Pocket Batch

Pocket Batch is a beautifully simple soap formulation calculator designed for soap makers who want powerful calculations without a complicated interface.

BUILD YOUR RECIPE Create recipes using percentages or exact oil weights. Edit either value directly and Pocket Batch automatically keeps your formulation in sync.

CALCULATE YOUR LYE & WATER Formulate with NaOH, KOH, or dual lye. Choose Water as % of Oils, Lye Concentration, or Water:Lye Ratio and see your recipe update instantly.

EXPLORE 149 OILS, BUTTERS, FATS & WAXES Search a comprehensive ingredient library with SAP information and formulation data.

UNDERSTAND YOUR SOAP Review Hardness, Cleansing, Conditioning, Bubbly, Creamy, Iodine and INS values when complete formulation data is available, along with fatty-acid information.

SAVE & SCALE RECIPES Keep your favorite formulations on your device and quickly scale batches while maintaining your recipe percentages.

MADE FOR SOAP MAKERS • NaOH, KOH and dual-lye calculations • KOH purity adjustment • Superfat / lye discount • Grams, ounces and pounds • Direct percentage and weight editing • Three water calculation methods • Fragrance calculator • Searchable ingredient library • Saved recipes • Recipe scaling • Formulation qualities and fatty-acid information where available • No account required • No ads • No subscription • Designed to work offline

Simple enough for your first batch. Powerful enough for your thousandth.

Pocket Batch — Soap formulation, simplified.

IMPORTANT: Saponification values are averages and natural materials vary. Pocket Batch is a formulation tool and is not a substitute for proper soap-making knowledge or safety procedures. Always follow appropriate precautions when handling sodium hydroxide, potassium hydroxide, and other soap-making materials.

Discovery signals