Crumb — Baker's Math

Baker's percentages, total hydration and water temperature, worked out as you type.

Crumb is a formula calculator for sourdough and home bakers. Enter a formula in grams or in percentages, and the other column updates as you go.

■ Features • Baker's percentages and grams, editable in either direction • Total hydration that counts the water in your levain and in wet add-ins such as egg, milk, butter and honey • Prefermented flour percentage, pinned at the top of the formula • Scale a batch by number of pieces and piece weight, or by total dough weight, with an optional loss percentage • A measuring sheet in grams, ounces or pounds • Water temperature for your desired dough temperature (DDT), with hand and mixer friction presets • Celsius or Fahrenheit

■ Free The whole calculator and 3 saved formulas. A banner ad appears on the formula list only. The formula editor and the water temperature screen have no ads.

■ Crumb Pro (one-time purchase) • Unlimited saved formulas, plus Duplicate • Share the measuring sheet as an image • No ads

Pro is a single purchase, not a subscription. You can restore it on other devices signed in with the same Apple Account.

■ Just the math Crumb calculates and nothing else: no timers, no reminders, no account. Your formulas stay on your device.

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