Mold Volume Calculator

Before you pour, you need to know how much soap your mold will hold. A mold that's too small means an overflow. A mold that's too large means wasted effort. Enter your mold dimensions and get the estimated batch weight instantly.

Calculate Mold Volume

Mold inputs

Use inside dimensions. The mass result is an estimate, not a formulation or safety claim.

ShapeDimension unit

Length (cm)Width (cm)Height (cm)

Fill percentageLeave headspace by using less than 100%.Fresh-batter density (g/cm³)0.90 is a planning assumption. Calibrate against your own filled mold for precision.

Capacity result

Volume first, then your stated fill and density assumptions.

Mold volume: Calculated from inside dimensions
Target fill volume: Your headspace assumption applied
Estimated fresh batter: Your density assumption applied