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Pan Pizza Dough Hydration: Ratios That Actually Add Up

The Pan Has Opinions · Updated 2026-07-19 · 10 min read
Pan Pizza Dough Hydration: Ratios That Actually Add Up
In shortPan-pizza dough hydration is water weight divided by flour weight, multiplied by 100. With 300 grams flour and 210 grams water it is 70%; 600 grams flour and 438 grams water gives 73%. Count actual additions, including documented starter components, and list oil separately. Higher hydration does not guarantee an open crumb. These are calculations, not a complete cooking method. Do not taste raw flour or dough; follow a complete recipe and equipment instructions.
Contents

What is the pizza dough hydration ratio?

Pan-pizza dough hydration is the water weight divided by the flour weight, multiplied by 100. If a formula contains 300 grams flour and 210 grams water, the calculation is 210 ÷ 300 × 100 = 70%. That is a 70% hydration dough.

The percentage tells you how much water the formula carries relative to flour. It does not promise an airy crumb, identify the best flour, or reveal whether somebody actually proofed the dough. It is a useful number, not a tiny edible horoscope.

For consistent pan pizza, weigh flour and water in grams, keep oil as its own baker’s percentage, and scale the full formula by pan area. Then use feel, fermentation, and the baked crust to decide whether the number suits your flour and oven. These are calculations using the publication's existing formula weights, not a new cooking test. Do not taste raw flour or dough. Follow a complete recipe's cooking instructions.

Baker's percentages put flour at 100%

In baker’s math, the total flour is always 100%. Every other dough ingredient is expressed as a percentage of that flour weight.

Here is the existing 10-inch cast-iron formula, retained as a worked calculation:

Ingredient Weight Calculation Baker's percentage
Bread flour 300 g Reference 100%
Water 210 g 210 ÷ 300 × 100 70%
Salt 6 g 6 ÷ 300 × 100 2%
Instant yeast 1 g 1 ÷ 300 × 100 0.33%
Olive oil 9 g 9 ÷ 300 × 100 3%

Add the ingredient weights and the total dough is 526 grams. The rounded percentages add to approximately 175.33%, which is perfectly normal: that total compares all ingredients with flour; it is not the percentage composition of the finished dough.

Pan oil, sauce, cheese, and toppings stay outside the dough formula. If you add 18 grams oil to the skillet, it affects frying and flavour but does not transform the dough into 76% hydration.

Why grams beat cups here

Hydration is a weight ratio. Water is convenient because one millilitre weighs approximately one gram for ordinary kitchen use, but flour volume is fickle. A cup changes weight depending on how it was scooped, aerated, settled, or levelled.

For a hypothetical comparison, suppose one cook measures 2 1/2 cups of flour at 120 grams per cup, while another packs the same volume at 145 grams per cup. The first has 300 grams flour and, with 210 grams water, makes 70% hydration dough. The second has 362.5 grams flour, so the same water makes about 58% hydration dough. The cup count matches; the dough does not.

Use a digital scale that reads whole grams for flour and water. For tiny yeast quantities, use a suitable scale that reads tenths of a gram. Display resolution alone does not prove accuracy; follow its instructions and capacity limits. Put the bowl on the scale, tare to zero, and add each ingredient deliberately. If you overshoot the water by 10 grams, record the actual addition and recalculate.

What changing hydration actually changes

At the same flour weight, increasing hydration adds water and total dough mass. With 300 grams flour:

Hydration Water Difference from 70%
65% 195 g −15 g
70% 210 g Baseline
73% 219 g +9 g
75% 225 g +15 g

More water generally makes dough softer and more extensible. With suitable flour, fermentation, folding, proofing, and heat, it can support a more open crumb. King Arthur's hydration guide also describes the handling challenge and longer baking that wetter dough can require. Extra water can delay browning when the bake cannot remove moisture adequately, and overloaded dough can retain a gummy centre.

Lower hydration is easier to handle and can brown readily, but pushed too low it may resist stretching and bake dense or dry. Neither direction is morally superior. The useful question is whether the dough reaches the pan without tearing, traps fermentation gas, and bakes through before its toppings scorch.

Flour changes the feel at the same percentage

Two flours at 70% hydration can feel different. Protein quantity and quality, wheat variety, and milling affect absorption and strength. King Arthur's flour comparison describes higher absorption in its bread flour. Whole-grain flour also brings bran and germ, which alter water demand and gluten development. Age and storage can change dough performance too: a University of Florence research abstract reports storage-related changes in dough strength and tenacity in a biscuit study. That does not establish a pizza storage schedule.

That is why a percentage should travel with a method and an observation. The existing 70% cast-iron method aims for dough that is tacky but foldable after a rest. The existing 73% half-sheet formula is wetter and uses staged pressing with oiled fingertips. Those are method descriptions, not evidence that batch size itself makes wet dough easier.

For a small editorial comparison with unfamiliar flour, the existing suggestion is to hold back 3–5% of the water weight—about 6–10 grams from a 210-gram amount, or exactly 6.3–10.5 grams. Mix, rest for 20 minutes, then add the reserved water gradually if needed. This is a comparison option, not a replacement for a recipe's specified method or a universal rest time. King Arthur's rest-method comparisons show why results depend on the formula. Record what you actually used. Do not correct wetness by dusting in flour indefinitely; every handful changes hydration, salt percentage, yeast percentage, and total dough mass.

Oil is not hydration

Oil can tenderise and lubricate dough and carry flavour. Oil coating the pan assists the crisp, browned base through pan contact; do not confuse that role with oil mixed into dough. Tom Lehmann's explanation distinguishes oil's softening action from water absorption. Standard plain-water hydration calculations count water, not oil. In the cast-iron formula, 9 grams oil divided by 300 grams flour is 3% oil. Hydration remains 70%.

Ingredients such as milk, eggs, honey, mashed vegetables, and sourdough starter contain some water and some solids. Advanced formula comparison can account for their water contribution. For a simple flour-water-salt-yeast-oil dough, keeping water and oil separate is both conventional and clear.

A starter requires particular care. A 100% hydration starter contains equal flour and water by weight. If a recipe adds 100 grams of that starter, it adds 50 grams flour and 50 grams water. Both belong in the final hydration calculation. Ignoring the starter’s flour makes the percentage wrong. In an original arithmetic example, adding that starter to 300 grams flour and 210 grams water gives 350 grams total flour and 260 grams total water: 260 ÷ 350 × 100 = approximately 74.286%. This is component accounting, not permission to add starter to a yeast recipe without adapting its complete method.

How do you account for water that never enters the dough?

Use actual additions, not the amount written beside the mixing bowl. Here is an original calculation exercise using 300 grams flour and an intended 210 grams water:

What actually enters the dough Water counted Hydration
All intended water 210 g 70%
9 g remains reserved 201 g 67%
6 g of that reserve is subsequently added 207 g 69%

The last line adds 6 grams to 201, not to 210. Water left in the reserve cup has not hydrated anything. Conversely, measured extra water incorporated during mixing belongs in the numerator.

Flour added during handling belongs in the denominator if it becomes part of the dough. With 210 grams water and an extra 15 grams flour incorporated, the ratio becomes 210 ÷ 315 × 100 = approximately 66.667%. Salt, yeast, and oil percentages change too. Do not count loose flour that remains on the work surface as if it entered the batch.

This ledger is not a rescue recipe. Record additions rather than repeatedly adding water and flour in pursuit of an unrecorded feel. For the other ingredient ratios, use baker's percentages worked by hand.

Scale thickness with dough mass per area

Hydration controls a ratio; it does not decide how thick the pizza is. Thickness begins with dough mass divided by usable pan area.

For a rectangle:

area = interior length × interior width

For a circle:

area = π × radius²

The 10-inch skillet has a nominal radius of 5 inches, so its area is π × 5² = 78.54 square inches. Its 526-gram dough gives 526 ÷ 78.54 = 6.70 grams per square inch.

The half-sheet formula uses 1,070 grams dough over a nominal 13 × 18 = 234 square inches. That is 1,070 ÷ 234 = 4.57 grams per square inch. It is deliberately thinner per unit area than the cast-iron version.

Measure the flat interior rather than trusting the number on a label. Sloped sides, rounded corners, and generous rims reduce usable area. Compare usable area with usable area, or nominal area with nominal area. Do not mix the two measurement bases.

Example: scale a 10-inch recipe to 12 inches

A 12-inch round pan has a 6-inch radius. Its area is π × 6² = 113.10 square inches. Divide by the 10-inch pan’s 78.54 square inches:

113.10 ÷ 78.54 = 1.44

Multiply every dough ingredient by 1.44:

Ingredient 10-inch amount × 1.44 12-inch amount
Bread flour 300 g 300 × 1.44 432 g
Water 210 g 210 × 1.44 302.4 g
Salt 6 g 6 × 1.44 8.64 g
Instant yeast 1 g 1 × 1.44 1.44 g
Olive oil 9 g 9 × 1.44 12.96 g

The scaled dough weighs 757.44 grams. Divide by 113.10 square inches and it remains about 6.70 grams per square inch. Its hydration also remains 302.4 ÷ 432 × 100 = 70%.

For practical weighing, 302 grams water, 8.6 grams salt, 1.4 grams yeast, and 13 grams oil are sensible rounded amounts. Keep the flour at 432 grams. Round consciously and write it down; mystery rounding is how a repeatable recipe slowly becomes folklore.

Compare formulas without confusing batch size

A 600-gram-flour dough at 70% hydration contains 420 grams water. A 300-gram-flour dough at 73% contains 219 grams water. The first contains more water in absolute terms, but the second has the higher hydration.

Always divide water by flour before comparing. Batch weight tells you how much dough exists. Hydration tells you the water-to-flour ratio. Dough density tells you how much batch sits on each unit of pan. Those three numbers answer different questions.

Salt and yeast should also be compared as percentages. Six grams of salt in a 300-gram flour batch and 12 grams in a 600-gram flour batch are both 2%. The flavor balance stays constant while the batch doubles.

Diagnose the bake before changing the ratio

If the crumb is gummy, hydration may be too ambitious for the flour or oven. But first check proofing, topping moisture, sauce load, oven preheating, rack position, and whether the base browned. Our guide to fixing soggy pan pizza walks through those variables in order. King Arthur's pan-pizza method demonstrates the separate roles of sauce load, layering, and checking the base. Its recipe is different from the historical formula weights above.

If the dough tears while pressing, it may need more rest rather than more water. If it snaps back, it may be cold, under-rested, or under-fermented. King Arthur's pizza guide explains how a rest lets a resistant gluten network relax. If it spreads like batter after a long ferment, the flour may lack strength or the dough may be over-fermented. One symptom can have several causes. A sourdough crumb discussion explains the combined roles of flour, fermentation, strength, and gentle handling, rather than treating higher hydration as a guarantee.

Adjust hydration in 2–3 percentage-point steps. On 300 grams flour, a 2-point change is only 6 grams water. Keep the flour, salt, yeast, oil, fermentation, dough density, and bake as stable as possible, then compare. Notes are not glamorous, but neither is repeating the same disappointing pizza because nobody wrote down whether “a splash” meant 8 grams or 40.

The right hydration must fit the flour and complete cooking method. Do not use a browned edge alone as evidence that the centre has cooked. Use oven gloves with hot pans, follow cookware and oven limits, and do not improvise equipment or stovetop finishing methods.

Record the comparison and handle flour safely

Record flour identity, actual water and flour additions, rest and fermentation method, pan dimensions, dough mass per area, topping load, and oven setting. Keep the recipe and equipment consistent when comparing a 2–3 percentage-point change. The dough lab covers the neighbouring calculation questions. This is an observation record, not a promise that changing hydration fixes a particular bake.

The FDA says flour is a raw food. Do not taste raw dough or use it for children's play. Keep raw flour away from ready-to-eat foods, wash hands and equipment after contact, and follow package and complete recipe cooking directions. Do not attempt home heat-treatment to make flour safe to eat raw.

Sources

FAQ

What does 70% hydration mean in pizza dough?

It means the water weighs 70% as much as the flour. With 300 grams flour, multiply 300 by 0.70 to get 210 grams water. Flour is always the 100% reference in baker’s math. The percentage does not mean 70% of the finished dough is water; salt, yeast, oil, and the flour itself are also part of the total mass.

Is 70% hydration too wet for pan pizza?

Not necessarily, but it is tackier than a lower-hydration dough and different flours absorb water differently. The existing methods use wet or lightly oiled hands, folds rather than aggressive countertop kneading, and time for flour hydration. If an unfamiliar flour makes dough flow like batter, record a small water holdback for the next comparison instead of adding random flour. Follow the recipe's method. Do not taste raw dough.

Can I calculate hydration with cups?

Not reliably. Cups measure volume, and a cup of flour changes weight with scooping, settling, and brand. Hydration is a weight ratio, so use a gram scale for both flour and water; one millilitre of water is approximately one gram in an ordinary kitchen context. Cup equivalents can help serve, but they should not drive baker’s percentages.

Does olive oil count toward pizza dough hydration?

For these plain-water formulas, oil has its own baker's percentage: 9 grams oil with 300 grams flour is 3% oil, while 210 grams water gives 70% hydration. Milk, eggs, syrups, starters, and water-rich ingredients complicate comparison, and conventions differ. Record how compound ingredients are counted rather than treating oil as water or assuming every published formula uses an identical convention.

How do I scale pizza dough for a different pan?

Calculate each pan’s usable area, divide the new area by the original area, then multiply every dough ingredient by that factor. For rectangles, area is length times width; for circles, it is π times radius squared. Preserve hydration and all other baker’s percentages. Also preserve dough mass per square inch if you want comparable thickness rather than merely enough dough to reach the corners. Area scaling preserves a numerical loading, not a guaranteed baking time. Follow the complete recipe and equipment limits.

Does higher hydration always make airier pizza?

No. More water can support extensibility, but weak flour, over-fermentation, rough handling, insufficient proofing, excessive toppings, or an underpowered bake can still produce dense or gummy crumb. Steam also contributes during baking, but water alone does not guarantee retained gas or structure. Increase hydration only when the current method works, recording flour, schedule, pan, and loading. Do not taste a gummy centre; follow complete cooking instructions.