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Cooking Temperature Converter

Convert between Fahrenheit, Celsius, Gas Mark, and Fan Oven temperatures instantly. Includes recipe-rounded values, cooking presets, and a full Gas Mark reference table.

°F Fahrenheit
°C Celsius
GM Gas Mark
Fan Fan Oven °C
Enter a temperature in any field to convert

Gas Mark Reference Table

Click any row to load into the converter

Gas Mark °F °C (exact) °C (recipe) Fan °C Description

USDA Safe Internal Temperatures

Minimum internal temperatures for food safety

Meat Doneness °F °C Notes

About This Tool

Recipes come from everywhere — American cookbooks use Fahrenheit, European ones use Celsius, British recipes still reference Gas Mark numbers, and fan (convection) ovens need a lower temperature than conventional ones. This converter handles all four systems in one place so you never have to guess or Google "350 F to C" again. Type a temperature into any field and the other three update instantly. The converter shows both the exact mathematical result and the recipe-friendly rounded value that cookbooks actually use. For example, 350°F converts to exactly 176.67°C, but every recipe rounds that to 180°C — this tool shows you both so you know exactly what to set your oven to. Fan ovens (convection ovens) circulate hot air, so they cook more efficiently and need a lower temperature — typically 20°C (about 25°F) less than a conventional oven. If your recipe says 200°C but you have a fan oven, set it to 180°C. This converter does that math automatically.

How to Use

1. Click a preset button (e.g., "Baking Cake 350°F") for instant conversion, or type directly into any field 2. Enter a temperature in any of the four fields — Fahrenheit, Celsius, Gas Mark, or Fan Oven °C 3. All other fields update instantly with both exact and recipe-rounded values 4. Check the status bar below the inputs for a quick summary with the oven description 5. Scroll down to the Gas Mark reference table — click any row to load it into the converter 6. Use "Copy Link" to save or share a specific conversion via URL

Formula

Fahrenheit to Celsius: °C = (°F − 32) × 5/9 Celsius to Fahrenheit: °F = (°C × 9/5) + 32 Gas Mark to Fahrenheit: °F = (Gas Mark × 25) + 250 (for GM 1-10) Special cases: Gas Mark ¼ = 225°F, Gas Mark ½ = 250°F Fan Oven (convection): Fan °C = Conventional °C − 20 Recipe rounding: Nearest 5°C below 200°C, nearest 10°C at 200°C and above

Frequently Asked Questions

What is 350°F in Celsius?
350°F equals 176.67°C exactly, but recipes round this to 180°C. This is the most common baking temperature — used for cakes, cookies, casseroles, and many everyday recipes. If you have a fan (convection) oven, set it to 160°C instead.
What is Gas Mark 4 in Celsius and Fahrenheit?
Gas Mark 4 equals 350°F or 180°C (rounded for recipes). This is described as a 'Moderate' oven and is the standard baking temperature for cakes, biscuits, and casseroles. In a fan oven, use 160°C for the same result.
What is the difference between a fan oven and a conventional oven?
A fan oven (also called convection oven) has a fan that circulates hot air around the food, cooking it more evenly and efficiently. Because of this, fan ovens cook at a lower temperature — typically 20°C (about 25°F) less than a conventional oven. If a recipe says 200°C conventional, set your fan oven to 180°C. Most modern ovens have both conventional and fan settings.
What is a moderate oven temperature?
A 'moderate' oven is 350°F / 180°C / Gas Mark 4. This is the most commonly used oven temperature in cooking. Recipes that call for a 'moderate' or 'medium' oven mean this temperature. Below moderate: 'slow' or 'low' is 275-325°F (140-160°C). Above moderate: 'hot' is 400-450°F (200-230°C).
What temperature do you cook pizza at?
Homemade pizza bakes best at 475-500°F (245-260°C / Gas Mark 9) — as hot as your home oven goes. Professional Neapolitan pizza ovens reach 800-900°F (430-480°C). At home, preheat your oven to maximum for at least 30 minutes. Use a pizza stone or steel on the lowest rack for the crispiest base.
What are all the Gas Mark values in Celsius and Fahrenheit?
Gas Mark ¼ = 225°F / 110°C (Very Slow), GM ½ = 250°F / 120°C (Very Slow), GM 1 = 275°F / 140°C (Slow), GM 2 = 300°F / 150°C (Slow), GM 3 = 325°F / 160°C (Moderately Slow), GM 4 = 350°F / 180°C (Moderate), GM 5 = 375°F / 190°C (Moderately Hot), GM 6 = 400°F / 200°C (Hot), GM 7 = 425°F / 220°C (Hot), GM 8 = 450°F / 230°C (Very Hot), GM 9 = 475°F / 240°C (Very Hot), GM 10 = 500°F / 260°C (Extremely Hot).
Why do recipes round Celsius temperatures?
Exact conversions produce awkward decimals — 350°F is really 176.67°C. Recipes round to the nearest 5 or 10 degrees because oven thermostats aren't precise enough for the exact value to matter. A difference of 3-5°C has no noticeable effect on cooking. This converter shows both the exact value and the rounded recipe value so you can see what cookbooks use.

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