KINSMCTHE KINSMC KITCHEN · FREE TOOLS
A little less kitchen maths.
Scale ingredient quantities for a different number of servings, or convert an oven setting between Celsius and Fahrenheit.
Calculations stay in your browser. Nothing you enter is sent or saved by this tool.
RECIPE SCALER
Change the servings.
Enter quantities as decimals or fractions, such as 0.5, 1/2 or 1 1/2. Keep the original units.
OVEN TEMPERATURE
Celsius or Fahrenheit?
This changes the unit only. It does not adjust for a fan oven, gas mark, cooking time or your oven’s calibration. Follow the recipe and appliance instructions for those changes.
How the maths works
Scaling ingredients
New quantity = original quantity × wanted servings ÷ original servings.
For example, scaling from 4 servings to 7 uses a multiplier of 1.75. A quantity of 250 g becomes 437.5 g; 1½ tablespoons becomes 2.625 tablespoons. The unit is unchanged.
The output is an arithmetic starting point. Cooking times, pan dimensions and temperatures do not scale by that same multiplier. Check the recipe when changing batch size, especially for baking. Small quantities may need a more precise scale or a smaller measuring unit.
Converting temperature
°F = (°C × 9 ÷ 5) + 32.
°C = (°F − 32) × 5 ÷ 9.
For example, 180°C is exactly 356°F. That is a unit conversion, not an instruction to change a recipe’s stated oven setting.
Conversion reference: NIST Guide to the SI: temperature conversion factors.
Results are rounded for display. The temperature converter accepts oven settings from 0°C to 550°C, equivalent to 32°F to 1022°F.
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