Gas Mark Converter
Convert gas mark to Celsius, Fahrenheit and the fan-oven setting, both ways. Gas mark 4 is 180°C or 350°F, the moderate oven most baking uses. Enter a gas mark to read its degrees, or enter °C or °F to find the gas mark, with a full gas mark 1 to 9 chart below.
Turn a gas mark into degrees, or a temperature into a gas mark, without hunting for a table. Convert gas mark to Celsius and Fahrenheit, or enter °C or °F to find the gas mark, plus the fan-oven setting. Gas mark 4 is 180°C or 350°F, the moderate oven most baking uses.
- Ingredient-aware accuracy
- 100% free
- No sign-up, no app
- Instant as you type
- Works offline after first load
Moderate oven. Fan setting is about 20°C lower than the conventional figure.
Common oven temperatures
| °F | °C | Fan °C | Gas | Description |
|---|---|---|---|---|
| 284 | 140 | 120 | 1 | Cool |
| 302 | 150 | 130 | 2 | Cool |
| 320 | 160 | 140 | 3 | Moderate |
| 356 | 180 | 160 | 4 | Moderately hot |
| 374 | 190 | 170 | 5 | Moderately hot |
| 392 | 200 | 180 | 6 | Hot |
| 428 | 220 | 200 | 7 | Very hot |
| 446 | 230 | 210 | 8 | Very hot |
| 464 | 240 | 220 | 9 | Very hot |
How to use it
- 1
Enter a gas mark
Type a gas mark from 1 to 9, or switch the scale and enter a temperature in Celsius or Fahrenheit instead.
- 2
Read the degrees
See the matching Celsius and Fahrenheit, plus the lower fan-oven setting, all at once.
- 3
Check the chart
Use the gas mark 1 to 9 chart to find any setting and what it is in °C and °F.
When it comes in handy
Using an old recipe
Older UK recipes give a gas mark with no degrees. Turn gas mark 6 into 200°C or 400°F to set a modern dial.
Setting a gas oven
Your recipe gives Celsius or Fahrenheit but your oven shows gas marks. Convert 180°C to gas mark 4 in one step.
Switching to a fan oven
Find the lower fan-oven temperature for a gas mark so a recipe written for a gas oven does not overbake.
Instant, exact & 100% in your browser
The conversion runs right here in your browser using exact, standard factors. Nothing you type is sent to a server, there is no sign-up and no limit, and once the page has loaded it keeps working even with no connection.
Frequently asked questions
- What is gas mark 4 in Celsius?
- Gas mark 4 is 180°C, or about 350°F. It is the moderate oven most baking and roasting recipes use, so it is the gas mark worth remembering. Gas mark 4, 180°C and 350°F all mean the same setting.
- How do I convert gas mark to degrees?
- Each gas mark is roughly 14°C apart, starting from gas mark 1 at 140°C. So gas mark 2 is 150°C, gas mark 4 is 180°C, gas mark 6 is 200°C and gas mark 9 is 240°C. Enter any gas mark above and the converter gives the exact Celsius and Fahrenheit, or use the chart for the common points.
- What gas mark is 180°C?
- 180°C is gas mark 4, which is also 350°F. To go the other way, the converter rounds any temperature you enter to the nearest gas mark, since a gas dial has no in-between settings. 200°C is gas mark 6 and 220°C is gas mark 7.
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