Molarity / Concentration Converter
Convert between molar (mol/L), millimolar, micromolar, nanomolar, moles per cubic meter and other units of molar concentration.
1 mole per cubic meter = 1 millimolar
Most used molarity units
- Mole per liter mol/L 1 mol/L = 1,000 mol/m³
- Millimolar mM 1 mM = 1 mol/m³
- Micromolar µM 1 µM = 0.001 mol/m³
- Mole per cubic meter mol/m³ Base unit
- Nanomolar nM 1 nM = 0.000001 mol/m³
- Picomolar pM 1 pM = 1 × 10-9 mol/m³
- Kilomole per cubic meter kmol/m³ 1 kmol/m³ = 1,000 mol/m³
- Femtomolar fM 1 fM = 1 × 10-12 mol/m³
- Pound-mole per cubic foot lb-mol/ft³ 1 lb-mol/ft³ = 16,018.463 mol/m³
- Mole per milliliter mol/mL 1 mol/mL = 1,000,000 mol/m³
- Attomolar aM 1 aM = 1 × 10-15 mol/m³
Popular molarity conversions
- Moles per liter to millimolar 1 mol/L = 1,000 mM
- Millimolar to micromolar 1 mM = 1,000 µM
- Micromolar to nanomolar 1 µM = 1,000 nM
- Nanomolar to micromolar 1 nM = 0.001 µM
- Moles per liter to moles per cubic meter 1 mol/L = 1,000 mol/m³
- Moles per cubic meter to moles per liter 1 mol/m³ = 0.001 mol/L
What is molarity?
Molar concentration, or molarity, is the amount of a dissolved substance per unit volume of solution. Chemists write it as M, meaning moles per liter: a 1 M solution of table salt contains one mole (58.44 g) of NaCl per liter. The SI unit is the mole per cubic meter, which equals one millimole per liter.
Biology and medicine use smaller units: blood glucose is about 5 mmol/L, hormones are measured in nanomoles or picomoles per liter, and drug potencies in micromolar or nanomolar.
Mass-based concentrations such as parts per million need the molar mass of the substance to convert to molarity. For ppm and ppb as ratios, see the ratio and fraction converter.
Molarity units from smallest to largest
Every proportional molarity unit on the site, ordered by size and expressed in moles per cubic meter.
- Attomolar 1 × 10-15 mol/m³
- Femtomolar 1 × 10-12 mol/m³
- Picomolar 1 × 10-9 mol/m³
- Nanomolar 0.000001 mol/m³
- Micromolar 0.001 mol/m³
- Millimolar 1 mol/m³
- Mole per cubic meter 1 mol/m³
- Mole per liter 1,000 mol/m³
- Kilomole per cubic meter 1,000 mol/m³
- Pound-mole per cubic foot 16,018.5 mol/m³
- Mole per milliliter 1,000,000 mol/m³
All 11 molarity units
Molar
SI & engineering
Frequently asked questions
What does 1 M mean?
One mole of solute per liter of solution.
How many µM are in a mM?
1 mM = 1,000 µM = 1,000,000 nM.