Science & engineering

Molarity calculator

Calculate concentration from solute amount and final solution volume.

Molarity calculator
Esc to restore

Your inputs

Results update as you type. Larger files run when you press Update result.

Processed on your device

Your result

LOCAL & PRIVATE

Your result will appear here.

Your inputs stay in this browser. Nothing is uploaded or saved.

A clear answer. Here’s how.

Molarity = moles of solute ÷ final solution volume in litres. Converts entered millilitres to litres. The volume is the complete solution volume, not the volume of solvent before mixing.

See a worked example

Worked example

A fixed demonstration, separate from the values you enter above.

Amount of solute (mol)
0.25
Final solution volume (mL)
500

Example result

Molarity (mol/L)
0.5
Amount of solute (mol)
0.25

Keep going.

Stokes settling velocityIdeal rocket delta-vIdeal circular orbitCoplanar Hohmann transfer