Sourdough calculator for Android

Bake by the numbers.

Pick hydration, starter and salt. Get grams for every loaf, counting the flour and water already in your starter. Then let the timer walk you through the bake.

Free
Works offline
Step reminders

Dough formula for two 900 g loaves at 75% hydration

Hydration · starter · salt75 · 20 · 2

Baker’s percentages

Everything is a share of the flour.

Flour is always 100%. Water, starter and salt are percentages of it, so a formula scales to any batch. Here are 75% hydration, 20% starter and 2% salt for two 900 g loaves.

Ingredient	Baker’s %	You weigh
Flour	100%	915 g
Water	75%	661 g
Starter (100% hydration)	20%	203 g
Salt	2%	20 g
Dough		1800 g

The starter already holds 102 g of flour and 102 g of water, so you add less of each. That is true hydration, and many quick calculators get it wrong.

Four tools

From starter to cooling rack.

Dough formula

By dough weight or by flour. Blend up to four flours, add seeds or cheese, and save the formulas you like.

flour = dough ÷ (1 + hydration + salt)

Starter feed

How much ripe starter, flour and water to mix tonight, plus a rough peak time for your kitchen temperature.

1 : 2 : 2 → 24 g + 48 g + 48 g

Water temperature

Hit your desired dough temperature, mixing by hand or with a mixer, in °C or °F.

water = 4 × DDT − (room + flour + starter + friction)

Bake timer

Autolyse, folds, bulk, shaping, room or fridge proof and bake, with a reminder for every step. Or plan backwards from when you want the bread.

ready at 9:00 → start at 14:10 the day before

Inside the app

Made for floury hands.

Home screen with the current formula and tools — Home

Starter feed at 1:2:2 with a jar showing the mix — Starter feed

Bake timer in dark mode during stretch and folds — Bake timer

Details

The small print.

Units	Grams, and °C or °F picked from your region. Switch any time in Settings.
Reminders	The bake timer uses Android notifications. They may arrive a few minutes late while your phone saves battery.
Saved formulas	Formulas stay on your phone. Share any formula as plain text. No account, no cloud.
Languages	English, Українська, Español, Português, Deutsch, Français, Italiano, Nederlands, Polski, Čeština, Română, Български, Eesti, Русский, Türkçe, Bahasa Indonesia, Tiếng Việt, ไทย, हिन्दी, العربية, 日本語, 한국어.
Price	Free with ads. An optional monthly subscription removes all ads.