CalcKit
Molar Flow Converter
The molar flow rate (ṅ) is the amount of a substance, in moles, that passes a point each second. Its SI unit is the mole per second (mol/s). Chemical engineers use it to balance reactions, since chemical equations count molecules, not mass.
It follows from the mass flow and the molar mass M: ṅ = ṁ / M. For example, 36 g/s of water (18 g/mol) is 2 mol/s. Mass flows are converted in the Mass Flow Converter.
How to convert molar flow units
Type a value into any field, and every other unit is calculated at once. For example, 2 mol/s:
-
In mol/min: multiply by 60.
2 * 60 = 120 mol/min -
In kmol/h: a kmol/min is 60 kmol/h, so multiply the kmol/min by 60.
0.12 kmol/min * 60 = 7.2 kmol/h
Common conversions
| Value | Equals |
|---|---|
| 1 mol/s | 60 mol/min |
| 1 mol/min | 0.0166667 mol/s |
| 1 kmol/min | 16.6667 mol/s |
| 1 mol/s | 0.06 kmol/min |
| 1 mmol/s | 60 mmol/min |
| 1 µmol/s | 60 µmol/min |
Molar flow units
-
Mole / second (mol/s): Mole per second is the base unit of molar flow, indicating one mole of substance flowing through a system in one second.
Conversion factor: 1 mol/s = 60 mol/min -
Mole / minute (mol/min): Mole per minute signifies one mole of substance flowing through a system in one minute.
Conversion factor: 1 mol/min = 0.01667 mol/s -
Kilomole / second (kmol/s): Kilomole per second denotes one thousand moles of substance flowing through a system in one second.
Conversion factor: 1 kmol/s = 1,000 mol/s -
Kilomole / minute (kmol/min): Kilomole per minute represents one thousand moles of substance flowing through a system in one minute.
Conversion factor: 1 kmol/min = 16.67 mol/s -
Megamole / second (Mmol/s): Megamole per second is a unit representing one million moles of substance flowing through a system in one second.
Conversion factor: 1 Mmol/s = 1,000,000 mol/s -
Megamole / minute (Mmol/min): Megamole per minute signifies one million moles of substance flowing through a system in one minute.
Conversion factor: 1 Mmol/min = 16,666.67 mol/s -
Millimole / second (mmol/s): Millimole per second represents one-thousandth of a mole flowing through a system in one second.
Conversion factor: 1 mmol/s = 0.001 mol/s -
Millimole / minute (mmol/min): Millimole per minute denotes one-thousandth of a mole flowing through a system in one minute.
Conversion factor: 1 mmol/min = 0.00001667 mol/s -
Micromole / second (µmol/s): Micromole per second is equal to one millionth of a mole flowing through a system in one second.
Conversion factor: 1 µmol/s = 0.000001 mol/s -
Micromole / minute (µmol/min): Micromole per minute signifies one millionth of a mole flowing through a system in one minute.
Conversion factor: 1 µmol/min = 0.00000001667 mol/s
Frequently asked questions
How do I convert a gas flow in standard liters to mol/s?
At standard conditions (0 °C and 1 atm), one mole of an ideal gas takes up 22.414 L. So 1 standard liter per minute is 1 / 22.414 / 60 = 0.000744 mol/s. Other references, such as 20 °C, use a different molar volume.