What Is Pizza Dough Hydration?
Pizza dough hydration is the ratio of water to flour in your dough, expressed as a percentage. A dough made with 1000g of flour and 650g of water is 65% hydration.
It’s one of the most important variables in pizza making, hydration affects how the dough handles, how it bakes, and what the final crust feels and tastes like.
The formula is simple:
Hydration % = (Water weight ÷ Flour weight) × 100
So if you use 600g of water with 1000g of flour: (600 ÷ 1000) × 100 = 60% hydration
Why Hydration Percentage Matters
Small changes in hydration have a big effect on your dough:
- Lower hydration (58–63%): stiffer dough, easier to shape, crisper crust. Typical for traditional Neapolitan and thin-crust styles.
- Medium hydration (64–70%): soft, extensible dough with a good balance of chew and crispness. Typical for New York style.
- Higher hydration (70–80%): slack, sticky dough that’s harder to work with but produces an open, airy crumb and chewy crust. Typical for Sicilian and pan-style pizzas.
Getting hydration right for your style is the difference between dough that handles easily and dough that tears, sticks, or comes out dense.
Hydration by Pizza Style
| Style | Hydration Range | Character |
| Neapolitan | 60–65% | Thin, charred, soft center |
| New York | 65–70% | Foldable, chewy crust |
| Sicilian | 70–75% | Thick, airy, focaccia-like |
| Detroit | 65–70% | Crispy edges, thick base |
These are starting points. Once you understand hydration you’ll start adjusting within these ranges based on your flour, your kitchen temperature, and personal preference.
How to Calculate Hydration for Any Recipe
Say you want to make dough for 4 Neapolitan pizzas at 65% hydration. A typical Neapolitan pizza uses around 250g of dough per ball, so you need 1000g total dough weight.
Working backwards using baker’s percentages:
- Flour is always 100%
- Water is 65% of flour
- Salt is typically 2.8% of flour
- Yeast is typically 0.1–0.3% of flour depending on fermentation time and temperature
If flour = 600g:
- Water = 600 × 0.65 = 390g
- Salt = 600 × 0.028 = 17g
- Yeast (fresh) = 600 × 0.002 = 1.2g
Total dough weight ≈ 1008g — close enough for 4 balls at 250g each.
The catch: this gets complicated fast when you factor in cold fermentation (which requires less yeast), preferments like poolish or biga (which contribute their own water and flour to the total), or scaling up to larger batches.
How a Pizza Dough Hydration Calculator Helps
Doing this math manually is fine for a simple recipe. But the moment you introduce a 48-hour cold ferment, a poolish, or want to scale from 4 pizzas to 20, the calculations get tedious and error-prone.
A pizza dough hydration calculator handles all of this instantly:
- You enter your flour weight (or desired dough weight)
- Set your target hydration percentage
- Set your pizza style, fermentation time, and temperature
- Get exact amounts for flour, water, yeast, salt and preferment if needed
Pizzalator is a free Android app that does exactly this. It supports Neapolitan, New York, Sicilian, Detroit, and custom styles, adjusts yeast automatically for cold vs room-temperature fermentation, and handles biga and poolish ratios without any manual calculation.
Download Pizzalator free on Android
Common Hydration Mistakes
Using the Wrong Flour
Different flours absorb water differently. Italian 00 flour absorbs less water than high-protein bread flour. A recipe written for 00 at 65% will feel wetter if you use bread flour. If you’re substituting flour, drop hydration by 2–3% and adjust from there.
Adding All the Water at Once
With high-hydration doughs especially, add water gradually and let the flour absorb it before adding more. This prevents a soupy mess that’s hard to recover.
Not Accounting for Preferments
If your recipe includes poolish or biga, those already contain flour and water at a specific ratio, they contribute to your total hydration. A calculator that supports preferments handles this automatically. Doing it manually is where most people make mistakes.
Ignoring Temperature
Fermentation speed depends heavily on temperature. The same recipe at 18°C and 24°C will behave completely differently. If you’re cold-fermenting, your yeast amount needs to drop significantly, typically by 50–70% compared to a room-temp proof.
Frequently Asked Questions
What hydration should a beginner start with?
Start at 63–65%. It’s forgiving enough to handle easily but produces a great crust. Once you’re comfortable with how the dough feels you can experiment upward.
Does higher hydration always mean better pizza?
No. Higher hydration produces a more open crumb and chewier crust, which suits some styles. But Neapolitan at 62% is not inferior to a sourdough at 75%. They’re different styles with different goals.
Can I use a bread hydration calculator for pizza?
Technically yes for the basic water-to-flour ratio. But pizza dough calculators handle yeast scaling, fermentation timing, and preferment ratios that a generic bread calculator won’t.
How do I adjust hydration for cold fermentation?
Hydration percentage itself doesn’t change, but your yeast amount drops significantly. For a 48-hour cold ferment at 4°C, use roughly 0.1% fresh yeast of total flour weight. Pizzalator adjusts this automatically when you set your fermentation time and temperature.
Calculate your exact pizza dough ratios instantly, download Pizzalator free on Android.