Oven Temperature Converter
Convert between Fahrenheit, Celsius, and gas marks.
Frequently Asked Questions
How do I convert oven temperatures between F and C?
Fahrenheit to Celsius: subtract 32, then multiply by 5/9. 350F = (350-32) x 5/9 = 177C. Celsius to Fahrenheit: multiply by 9/5, then add 32. 180C = (180 x 9/5) + 32 = 356F. In practice, oven temps are rounded: 350F = 180C, 375F = 190C, 400F = 200C. The converter handles exact and standard rounded values.
What are gas marks and how do they convert?
Gas marks are used primarily in the UK and some Commonwealth countries for gas oven settings. Gas Mark 1 = 275F/140C, GM 4 = 350F/180C, GM 6 = 400F/200C, GM 9 = 475F/245C. Each gas mark increment is roughly 25F/14C. The converter includes all standard gas mark values.
What temperature is "moderate oven" or "hot oven"?
Descriptive terms map to temperature ranges: Very slow/cool = 250-275F (120-135C). Slow/low = 300-325F (150-165C). Moderate = 350-375F (175-190C). Hot = 400-425F (200-220C). Very hot = 450-475F (230-245C). The converter shows these descriptions alongside the numeric temperatures.
Should I adjust temperature for convection ovens?
Yes — convection (fan-assisted) ovens circulate hot air, cooking more efficiently. Reduce the temperature by 25F (about 15C) or reduce cooking time by 25% compared to conventional oven settings. The converter includes a convection adjustment option that shows both conventional and convection temperatures.
Why do recipe temperatures differ between countries?
Recipes from the US use Fahrenheit, most of the world uses Celsius, and British recipes may use gas marks. Additionally, ovens are calibrated differently — home ovens can be off by 25F. Use an oven thermometer for accuracy. The converter bridges all three systems so you can follow any recipe regardless of origin.