Sourdough Calculator

Use the Sourdough Calculator to weigh bread by baker's percentage. A pizza dough calculator with true hydration and a bulk timer.

🍞 Sourdough Calculator: every gram of your dough from baker's percentages Sourdough Calculator works out a whole dough from one number. Set the hydration, the starter and the salt, and the side panel shows the grams of water, levain and salt, the total dough weight and the true hydration with the starter counted in. 🚀 How to use the sourdough calculator 1. Click the toolbar button to open the side panel. 2. Pick a preset: sourdough loaf, pizza or focaccia. 3. Enter the flour weight, or the finished weight you want. 4. Read the grams, then copy or print the formula. 💡 Why bakers percentage works Every ingredient is written as a share of the flour, so one formula scales to any batch. Doing baker's math by hand at 6 a.m. next to a bubbling jar is where loaves go wrong. This sourdough calculator does the sums for you and rounds the grams sensibly. 🌾 What you can set ① Total flour and the blend: bread flour, whole wheat and rye in percent. ② Hydration as a percent of the flour. ③ Starter (levain) share and its own hydration, 100% by default. ④ Salt, plus optional instant yeast, oil and sugar. ⑤ Or size by dough: N pizzas of X grams, or one loaf of X grams. 💧 True hydration, not a guess A starter at 100% is half flour and half water, and most quick sums forget it. The sourdough hydration calculator inside adds the levain's share to the totals, so the number you see is the one your hands will feel. As a sourdough starter calculator, it also shows how much starter goes in and what it brings. 🍕 Pizza and focaccia too ➤ A pizza dough calculator with a New York style preset. ➤ A neapolitan pizza dough calculator for classic dough balls. ➤ A pizza calculator for dough: 6 pizzas of 250 g, every weight in one step. ➤ A focaccia preset with oil already in the formula. 📊 A dough hydration calculator that explains itself Each line shows the grams next to the percentage, so you learn the formula while you bake. Pizza dough hydration, a rye share or a stiff starter: change one value and the whole dough follows. It works as a bread hydration calculator for any loaf you have in mind. ⏱ Sourdough bulk fermentation timer Start the timer when you mix and follow your sourdough schedule. The sourdough bulk fermentation time is estimated from your dough temperature, and you can edit it. Stretch and fold reminders come at the interval you choose, for example every 30 minutes, four times. The minutes left show on the toolbar button. Each reminder comes as a Chrome notification or a note on the page you are reading. Prefer quiet? Pick just a sound and the badge. 📅 Your baking day at a glance The schedule shows the clock time of each set of folds and the end of the bulk ferment. A sourdough baking schedule like this keeps the day calm. Print the formula to keep next to the bowl. 📖 Read a recipe page On a bread or pizza recipe page with recipe data, click the button: it reads the amounts and shows them in baker's percentage. Load them into the Sourdough Calculator and scale the recipe to more pizzas or a bigger batch. It reads only that tab when you click, and asks before reading others. Unsure lines are listed for you to check. 🔹 Your doughs, your way 🔹 Save formulas in My doughs with their recipe page 🔹 Export and import a JSON file 🔹 Everything in Chrome's side panel: calculator, My doughs and settings 🔹 Light and dark theme, in 15 languages 🔒 Privacy Everything runs on your computer. No account, no analytics and no network requests: settings, saved doughs and the timer stay in Chrome storage on this device. ❓ What is baker's percentage? 💡 It is the bakers percentage system: each ingredient is a percent of the total flour weight, which counts as 100%. At 75% hydration, 1000 g of flour takes 750 g of water. ❓ Does the Sourdough Calculator count the water in my starter? 💡 Yes. The overall hydration includes the levain's flour and water, at the starter hydration you set. ❓ Does baker's percentage work for pizza? 💡 Yes. Choose the pizza preset, enter the number of dough balls and their weight, and use instant yeast instead of a starter if you like. ❓ How long should bulk fermentation take? 💡 The bulk fermentation time depends on how warm the mix is. The timer suggests a time for sourdough, which you can change, and reminds you of each stretch and fold. ❓ Is Sourdough Calculator free? 💡 Yes. Every feature works without an account or payment. ❓ Does it send my recipes anywhere? 💡 No. The sourdough calculator makes no network requests: your formulas stay on this computer. Bake your next loaf with the sourdough calculator. If it helps, a short review in the store helps other bakers find it.