Skip to content
CrumbCalc

9 free calculators · every diagram to scale

Baking math, solved instantly

Pan sizes, cups to grams, recipe scaling, oven temperatures — the conversions every baker hits, answered as you type. No sign-up. Nothing leaves your browser.

Try the pan converter All 9 calculators

Pan & size

See all →

Cake Pan Converter

Convert any recipe between pan sizes — see both pans drawn to scale with batter fill levels, plus adjusted bake time and temperature.

Cake Serving Calculator

How many people does your cake feed? Party and wedding serving counts for round, square and sheet cakes — single or tiered — from the Wilton chart.

Pan Volume Calculator

How much does your pan hold? Get the exact volume of any baking pan in cups, millilitres and litres, plus the batter it takes at a two-thirds fill.

Ingredients & measurements

See all →

Cups to Grams Converter

Convert cups, tablespoons and ounces to grams for 40+ baking ingredients using tested ingredient densities. Instant and accurate.

Butter Converter

Convert butter between sticks, cups, tablespoons, grams and ounces — every equivalent at once, drawn to scale as sticks.

Recipe Scaler

Paste a recipe and scale it to any number of servings. Smart fractions, unit-aware, works with cups, grams and ounces.

Bread & dough

Sourdough Hydration Calculator

Calculate your sourdough's true hydration in baker's percentages — correctly counting the flour and water inside your starter — and hit any target hydration.

Yeast Converter

Convert between fresh, active dry and instant yeast by weight — with packet counts. The standard 1 : 1.25 : 3 ratio, done for you.

Oven & temperature

Oven Temperature Converter

Convert between Fahrenheit, Celsius, gas marks and fan (convection) oven temperatures with one click.

Baking calculators that respect the chemistry

Baking is chemistry, and chemistry runs on ratios. Swap an 8-inch pan for a 9x13, halve a cookie recipe, or follow a European recipe written in grams, and the ratios shift — that's where cakes sink, cookies spread, and bread refuses to rise. CrumbCalc exists to make those adjustments exact instead of approximate.

Every tool here is built on published test-kitchen data: pan capacities from standard manufacturer measurements, ingredient weights following the King Arthur Baking chart that US test kitchens treat as the reference, and the international gas mark and fan-oven conventions. The math runs entirely on your device — pages load fast, work offline after the first visit, and nothing you type ever leaves your browser.

Start with the cake pan converter — the only one we know of that draws both pans to scale and adjusts bake time by batter depth — or jump straight to cups to grams, the butter converter, the recipe scaler, or the oven temperature converter. New calculators ship every month.