The Ultimate Oven Temperature Conversion Guide

Published: 2024-01-05

Author: Pastry Chef Sarah Johnson

Category: Baking

Read time: 6 minutes

Oven temperature conversions can be confusing, especially when recipes come from different countries. This guide will help you convert temperatures accurately for perfect baked goods every time.

Understanding Temperature Scales

Three main temperature scales are used in cooking:

• Celsius (°C) - Used in most countries worldwide
• Fahrenheit (°F) - Used primarily in the United States
• Gas Mark - Used in the UK and some Commonwealth countries

Essential Conversion Chart

Here are the most common baking temperature conversions:

°C    °F    Gas Mark    Description
---   ---   ---------   -----------
110   225   1/4         Very cool
120   250   1/2         
140   275   1           Cool
150   300   2           
160   325   3           Warm
180   350   4           Moderate
190   375   5           
200   400   6           Moderately hot
220   425   7           Hot
230   450   8           Very hot
240   475   9           
250   500   10          Extremely hot

Oven Calibration and Accuracy

Did you know most home ovens are not perfectly accurate? Here's how to check and adjust:

1. Use an oven thermometer - Place in center of oven
2. Check temperature in multiple spots - Ovens have hot spots
3. Preheat properly - Wait 15-20 minutes after reaching temperature
4. Consider convection - Reduce temperature by 25°F (15°C) for fan ovens