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Molar Flow Rate Converter

Convert molar flow rate units including mol/s, kmol/h, lbmol/h for chemical engineering and reaction calculations.

What this tool does

Convert molar flow rate units including mol/s, kmol/h, lbmol/h for chemical engineering and reaction calculations. Type an amount in moles per second, choose the units, and the tool converts it to kilomoles per hour. It offers 9 molar flow rate units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one from 9 options, including Mole per second, Mole per minute, Mole per hour, Millimole per second, Millimole per minute, Kilomole per second. Starts as Mole per second.
  • To: Choose one of the same 9 units as "From". Starts as Kilomole per hour.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from moles per second to kilomoles per hour:

  • 1 mol/s = 3.6 kmol/h
  • 5 mol/s = 18 kmol/h
  • 10 mol/s = 36 kmol/h
  • 50 mol/s = 180 kmol/h
  • 100 mol/s = 360 kmol/h

Multiply the number of moles per second by 3.6 to get kilomoles per hour. Both units are exact definitions, so 3.6 is the exact factor: 1 mol/s = 3.6 kmol/h.

Sources: Mole per second: SI Brochure, 9th edition (2019). Kilomole per hour: exact by definition.

Limitations

  • Converts molar flow rate only. It does not convert to mass flow, which needs a molar mass.

FAQs

Q: How do I convert mol/s to kmol/h?
A: Enter the value, choose mol/s as the From unit and kmol/h as the To unit. The result and the other units in the list update immediately. To go the other way, swap the two units.
Q: What is a pound-mole?
A: A pound-mole is the amount of substance whose mass in pounds equals its molar mass in grams per mole. It is used in US chemical engineering and is about 453.6 moles.

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