To convert gallons per minute to cubic meters per second, multiply by 0.0000630901964.
The calculation uses 1 GPM = 0.0000630901964 m³/s. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
The formula
value in m³/s = value in GPM × 0.0000630901964
GPM- Input unit: gallons per minute
m³/s- Output unit: cubic meters per second
How to use this calculator
- Enter a value in GPM.
- Multiply by the stored conversion factor.
- Read the result in m³/s; divide by the same factor to convert back.
Worked examples
Worked conversion
1 GPM × 0.0000630901964 ≈ 0.0000630901964 m³/s.
Reverse conversion
0.0000630901964 m³/s ÷ 0.0000630901964 ≈ 1 GPM. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 0.0000630901964 m³/s per GPM.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
GPM to m³/s table
| GPM | m³/s (rounded) |
|---|---|
| 0 | 0 |
| 1 | 0.0000630901964 |
| 2 | 0.0001261803928 |
| 5 | 0.000315450982 |
| 10 | 0.000630901964 |
| 100 | 0.00630901964 |
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