Convert mass flow rate between kg/s, kg/h, lb/s, lb/h and tonnes per hour.
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Mass Flow Rate Converter
Fluids • 8 units
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Enter a value to convert
Result
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Conversion Factor
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In kg/s
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Visual Comparison
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How to Use the Mass Flow Rate Converter
Enter a value — type any number. Invalid text and symbols are blocked automatically.
Select From and To units — choose the units to convert between.
Read the animated result — the converted value, factor, and full reference table update instantly.
Use Swap (⇄) — reverse the conversion in one click.
Why Use This Mass Flow Rate Converter
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Accurate Standards
Built on internationally recognised SI and standards-body conversion factors for dependable results.
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Instant & Animated
Results update live as you type, with a clear visual breakdown across every unit at once.
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100% Private
Everything runs in your browser — no account, no uploads, nothing leaves your device.
Common Mass Flow Rate Converter Values
Quick reference — 1 Kilogram/second (kg/s) is equal to:
Gram/second
g/s
1,000
Kilogram/hour
kg/h
3,599.997120
Kilogram/minute
kg/min
59.999880
Pound/second
lb/s
2.204623
Pound/hour
lb/h
7,936.633910
Tonne/hour
t/h
3.599997
US ton/hour
ton/h
3.968317
Mass Flow Rate Converter FAQ
It is the mass of fluid passing a point per unit time, in kilograms per second (kg/s). It differs from volumetric flow rate, which measures volume per time and depends on density.