Mass Flow Converter
Convert mass flow rates between kg/s, kg/min, kg/h, g/s, t/h, lb/s, lb/min and lb/h.
Convert mass flow
Result
Mass Flow units
Every unit below converts to every other one in the calculator. Values are relative to the base unit, the kilogram per second (kg/s).
| Unit | Symbol | System | Value |
|---|---|---|---|
| Kilogram per second | kg/s | SI | Base unit |
| Kilogram per minute | kg/min | SI-accepted | ≈ 0.01666666667 kg/s |
| Kilogram per hour | kg/h | SI-accepted | ≈ 0.0002777777778 kg/s |
| Gram per second | g/s | SI | = 0.001 kg/s |
| Tonne per hour | t/h | SI-accepted | ≈ 0.2777777778 kg/s |
| Pound per second | lb/s | US customary | = 0.45359237 kg/s |
| Pound per minute | lb/min | US customary | ≈ 0.007559872833 kg/s |
| Pound per hour | lb/h | US customary | ≈ 0.0001259978806 kg/s |
Kilogram per second quick reference
| Kilogram per second | Kilogram per hour | Tonne per hour | Pound per second |
|---|---|---|---|
| 1 kg/s | = 3600 kg/h | = 3.6 t/h | ≈ 2.204622622 lb/s |
| 10 kg/s | = 36000 kg/h | = 36 t/h | ≈ 22.04622622 lb/s |
| 100 kg/s | = 360000 kg/h | = 360 t/h | ≈ 220.4622622 lb/s |
| 1000 kg/s | = 3600000 kg/h | = 3600 t/h | ≈ 2204.622622 lb/s |
Among the 8 mass flow units on this page, the smallest is the pound per hour (lb/h) and the largest is the kilogram per second (kg/s).
More mass flow conversions
About mass flow units
Mass flow rate is the mass of material that passes a point per unit of time. Its SI unit is the kilogram per second (kg/s). Unlike volume flow, it does not change with temperature or pressure, so it is preferred for steam, gases and fuels.
One lb/h is exactly 0.45359237 kg/h, and 1 kg/h is about 2.2046 lb/h. One tonne per hour is exactly 1000 kg/h, about 0.27778 kg/s. Converting to a volume flow needs the fluid density, so this page converts only between mass flow units.
Frequently asked questions
- How do I convert lb/h to kg/h?
- Multiply by 0.45359237 (exact). For example, 1000 lb/h of steam is about 453.6 kg/h.
- How do I convert mass flow to volume flow?
- Divide by the density. Water at about 1000 kg/m³ flowing at 1 kg/s is about 0.001 m³/s, or 1 L/s.
- How many kilograms per hour are in one kilogram per second?
- One kilogram per second = 3600 kg/h (kilograms per hour).
- How many tonnes per hour are in one kilogram per second?
- One kilogram per second = 3.6 t/h (tonnes per hour).
- How many pounds per second are in one kilogram per second?
- One kilogram per second ≈ 2.204622622 lb/s (pounds per second).