EasySoap

EasySoap — Cold & Hot Process Soap Calculator

Whether you're pouring your first test batch or scaling up a 5-pound loaf, EasySoap does the math so you can focus on the craft.

Tell the app what oils you have, pick your mold, choose your process — EasySoap calculates exact lye (NaOH) and water amounts, checks your equipment fits the batch, and flags anything that could go wrong before you ever touch a scale.

Precise recipe calculations

Saponification values for 40+ oils — from grocery-store staples (coconut, olive, palm, lard) to specialty butters (shea, cocoa, mango, kokum)
Lye, water, and superfat calculated to the gram
Iodine Value and fatty-acid breakdown shown for every blend
Your whole kitchen, covered

Molds: loaf, slab, PVC pipe, cavity trays, muffin pans, and custom dimensions
Cookware: stockpots from 2qt to 12qt, crock pots, Instant Pot
Heat sources: gas, induction, electric, camp stove, campfire, JetBoil
Lye vessels: Pyrex, stainless pitcher, HDPE bucket — matched to batch size automatically
Every process, step by step

Cold Process (CP)
Hot Process — Crock Pot, Camp Stove, Instant Pot, Double Boiler, JetBoil
Oven Process (CPOP)
Microwave (fast test batches)
Additive library with usage guidance
Scents, exfoliants, colorants, botanicals, liquid replacements, hardeners, and specialty additives — each with typical usage ranges and warnings (overheating, accelerated trace, lye interactions, surface-only botanicals).

Plan Mode & Make Mode
Build your recipe in Plan Mode, review every ingredient at a glance, then switch to Make Mode for a distraction-free, step-by-step walkthrough — with safety reminders at every lye-handling step.

Built for accuracy
Calculations are based on peer-reviewed saponification values and USDA fatty-acid data, not community averages. No account required. No ads. Your recipes stay on your device.

Crafted by a soap maker, for soap makers.