Kitchen conversions · Your kitchen companion
Oven temperature converter
Find the oven setting for your recipe in Celsius, Fahrenheit, gas marks or fan Celsius.
A little help in the kitchen
How to use it
Enter the temperature or gas mark from your recipe and choose its scale. Fan input is Celsius.
Choose Convert temperature. Read the approximate cooking-chart equivalents and the separately labelled exact unit conversion.
For a temperature between chart rows, compare the nearest listed settings. Equally close rows both appear. Your entered value stays unchanged.
Check your oven maker's instructions before using the estimated fan setting. Save, share a link or print your conversion.
How it works
Gas marks use a lookup table, not an exact Celsius formula. Our conventional Celsius, Fahrenheit and gas-mark columns come from AEG's published cooking chart. Rounded cooking equivalents can differ from exact unit conversions.
Exact Fahrenheit = Celsius × 1.8 + 32. Exact Celsius = (Fahrenheit minus 32) ÷ 1.8. We keep full precision during calculation and display up to two decimal places. Fan input converts its own temperature, rather than the conventional setting. For gas input, the exact calculation starts from the chart's conventional Celsius value.
Estimated fan Celsius = conventional chart Celsius minus 20. This is the tool's specified adjustment, not a universal appliance instruction. AEG's own final fan entry uses a different reduction. Always follow your appliance's instructions.
The chart covers gas marks 1 to 9, conventional 140°C to 240°C or 275°F to 475°F, and estimated fan 120°C to 220°C. Fractional gas marks are not supplied by this source. Outside these ranges, the tool provides exact unit conversion without inventing a chart setting.
Frequently asked questions
What is gas mark 4 in Celsius and Fahrenheit?
The cooking chart pairs gas mark 4 with 180°C conventional and 350°F conventional. This tool's 20°C reduction gives an estimated 160°C fan setting.
Why does 180°C also show 356°F?
356°F is the exact unit conversion of 180°C. The cooking chart uses convenient rounded settings and lists 350°F. The two results are labelled separately so you can see which calculation is being used.
Should I subtract 20°C for every fan oven?
The tool uses that estimate as specified. Appliances and cooking modes can require different adjustments, so follow your oven maker's instructions. The chart does not adjust cooking time.
What happens if my recipe says 185°C?
Your input stays at 185°C, with an exact conversion of 365°F. It lies equally between the 180°C and 190°C chart rows, so both approximate cooking settings appear. Choose according to your recipe and appliance instructions.
Can I enter fractional gas marks or temperatures outside the chart?
Only gas marks 1 to 9 are verified in this chart; fractional marks are unsupported. Celsius, Fahrenheit and fan inputs outside chart coverage still give exact unit conversions, with an explanation that there is no verified chart match.
Can I save, share or print the conversion?
After converting, save the settings in this browser or share a link containing them. Saved and shared conversions reopen with their calculated result. Save as PDF includes your conversion and the general note. Delete my data clears saved settings and preferences from this browser.
