Oven Temperature Converter

--°C (Conventional)
--°F (Fahrenheit)
--Gas Mark
--Fan °C

Complete Oven Temperature Guide

Gas Mark°C°FFan °CDescription
¼11022590Very Cool / Very Slow
½130250110Very Cool
1140275120Cool / Slow
2150300130Cool
3160325140Warm / Moderate-Cool
4180350160Moderate
5190375170Moderate-Hot
6200400180Hot
7220425200Hot
8230450210Very Hot
9240475220Very Hot
10260500240Extremely Hot

Oven Temperature Conversion Guide

Different countries and different recipe traditions use different temperature scales for ovens. American recipes typically list temperatures in degrees Fahrenheit (°F), European recipes in Celsius (°C), and older British and Commonwealth recipes often reference Gas Marks. This oven temperature converter handles all four formats including Fan (fan-forced/convection) temperatures.

Fan Oven vs Conventional Oven

A fan oven (also called a convection oven or fan-assisted oven) circulates hot air with a fan, cooking food more evenly and efficiently than a conventional static oven. Because of this increased efficiency, fan ovens cook at approximately 20°C (or 25–50°F) lower than the equivalent conventional temperature. Most recipes that specify a conventional temperature can be cooked in a fan oven by reducing the temperature by 20°C and potentially shortening the cooking time by 10%.

Gas Mark Reference Guide

Gas Marks are used on gas ovens and range from ¼ (very cool, ~110°C) through to 10 (extremely hot, ~260°C). Gas Mark 4 (180°C / 350°F) is "moderate" and is the most common baking temperature for cakes, cookies, and bread. Gas Mark 6 (200°C / 400°F) is used for roasting vegetables and meats.

Common Baking Temperatures

  • 160°C / 325°F / Gas 3: Low and slow — fruit cakes, dense loaves.
  • 180°C / 350°F / Gas 4: Standard baking — most cakes, muffins, cookies.
  • 200°C / 400°F / Gas 6: Hot roasting — potatoes, vegetables, some breads.
  • 220°C / 425°F / Gas 7: Very hot — pizza, crusty breads, pastry.

Frequently Asked Questions

What is Gas Mark 4 in Celsius?
Gas Mark 4 is equivalent to 180°C (conventional oven), 160°C (fan oven), or 350°F. It is the standard "moderate" oven temperature used in most cake and biscuit recipes.
How much do I reduce the temperature for a fan oven?
Reduce the temperature by approximately 20°C (about 25–35°F) when using a fan oven compared to a conventional oven. Also check food 5–10 minutes earlier than the recipe suggests, as fan ovens cook faster.
What temperature is 350°F in Celsius?
350°F is approximately 177°C, which most ovens would be set to 180°C for practical purposes. This corresponds to Gas Mark 4 — the most common baking temperature.
Why do different ovens cook differently at the same setting?
Oven thermostats can be inaccurate, with variations of ±20–30°C from the set temperature. Hot spots also exist. Using an oven thermometer is the most reliable way to ensure your oven is at the correct temperature.