Volumetric Flow Rate Converter — m³/h, GPM, L/min & More
Convert between 12 units of volumetric flow rate — m³/s, m³/min, m³/h, L/s, L/min, L/h, mL/s, ft³/s, ft³/min, gal/s, gal/min, and gal/h. Used in plumbing, HVAC, hydraulics, water treatment, oil & gas and chemical engineering. The Amazon River has a flow rate of approximately 209,000 m³/s — 20% of all river discharge on Earth.
About the Flow Rate Converter
Flow rate measures the quantity of fluid (liquid or gas) passing a given point per unit time. Volumetric flow rate (m³/s, L/min, gal/min) is used when density is constant, as in plumbing and hydraulics. Mass flow rate (kg/s) is preferred in thermodynamics and chemical engineering where temperature changes affect fluid density significantly.
- ›The Amazon River discharges approximately 209,000 m³/s — 20% of all river discharge to oceans
- ›A typical household shower uses 8–12 litres per minute
- ›The human heart pumps about 5 litres of blood per minute at rest
- ›Industrial boiler feed pumps can move thousands of cubic metres per hour
m³/h to gal/min (US) — Conversion Table
| m³/h (m³/h) | gal/min (US) (gal/min) |
|---|---|
| 1 m³/h | 4.40288 gal/min |
| 2 m³/h | 8.80576 gal/min |
| 5 m³/h | 22.0144 gal/min |
| 10 m³/h | 44.0288 gal/min |
| 20 m³/h | 88.0576 gal/min |
| 50 m³/h | 220.144 gal/min |
| 100 m³/h | 440.288 gal/min |
| 1,000 m³/h | 4,402.881 gal/min |
Last updated: July 27, 2026 · Calculated using SI-validated constants (NIST)
Frequently Asked Questions
What units does the Volumetric Flow Rate Converter — m³/h, GPM, L/min & More support?
The Volumetric Flow Rate Converter — m³/h, GPM, L/min & More supports multiple units with instant conversion. Convert between 12 units of volumetric flow rate — m³/s, m³/min, m³/h, L/s, L/min, L/h, mL/s, ft³/s, ft³/min, gal/s, gal/min, and gal/h. Used in plumbing, HVAC, hydraulics, water treatment, oil & gas and chemical engineering. The Amazon River has a flow rate of approximately 209,000 m³/s — 20% of all river discharge on Earth. All results use SI-validated constants accurate to 8 significant figures.
Is this Volumetric Flow Rate Converter — m³/h, GPM, L/min & More free?
Yes — completely free. No registration, no limits. Works on all devices including mobile.
How accurate is this converter?
Accurate to 8 significant figures using precise mathematical constants validated against international SI standards (NIST and ISO 80000).