Desired Dough Temperature Calculator

The formula multiplies the desired dough temperature by the number of variables that contribute heat to the dough, then subtracts each known temperature. The remainder is the water temperature that balances the equation.

• Without a preferment, four things determine dough temperature: water, room, flour and friction. The multiplier is 3 because we subtract three known values.
• With a preferment (poolish, biga, levain, sourdough starter), there's a fifth variable, so the multiplier becomes 4.
• Friction factor is the heat added by your mixer. King Arthur measures roughly 22-24°F (12-13°C) on a 7-quart KitchenAid after a 7-minute mix, and 8 minutes of hand mixing adds 6-8°F (3-4°C).
• The result is the water temperature you should use, whether straight from the tap, from the fridge, or mixed with ice to hit your target.

Yeast and bacterial activity roughly doubles for every 8°C (14°F) rise. A 2°C swing in dough temperature can add or subtract 30-60 minutes of bulk fermentation time. Controlling the final dough temperature is the single most reliable way to get repeatable bread, more so than timers or visual cues.

• In winter, water from the tap is often 8-12°C (46-54°F). In summer it can reach 22°C (72°F). Same recipe, completely different fermentation.
• Flour stored in a cold pantry or next to a warm oven drifts 5-8°C (9-14°F) from room temperature without you noticing.
• Planetary stand mixers add significant friction heat. A 10-minute mix can raise dough temperature by 5-8°C (9-14°F) all by itself.
• Professional bakeries always measure final dough temperature. It's the baseline metric that makes bread reproducible day after day.

Friction factor is the heat generated by mixing. It depends on the mixer, speed, mixing time, and dough size. These are good starting values, but for best accuracy measure your own friction factor once (see the FAQ below).

These are reference ranges from King Arthur Baking and The Perfect Loaf. Friction varies with mixer model, speed, mix time, and dough size. For the most accurate result, measure your own friction factor once. Mix a test dough with known water, room, and flour temperatures, then take the final dough temperature. Friction = (Final dough × 3) − Water − Room − Flour.

Different doughs ferment best at different temperatures. Sourdough likes it cooler for extended bulk fermentation, while enriched doughs need a little more warmth to get the yeast going through all that butter and sugar.

These are starting points. Bakers in cold kitchens often aim higher, while warm summer kitchens call for a few degrees cooler.

Let's say you want a dough temperature of 24°C (75°F). Your kitchen is 22°C (72°F), your flour is at 20°C (68°F), and you're using a KitchenAid stand mixer with a friction factor of 12°C (22°F). You're not using a preferment.

1. Multiplier: no preferment, so we use 3.
2. Step 1, DDT × 3: 24 × 3 = 72.
3. Step 2, subtract room: 72 − 22 = 50.
4. Step 3, subtract flour: 50 − 20 = 30.
5. Step 4, subtract friction: 30 − 12 = 18.
6. Water temperature: 18°C (64°F). Mix with water at that temperature and the dough will land at 24°C after mixing.

Sometimes the formula spits out a water temperature that's impossible or impractical. Here's how to adjust when that happens.