Convert Gallons per Minute to Cubic Centimeters per Minute

Formula

cm³/min = GPM × 3785.411784

Derivation from SI units:

• 1 GPM = 231 in³ ÷ 60 s = 0.003785411784 m³ ÷ 60 s = 6.30901964 × 10⁻⁵ m³/s
• 1 cm³/min = 10⁻⁶ m³ ÷ 60 s
• 1 GPM = 0.0000630901964 m³/s ÷ 1.666666666667 × 10⁻⁸ m³/s per cm³/min = 3785.411784 cm³/min

Both units are defined exactly, so the factor is exact. Gallon per Minute definition: US gallon per minute; Cubic Centimeter per Minute definition: cubic centimeter per minute.

Worked examples

1. A reading of 3 GPM converts to 11356.23535 cm³/min.
   3 GPM × 3785.411784 = 11356.23535 cm³/min
2. A value of 25 GPM is 94635.2946 cm³/min.
   25 GPM × 3785.411784 = 94635.2946 cm³/min

Where it's used

Gallons per Minute are used for pump, well and irrigation ratings, while cubic centimeters per minute appear in chromatography carrier-gas and HPLC flows. Both measure volumetric flow rate (volume per unit time), so the conversion is a fixed factor.

Gallon per Minute to other flow rate units

Frequently asked questions

Sources

• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "gallon [U.S.] per minute (gpm)".
• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 2 and Table 8 (minute).

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.