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Everyday figures, converted.

Free everyday converters: oven temperature with gas marks and fan settings, shoe sizes for men, women and kids, and Roman numerals. Worked out in your browser, with the working shown.

Try it now: Oven Temperature Converter (°C, °F, Gas Mark)

For a gas mark, type 1/4, 1/2 or a number from 1 to 9.

The recipe is written for a
My oven is a
Assumptions (editable)
°C
°F

A fan-forced oven is set lower than a conventional oven for the same recipe. 20 °C is the usual figure (Which?) and 25 °F the usual US rule of thumb. Both are editorial rules of thumb, and 20 °C is 36 °F, so they are not the same size. Many ovens adjust automatically. Check your manual.

Set your oven toabout 350 °F
Exact in °C180 °C
Exact in °F356 °F
Nearest gas markGas mark 4 (180 °C)
Fan-forced oven setting160 °C / 320 °F

180 °C × 9 ÷ 5 + 32 = 356 °F. The dial value is rounded to the nearest 10 °C or 25 °F.

Ovens vary, so use an oven thermometer to check.

Fig. 1 Your oven temperature, on every scale.

Every formula is tested against worked examples. How we check

Gas markConventional °CConventional °FFan-forced °CFan-forced °F
¼110 °C225 °F90 °C200 °F
½120 °C250 °F100 °C225 °F
1140 °C275 °F120 °C250 °F
2150 °C300 °F130 °C275 °F
3160 °C325 °F140 °C300 °F
4180 °C350 °F160 °C325 °F
5190 °C375 °F170 °C350 °F
6200 °C400 °F180 °C375 °F
7220 °C425 °F200 °C400 °F
8230 °C450 °F210 °C425 °F
9240 °C475 °F220 °C450 °F

Fig. 2 Common oven temperatures on every scale, with the fan-forced setting. Gas marks are for conventional ovens.

Open the full oven temperature converter (°c, °f, gas mark) page for the chart, working and FAQs.

Converters

Oven Temperature Converter (°C, °F, Gas Mark)Celsius, Fahrenheit and gas mark, with the fan-forced adjustment.Shoe Size Converter (AU, UK, US, EU)AU, UK, US and EU sizes for men, women and kids, or by foot length.Roman Numeral ConverterNumbers, numerals and dates, with the working.

How Convertfig works

Every converter shows its working, so you can see how each answer was reached and check it by hand. Charts and offsets, such as gas marks and shoe size systems, come from named published sources, linked on the page with the date we last checked them. Where sources disagree we say so, and where a rule is our own, such as the temperature adjustment for ovens with a fan or the foot allowance for shoes, it is labelled as an editorial rule of thumb you can change. Everything is calculated in your browser, and nothing you type is sent to us.

There are separate US, UK and Australian versions because wording and date order differ. Spotted an error? Email hello@convertfig.com and we will check it against the source and correct the page.

Worked examples