Molarity Calculator

Calculate molarity, moles, or volume from the concentration formula C = n/V

C = n / V → 4 mol/L = 2 mol / 0.5 L
Concentration (C)
4mol/L
Moles (n)
2mol
Volume (V)
0.5L
Molarity diagram: beaker showing C = n / VA beaker visualization showing the relationship between concentration, moles, and volume.V = 0.5 Ln = 2 molC = 4 mol/LC = n / V4 mol/L = 2 mol / 0.5 L

About this calculator

Molarity Calculator solves C = n/V for concentration, moles, or volume. Enter any two of the three values to instantly find the third. Ideal for chemistry, lab work, and solution preparation — supports mol/L (Molarity M), moles, and liters.

Common examples

  • n = 2 mol, V = 0.5 L → C = 4 M
  • C = 1 M, V = 2 L → n = 2 mol
  • C = 0.5 M, n = 1 mol → V = 2 L
  • n = 0.1 mol, V = 0.25 L → C = 0.4 M
  • C = 2 M, V = 0.75 L → n = 1.5 mol