Cooking Temperature Converter
Convert °F, °C, and UK gas marks for oven recipes from any source.
Written by Golam Rabbani, Founder & Lead Engineer
How to use this cooking temperature converter
- Pick the input unit — °F, °C, or Gas mark.
- Type the temperature for °F or °C, or choose a gas mark from the list.
- Hit Convert to see the equivalent in the other two units.
- Read the gas mark description (warm, moderate, hot, very hot) for a sense of the regime.
- Use Copy to put the result on your clipboard, or Reset to start over.
About this cooking temperature converter
A UK recipe says "gas mark 6", an American one says 400 °F, and your oven might only show Celsius. The cooking temperature converter unifies all three with the standard BBC Good Food gas-mark table: each mark increment is about 25 °F (~14 °C), with gas mark 4 = 350 °F = 180 °C as the baseline "moderate" oven. Celsius and Fahrenheit are interconverted using the exact relation °C = (°F − 32) × 5⁄9.
Worked example: a cake recipe says "180 °C, 35 minutes". Enter 180 in the °C field. The tool returns 356 °F (using exact conversion: 180 × 9⁄5 + 32) and gas mark 4 ("Moderate"). Push to a hot roast at gas mark 7 instead and the table maps that to 425 °F / 220 °C — perfect for browning. The thresholds for each gas mark match the UK standard (BBC Good Food, AGA cookery school), so when a vintage British cookbook says "gas mark 1, very slow" you can trust the conversion to 275 °F / 140 °C.
FAQ
- What is a gas mark?
- A simplified UK gas-oven dial scale. Marks 1/4 and 1/2 cover the lowest temperatures (225–250 °F), while 1 through 9 step up in roughly 25 °F increments to 475 °F.
- Why do oven temperatures round differently from raw math?
- The standard chart uses convenient round values (160 °C for gas mark 3 rather than 162.78 °C from direct conversion) because oven dials and thermostats are not that precise. The tool reports both — exact maths and the nearest gas mark.
- Do I need to adjust for a fan oven?
- Most fan / convection ovens run about 20 °C (35 °F) hotter than the dial reading suggests, so most UK recipes already include "fan: reduce by 20 °C" — drop one gas mark for fan-assist.
- Is the °C ↔ °F formula exact?
- Yes — °C = (°F − 32) × 5⁄9, °F = °C × 9⁄5 + 32. The tool uses those formulas directly, no rounding inside the math.
- What about Celsius for very low or very high temperatures?
- The calculator accepts −20 to 500 °C, which covers freezer storage and pizza ovens. Outside that range it warns you — cooking applications rarely need beyond it.
- Is the converter free?
- Yes — free, no signup, no usage cap.