for example 1 US gallon per minute = 3.785411784 L/min).
Worked examples
- 1 CFM × 7.480519481 = 7.4805195 GPM
- 10 CFM × 7.480519481 = 74.805195 GPM
- 100 CFM × 7.480519481 = 748.05195 GPM
Common mistakes
- Actual gravity varies from about 9.78 m/s² at the equator to 9.83 m/s² at the poles; "g" here is the defined standard value.
- GPM here means US gallons per minute; UK pump literature may use imperial gallons (4.546 L).
CFM to GPM table
| CFM (CFM) | GPM (GPM) |
|---|---|
| 1 | 7.4805195 |
| 2 | 14.961039 |
| 5 | 37.402597 |
| 10 | 74.805195 |
| 20 | 149.61039 |
| 50 | 374.02597 |
| 100 | 748.05195 |
| 1,000 | 7,480.5195 |
The units
- CFM (CFM)
- 1 CFM = 28.31684659 L/min.
- GPM (GPM)
- 1 GPM = 3.785411784 L/min.
Sources for these factors
- The International System of Units (SI Brochure), 9th edition — BIPM
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy