Convert Cubic inches per second to UK gallons per minute
Convert Cubic inches per second (in³/s) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = in³/s × 0.216279009
About Cubic inches per second
The cubic inch per second (in³/s) equals 1.6387064×10⁻⁵ m³/s, used in US automotive engineering for engine displacement sweep rate, fuel-injector calibration, and hydraulic actuator speed specifications. An engine injector delivering 15 in³/s of fuel corresponds to roughly 15.5 mL/s; hydraulic jacks in US equipment are rated in in³/s at operating pressure. 1 in³/s ≈ 1.639×10⁻⁵ m³/s = 0.016387 L/s.
About UK gallons per minute
The UK (imperial) gallon per minute (gpm) equals 4.54609×10⁻³/60 ≈ 7.577×10⁻⁵ m³/s, historically used in British plumbing design, pump curves, and water-treatment plant sizing. Pre-metric UK water-industry capacity tables and pump manufacturers quoted flows in UK gal/min; legacy British Standard BS EN pump curves often show both units. 1 UK gpm ≈ 7.577×10⁻⁵ m³/s ≈ 4.546 L/min.
Quick Reference Table
| Cubic inches per second (in³/s) | UK gallons per minute (gpm) |
|---|---|
| 1 in³/s | 0.216279 gpm |
| 2 in³/s | 0.432558 gpm |
| 5 in³/s | 1.0814 gpm |
| 10 in³/s | 2.16279 gpm |
| 25 in³/s | 5.40698 gpm |
| 50 in³/s | 10.814 gpm |
| 100 in³/s | 21.6279 gpm |