Flow Measurement · Free Calculator
Mass Flow to Volume Flow Calculator
Convert mass flow to volumetric flow, or the reverse, using the fluid density at flowing conditions.
kg/h to m³/hm³/h to kg/hDensityCoriolis to volume
Volume flow5.8824 m³/h
Volume flow98.039 L/min
Volume flow25.899 US gpm
How this result was calculated
- Q = ṁ ÷ ρ = 5,000 kg/h ÷ 850 = 5.8824 m³/h
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Mass and Volume Flow
Q = ṁ ÷ ρ ṁ = Q × ρ
Worked example
5000 kg/h of oil at 850 kg/m³ is 5000 ÷ 850 = 5.88 m³/h (98 L/min).
Key insight: liquid density changes with temperature (about 0.07 % per °C for oils), so a fixed density in the DCS gives a volume error when the process temperature moves. Coriolis meters measure density live.
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Frequently Asked Questions
How do I convert kg/h to m³/h?
Divide by the density in kg/m³. For water at 20 °C (998 kg/m³), 1000 kg/h is 1.002 m³/h.
Which density should I use?
The density at flowing pressure and temperature, not at reference conditions, unless you want reference volume.
Can I use this for gas?
Yes, with gas density at line conditions. Use the gas density calculator to find it.
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