About Kitchen Math Calculators

Last updated June 5, 2026

I cook from recipes written in three different measuring systems, so I built the converters and scalers I reach for every week. No black boxes — the conversion factors are all shown.

What’s on this site

Right now there are 6 calculators here: Cooking Conversion Calculator, Recipe Scaler, Air Fryer Converter, Pizza Dough Calculator, Cooking Time Calculator, and Baking Pan Size Converter. Each one is a single-purpose tool that shows its formula, lists its assumptions, and runs on any device with no signup.

Why these are different

Most calculator sites hand you a number and hide the formula. Every tool here does the opposite: the exact formula, the assumptions, and a worked example are shown right on the page, so you can check the result instead of trusting it blindly. There’s no account, no paywall, and no signup.

How the math is kept honest

Each formula is shown in full and was independently re-derived and spot-checked against the calculator’s code. Reference values (typical rates, averages, rules of thumb) are labeled as approximate and are editable, so you can put in your own real numbers. These are cooking estimates, not food-safety guidance — when in doubt about storage or doneness, follow USDA food-safety guidance.

Found a mistake?

I’d genuinely like to know. Email [email protected] and I’ll fix it.