Mold Volume Calculator

Estimate total oils from loaf, tube, or water-fill molds, then send the result straight back to the soap calculator.

Shape

Rectangular

Switch between loaf, tube, or custom fill.

Fill Level

90%

Leave headroom for mixing and additives.

Output

Awaiting inputs

Ready to apply back to the recipe.

Calculate Required Oil Weight

Determine exactly how much oil you need to fill your mold.

Quick Presets

Weight Unit

Dimension Unit

Mold Shape

Length (cm)

Width (cm)

Height / Depth (cm)

Number of Molds

Fill Level90%

Use 85–95% to leave headroom for additives and mixing.

Oil Weight Factor

Using soapcalculator.org style formula: cm³ × factor = oils (g). Typical factor: 0.70.

0 g

Fill Level:90%

Oil Factor:0.70

Next Steps

Move to the next tool in the workflow or jump back to the calculator when you are ready to finalize the batch.

Build the full recipe, check lye and water totals, then save or share the batch.

Set fragrance or essential oil rates from total oil weight and push them back to the recipe.

Track cut and cure dates, then export a reminder so batches are ready on time.

Browse SAP values, qualities, and usage guidance before finalizing your oil blend.