🍳 Kitchen Math

Free kitchen tools that actually work

No sign-up, no app to install (unless you want it), no ads blocking the numbers. Just the calculators you need mid-recipe, built with real ingredient data.

Scale a recipe

Recipe Scaler

Paste your ingredient list, tell it how many servings you actually need, and get every quantity recalculated — fractions included.

Cups to grams

Ingredient Converter

Flour, sugar and butter don't weigh the same per cup. Pick your ingredient and convert cups, tablespoons, grams and millilitres correctly.

Oven to air fryer

Air Fryer Converter

Turn any conventional oven recipe into air fryer temperature and time, using the standard conversion rule (with room to adjust).