The gallon option means U.S. liquid gallons. The converter changes each rate to m³/s, then divides by the target factor.
| Unit | Exact dimensional factor to m³/s |
|---|---|
| m³/s | 1 |
| L/min | 0.001 ÷ 60 |
| US gal/min | 0.003785411784 ÷ 60 = 0.0000630901964 |
| ft³/min | 0.3048³ ÷ 60 = 0.0004719474432 |
For example, 25 US gal/min equals 94.6352946 L/min before rounding. There are no arbitrary mode-dependent engineering maxima; equivalent valid numeric values are treated consistently. Negative values, unknown units, invalid numeric inputs, and conversions that produce numbers too large to represent are rejected. This converts volume per time only, not pressure or mass flow.
Related: the PSI to GPM calculator relates pressure to flow, the speed converter handles length-per-time rates, and the gallons to liters calculator covers the gallon and liter units used here.
Keep the time denominator visible
Read both the volume unit and the time unit when choosing From and To. Two labels using liters can still describe different rates if one is per second and the other per minute. The result is a rate; calculating total delivered volume requires a duration and a decision about whether that rate stays constant.
Sources
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NIST, Guide for the Use of the International System of Units (SP 811) — SI units and accepted conversion guidance.
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NIST, Handbook 44, Appendix C — U.S. customary volume and length relationships used for dimensional arithmetic.
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NIST, SI Units: Volume — NIST SI volume reference backs the liter as exactly 0.001 cubic meter, the basis of the L/min factor.