Bread Proofing Time Calculator

Bread Proofing Guide

Temperature and Fermentation Rate

Yeast activity approximately doubles for every 10°C increase in temperature (up to about 40°C, where it begins to die). This means a dough that takes 4 hours at 20°C takes only 2 hours at 30°C and 8 hours at 10°C. Baker's rule of thumb: 17°C = double the time vs 27°C. Dough temperature is more important than room temperature — warm water adjustments can target a specific dough temperature (the baker's 'desired dough temperature' calculation considers room temp, flour temp, and water temp).

Bulk Fermentation vs Final Proof

Bulk fermentation (first rise): the most important stage — flavour development and gluten structure formation occur here. Typically 1–4 hours at room temperature. Final proof (after shaping): shorter, typically 45 minutes to 2 hours. Over-proofing is easier to avoid at this stage as the dough is in its final shape. The 'poke test' works well for final proof: poke a floured finger 1cm into the dough. Slowly springs back almost all the way: ready to bake. Immediately springs back fully: under-prov

Cold Retarding

Retarding dough in the fridge (4°C) slows fermentation dramatically — a 1% yeast dough can be retarded for 8–16 hours, giving flexibility for the baker's schedule and developing complex flavour through slow fermentation. The acid produced during slow cold fermentation contributes a mild tang. Dough can go directly from fridge to oven for some recipes (bagels, baguettes). For others, allow 30–60 minutes to come to room temperature and regain some activity before baking.

Common Proofing Mistakes

Under-proofing: dense, gummy crumb; very thick crust; poor oven spring; might tear at scores. Over-proofing: collapsed structure when scored; flat bread; sour or yeasty off-flavour; excessive holes in crumb. Inconsistent temperature: proof in a place with stable temperature — not near a window (cold night) or next to the oven (too warm). A turned-off oven with just the light on maintains approximately 26–28°C — ideal for many doughs.