MihsabaHow to use
This calculator relates mass passing per unit time to volume passing per unit time using Q = ṁ/ρ. Enter mass flow in kg/s and density in kg/m³ to see three volumetric units. For example, 2 kg/s at an entered density of 1,000 kg/m³ gives 0.002 m³/s, 120 L/min and 7.2 m³/h. Use density for the material and operating temperature and pressure; it is not one universal constant.
- Convert kg/min to kg/s by dividing by 60 if needed.
- Enter nonnegative mass flow and positive density in the labeled units.
- Calculate and compare m³/s, L/min and m³/h results.
How it is calculated
Example
For mass flow 2 kg/s and density 1,000 kg/m³: Q = 2 ÷ 1000 = 0.002 m³/s; multiplying by 60,000 gives 120 L/min and by 3,600 gives 7.2 m³/h.
Important notes
The tool does not infer fluid identity or density from flow rate. For gases, use density at the actual conditions of the volume you want; standard volumes need defined reference conditions and a matching density. Defaults are an example, not an automatic water or air density selection.
Worked examples and interpreting results
For mass flow 2 kg/s and density 1,000 kg/m³: Q = 2 ÷ 1000 = 0.002 m³/s; multiplying by 60,000 gives 120 L/min and by 3,600 gives 7.2 m³/h.
| Case | Calculation | Result |
|---|---|---|
| Flow in cubic metres per second | 2 ÷ 1000 | 0.002 m³/s |
| Flow in litres per minute | 0.002 × 60000 | 120 L/min |
| Flow in cubic metres per hour | 0.002 × 3600 | 7.2 m³/h |
How to check the result
The tool does not infer fluid identity or density from flow rate. For gases, use density at the actual conditions of the volume you want; standard volumes need defined reference conditions and a matching density. Defaults are an example, not an automatic water or air density selection.
Frequently asked questions
Can I convert kg/s to L/min without density?
No. The units measure mass and volume, so density is required. Use L/min = kg/s ÷ (kg/m³) × 60000.
How do I enter a mass flow measured in kg/min?
Divide kg/min by 60 to obtain kg/s first. For example, 120 kg/min equals 2 kg/s.
How does density change volumetric flow?
At fixed mass flow, doubling density halves volumetric flow. A flow of 2 kg/s at 500 kg/m³ gives 240 L/min; at 1,000 kg/m³ it gives 120 L/min.
Is zero mass flow allowed?
Yes. Zero mass flow with positive density gives zero volumetric flow. Zero or negative density is invalid for this conversion.