Convert Cubic inches per hour to Cubic metres per hour
Convert Cubic inches per hour (in³/h) to Cubic metres per hour (m³/h) instantly and accurately.
Conversion Formula
m³/h = in³/h × 1.638706400e-5
About Cubic inches per hour
The cubic inch per hour (in³/h) equals 1.6387064×10⁻⁵/3600 ≈ 4.552×10⁻⁹ m³/s, appearing in US oilfield plunger-pump capacity datasheets and slow hydraulic-actuator specifications. It is also used in US ASTM leak-test standards where maximum allowable leakage past a valve seal is expressed in in³/h at rated pressure. 1 in³/h ≈ 4.552×10⁻⁹ m³/s.
About Cubic metres per hour
The cubic metre per hour (m³/h) equals 1/3600 m³/s ≈ 2.778×10⁻⁴ m³/s, the dominant volumetric flow unit in European process engineering, HVAC, and water treatment. Pump datasheet curves, heat-exchanger sizing software, and wastewater-treatment design all use m³/h as the standard. A domestic water pump runs at 3-8 m³/h; a municipal WWTP inlet pump handles 500-5 000 m³/h. 1 m³/h ≈ 2.778×10⁻⁴ m³/s = 1 000 L/h.
Quick Reference Table
| Cubic inches per hour (in³/h) | Cubic metres per hour (m³/h) |
|---|---|
| 1 in³/h | 1.639 × 10-5 m³/h |
| 2 in³/h | 3.277 × 10-5 m³/h |
| 5 in³/h | 8.194 × 10-5 m³/h |
| 10 in³/h | 0.000163871 m³/h |
| 25 in³/h | 0.000409677 m³/h |
| 50 in³/h | 0.000819353 m³/h |
| 100 in³/h | 0.00163871 m³/h |