Oven temperatures · gas mark guide
180°C to gas mark
180°C is gas mark 4 and 350°F on recipe charts (356°F exactly). Check if your recipe means a fan oven: if 180°C is the fan temperature, the conventional equivalent is 200°C, which is gas mark 6.
Chart checked against Delia Smith and Waitrose on .
Gas mark
4
on the chart
Fahrenheit
350°F
356°F exactly
Fan oven
160°C
if 180°C is conventional
If 180°C is fan
Gas 6
200°C conventional
Gas mark conversion chart
The row nearest to 180°C is gas mark 4.
| Gas mark | Conventional | Fan | Fahrenheit | Heat |
|---|---|---|---|---|
| Gas ¼ | 110°C | 90°C | 225°F | Very cool |
| Gas ½ | 120°C | 100°C | 250°F | Very cool |
| Gas 1 | 140°C | 120°C | 275°F | Very low |
| Gas 2 | 150°C | 130°C | 300°F | Very low |
| Gas 3 | 170°C | 150°C | 325°F | Low |
| Gas 4 | 180°C | 160°C | 350°F | Moderate |
| Gas 5 | 190°C | 170°C | 375°F | Moderately hot |
| Gas 6 | 200°C | 180°C | 400°F | Hot |
| Gas 7 | 220°C | 200°C | 425°F | Hot |
| Gas 8 | 230°C | 210°C | 450°F | Very hot |
| Gas 9 | 240°C | 220°C | 475°F | Very hot |
Conventional or fan?
UK recipes often give two figures, such as 200°C or 180°C fan. If yours just says 180°C, it usually means a conventional oven, so a fan oven should be set to 160°C and a gas oven to gas mark 4.
Exact conversion
180°C × 9 ÷ 5 + 32 = 356°F. The closest gas mark on the chart is gas mark 4, which is 180°C and 350°F.
What cooks at 180°C
Gas mark 4 is a moderate oven, the usual setting for most sponge cakes, brownies and traybakes. The settings either side are gas mark 3 (170°C, 325°F) and gas mark 5 (190°C, 375°F).
Other temperatures
- 150°C to gas mark (gas 2)
- 160°C to gas mark (gas 3)
- 170°C to gas mark (gas 3)
- 190°C to gas mark (gas 5)
- 200°C to gas mark (gas 6)
- 210°C to gas mark (gas 6)
gas mark 4 in full · Full gas mark conversion chart · Convert any temperature
Common questions
What gas mark is 180°C?
Gas mark 4.
What is 180°C in a fan oven?
160°C, if the recipe's 180°C is for a conventional oven.
What gas mark is 180°C fan?
A fan setting of 180°C matches 200°C in a conventional oven, which is gas mark 6.
What is 180°C in Fahrenheit?
356°F exactly, but recipes treat 180°C and 350°F as the same setting.
Sources and assumptions
- Conventional means an electric oven with the fan off. Fan settings are 20°C lower.
- Recipe charts round temperatures to the nearest 10°C or 25°F, so exact conversions differ by a few degrees.
- Delia Smith: oven temperatures and conversions (gas marks 1 to 9, fan ovens)
- Waitrose: conversion charts (gas marks ¼ and ½)
Ovens vary. An oven thermometer shows what yours is really doing.