Pizza Dough Hydration, Explained

Hydration is the single number that changes how your dough feels in your hands, how it stretches, and how the finished crust eats. It is also the simplest idea in dough making: hydration is the weight of the water compared with the weight of the flour, written as a percentage. If a recipe uses 1,000 g of flour and 650 g of water, that's 65% hydration. That's the whole definition.

This is part of a system bakers call baker's percentages, where every ingredient is expressed relative to the flour, which is always 100%. Salt at 2.5% means 25 g of salt per 1,000 g of flour. The beauty of the system is that it scales perfectly: the ratios stay identical whether you're making one dough ball or twenty, which is exactly how the calculator works out your batch.

What different hydrations feel like

At 50–55%, dough is firm and almost putty-like. It holds its shape, resists tearing, and is very forgiving to knead and stretch — but the baked crust is denser and crisper, closer to a cracker at the low end. Many classic New York shop doughs live around 58–62%: still easy to handle, with some chew.

At 63–67% — the calculator's default of 65% sits here — dough becomes noticeably softer and slightly tacky. This range is the sweet spot for home ovens: open enough crumb to be light, structured enough that shaping isn't frustrating. Most people can work this dough comfortably after a batch or two of practice.

At 68–75% and beyond, dough gets sticky, slack, and harder to shape. The payoff is an airy, open, blistered crumb — the style you see in Neapolitan and artisan pizzas. But wetter is not automatically better. High-hydration dough demands confident handling, plenty of bench flour, and ideally a very hot oven or pizza steel; in a standard home oven, very wet dough can bake up pale and floppy rather than light.

Why water changes texture

Water does two jobs. First, it hydrates the flour's proteins so they can link into gluten — the stretchy network that traps gas bubbles. More water generally means a more extensible, relaxed network. Second, water turns to steam in the oven, and steam is what inflates the crumb; wetter doughs have more to give, which is why they bake up more open. Flour matters too: bread flour absorbs more water than all-purpose, so 65% with bread flour feels drier than 65% with all-purpose. If you switch flours, expect the same number to feel different.

How to choose your number

If you're new to making pizza at home, start at 60–62% and make the dough a few times; you'll learn what "right" feels like without fighting stickiness. Once shaping feels routine, move up in 2–3 point steps toward 65–68% and notice how the crumb opens up. Save 70%+ for when you have a steel or stone, a very hot oven, and hands that no longer panic when dough sticks. And change only one variable at a time — if you raise hydration and switch flour in the same batch, you won't know which change did what.

When you've picked your number, the calculator will translate it into exact gram amounts for any batch size — and because it holds the total dough weight constant, changing hydration shifts the flour-to-water balance without changing how much dough each pizza gets.