⚖️ Comparison · Updated for 2026

Gas Mark vs Celsius (°C)

Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.

Quick answer: Gas mark 4 = 180°C = 350°F — the standard 'moderate' baking temperature. Gas marks run 1 (very low, 140°C) to 9 (very high, 240°C). UK recipes pre-1980 often only give gas marks; modern UK recipes use °C. Fan-assisted ovens need 20°C less.
Decision guide — when to use which
Use Gas Mark when…

Older UK recipes, British baking heritage books, gas-only cookers without °C dial.

Use Celsius (°C) when…

Modern UK, European and Australian recipes. Precision temperature control.

📊 Side-by-side comparison
Aspect Gas Mark Celsius (°C)
Very low Gas ¼-1 120-140°C
Low Gas 2 150°C
Moderate Gas 4 180°C
Hot Gas 6 200°C
Very hot Gas 8-9 230-240°C
Fan oven note Same Reduce by 20°C

Frequently asked

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What is gas mark 4 in Celsius?

180°C (350°F). This is the most common baking temperature — Victoria sponge, most biscuits, roast chicken (after initial high heat). If a recipe says 'moderate oven', it means gas mark 4 / 180°C.

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My oven only has numbers, not degrees. What are they?

Some electric ovens have an unmarked numeric dial, but there is no universal mapping to temperature and calibration varies by brand. Check the manual and use an oven thermometer to find out what each number really gives.

Reviewed for 2026. This comparison is general guidance based on publicly available information. Prices, rates, rules and specifications change, so check current details with the provider or an official source before making a decision. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project. We don't sell SEO links or accept paid placements in this content.

Frequently asked questions

What is gas mark 4 in Celsius?

180°C (350°F). This is the most common baking temperature — Victoria sponge, most biscuits, roast chicken (after initial high heat). If a recipe says 'moderate oven', it means gas mark 4 / 180°C.

My oven only has numbers, not degrees. What are they?

Some electric ovens have an unmarked numeric dial, but there is no universal mapping to temperature and calibration varies by brand. Check the manual and use an oven thermometer to find out what each number really gives.