Focaccia Calculator
This calculator scales focaccia dough — flour, water, oil, and salt — to fit your specific pan size.
It uses a high-hydration ratio typical of traditional focaccia recipes.
Because focaccia dough is meant to fill its pan at a specific thickness for proper rise and texture, the calculator ties total dough weight directly to pan surface area rather than a flat per-loaf estimate.
How to Use the Focaccia Calculator
Reference Values
The Science Behind It
Focaccia uses a wetter dough than most breads, which creates its signature open, airy crumb. The higher oil content also contributes to the crisp bottom crust that develops in the pan. Source: Modernist Cuisine.
Modernist Cuisine's bread science research documents how focaccia's high hydration (typically 80-90%) creates steam pockets during baking that produce its signature open, airy crumb structure.
The generous olive oil content in focaccia dough, often 8-10% of flour weight by baker's percentage, contributes to both the crisp bottom crust and the bread's distinctive flavor.
Where This Shows Up
Home bakers scaling a focaccia recipe to fit a specific baking sheet size use this calculator to determine the right total dough weight for an even rise across the pan.
Bakers experimenting with focaccia toppings and flavor variations rely on a consistent base dough formula, adjusted only for pan size, to keep the crumb texture reliable across batches.
Home bakers who've invested in a specific-sized sheet pan for focaccia frequently use this calculator once, then reuse the same dough weight for every future batch in that pan.
A Worked Example
Say you're making focaccia for a half sheet pan (13×18 inches, about 234 sq in). A common rule of thumb is roughly 4.7g of dough per square inch for a good rise, which works out to about 1,100g of total dough — flour, water, oil, and salt combined, scaled from an 80-90% hydration base ratio.
Focaccia vs Standard Bread Hydration
| Focaccia | Standard Sandwich Bread | |
|---|---|---|
| Hydration | 80-100% | 60-65% |
| Oil content | 8-10% of flour weight | Minimal to none |
| Crumb texture | Very open, airy | Tighter, even |
Common Mistakes
- Using too little dough for a large pan, resulting in a thin, unevenly baked focaccia instead of the intended thick, airy texture.
- Skipping the resting period between shaping and baking, which doesn't allow the high-hydration dough enough time to develop its characteristic air pockets.
- Underestimating how much oil the dough and pan need, since focaccia relies on generous oil for its signature crisp bottom crust.
- Not accounting for a pan's material and color, since darker or thinner pans can bake the bottom crust faster than the calculator's general timing estimate.
- Not greasing the pan generously enough for a large-batch focaccia, since the dough's high hydration makes it especially prone to sticking.
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Frequently Asked Questions
Why is focaccia dough so wet?+
High hydration creates steam during baking, producing the large, irregular air pockets focaccia is known for.
How much dough do I need for a sheet pan?+
A standard half sheet pan (13×18 inches) typically needs about 1,100g of dough for a good rise.
Can I use this calculator for a round focaccia instead of a sheet pan?+
Yes, just calculate the round pan's area (π × radius²) instead of a rectangular pan's area, then apply the same dough-weight-per-area ratio.
Why does focaccia need more oil than most breads?+
The oil contributes to focaccia's signature crisp, almost fried bottom crust and helps prevent the wet dough from sticking to the pan.
Can I make focaccia in a round cake pan?+
Yes, calculate the round pan's area and use the same dough-weight-per-area ratio as a rectangular sheet pan.