What is 175 degrees Celsius in gas mark?
Quick Answer: Gas Mark 4 = 180°C = 347°F · "moderate or medium" oven
At a glance
- Fan oven: 160°C (lower by 20°C)
- Electric oven (non-fan): 170°C (lower by 10°C)
- Scale context: Gas Mark ¼ (110°C) to 9 (240°C) (UK standard)
Gas Mark Calculator
- Gas mark 4
- 347 degrees Fahrenheit (°F)
- 165 electricity oven (°C)
- 155 electricity fan-assisted oven (°C)
This Oven Temperature Converter will help you to easily and quickly convert from gas mark temperatures to other temperature units and vice-versa. This tool converts between Gas Mark, Fahrenheit, Celsius, °C Electricity oven and °C Electricity fan-assisted oven. It is also possible to find the meaning of "moderately hot" or "hot" oven temperatures and the equivalent value in gas mark or degrees.
Oven temperature conversion chart
| Fahrenheit (°F) |
Celsius (°C) |
Gas Mark |
Standard Phrases |
|---|---|---|---|
| 225°F | 110°C | ¼ | Very Slow / Very Low |
| 250°F | 120°C | ½ | Very Slow / Very Low |
| 275°F | 140°C | 1 | Slow / Low |
| 300°F | 150°C | 2 | Slow / Low |
| 325°F | 160°C | 3 | Moderately Slow / Warm |
| 350°F | 180°C | 4 | Moderate / Medium |
| 375°F | 190°C | 5 | Moderate / Moderately Hot |
| 400°F | 200°C | 6 | Moderately Hot |
| 425°F | 220°C | 7 | Hot |
| 450°F | 230°C | 8 | Hot / Very Hot |
| 475°F | 240°C | 9 | Very hot |
Celsius values follow the UK kitchen convention of rounding to the nearest 10°C — that's how recipes and cookbooks actually cite oven temperatures. The standard Gas Mark scale runs from ¼ (very slow) to 9 (very hot). For temperatures above 240°C / 475°F, use Celsius or Fahrenheit directly.
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About Electricity and Fan-assisted and Electricity Ovens
When using a fan-assisted oven, you should lower the temperature by 20 degrees C, so if a recipe gives a temperature of 230 C, lower it to 210 °C in a fan-assisted oven. If you use a electric oven, just lower the temperature by 10 °C, ie. from 230 to 220 °C for the previous example.
To find the equivalence between degrees Celsius (degrees Celsius) and other temperature units used in cooking like gas mark or even descriptions like low, slow, high or moderate temperature, you can also use the temperature conversion chart above.
Note: the conversion table above uses approximate values sufficient to be precise for cooking purposes. But, please note that different manufacturers and oven types do vary, so this converter cannot give an exact indication. The best way to be sure about the oven temperature is to calibrate the scale using an oven thermometer.
Fan oven vs gas mark — what's the difference?
Fan-assisted ovens (also called "convection" in the US) have an internal fan that circulates hot air, which cooks faster and more evenly than a static gas oven at the same dial temperature. The rule: lower by 20°C when converting from a gas or conventional electric oven recipe to a fan oven.
Example: a recipe says "Gas Mark 6 / 200°C". In a fan oven, set 180°C. In an electric (non-fan) oven, set 190°C (-10°C only).
Many modern ovens have both modes. If unsure which your recipe assumes, check whether the UK recipe says "gas", "electric", or "fan" — and adjust accordingly.
What if my temperature is between gas marks?
Gas marks are discrete settings — there's no "Gas Mark 4½" on a dial. When a recipe calls for a temperature that doesn't land exactly on a mark (like 160°C, 175°C, or 375°F), pick the nearest setting and adjust cooking time if needed:
- 160°C → Gas Mark 3 (160°C exactly) — perfect match
- 170°C → between Gas Mark 3 (160°C) and 4 (180°C) — lean toward GM 3 for slow bakes, GM 4 for faster cooking
- 175°C → use Gas Mark 4 (180°C) and check 2–3 min earlier than the recipe says
- 210°C → between Gas Mark 6 (200°C) and 7 (220°C) — lean toward GM 6 for bakes, GM 7 for roasts
- 375°F → Gas Mark 5 (375°F exactly) — perfect match
- 425°F → Gas Mark 7 (425°F exactly) — perfect match
For precision baking (bread, pastries, custards, soufflés), use a Celsius or Fahrenheit display rather than gas marks — the ~14°C gap between marks matters. For forgiving dishes (casseroles, roasts, stews), the nearest gas mark is close enough.
What does "slow", "moderate", "hot" oven mean?
Old recipes often describe oven temperature in words rather than numbers. Here's the modern translation:
- Very slow / very low: Gas Mark ¼–½ (110–120°C / 225–250°F)
- Slow / low: Gas Mark 1–2 (140–150°C / 275–300°F)
- Moderately slow / warm: Gas Mark 3 (160°C / 325°F)
- Moderate / medium: Gas Mark 4 (180°C / 350°F) — the default baking temperature
- Moderately hot: Gas Mark 5–6 (190–200°C / 375–400°F)
- Hot: Gas Mark 7–8 (220–230°C / 425–450°F)
- Very hot: Gas Mark 9 (240°C / 475°F)
Frequently Asked Questions
What is Gas Mark 4 in Celsius?
Gas Mark 4 is 180°C (or 350°F). This is the most common baking temperature and is usually called "moderate" or "medium" oven. For a fan-assisted oven, lower to 160°C; for an electric oven, 170°C.
What is Gas Mark 6 in Celsius?
Gas Mark 6 is 200°C (or 400°F). This is "moderately hot" oven territory, commonly used for roasting vegetables, baking bread, and cooking pizzas. Fan oven: 180°C. Electric: 190°C.
What is Gas Mark 7 in Celsius?
Gas Mark 7 is 220°C (or 425°F). This is a "hot" oven, used for roast chicken, pastries, and seared meats. Fan oven: 200°C. Electric: 210°C.
What temperature is Gas Mark 9?
Gas Mark 9 is 240°C (or 475°F), the highest standard gas mark, described as "very hot". Used for pizza crusts, Yorkshire pudding, and searing. Fan oven: 220°C. Electric: 230°C. Gas Mark 9 is the top of the standard UK scale; higher temperatures (250–260°C) go beyond it.
What does "moderate oven" mean?
In UK recipes, "moderate" or "medium" oven means approximately Gas Mark 4 (180°C, 350°F). "Slow" is Gas Mark 1–2 (140–150°C). "Moderately hot" is Gas Mark 5–6 (190–200°C). "Hot" is Gas Mark 7–8 (220–230°C). "Very hot" is Gas Mark 9 (240°C).
Do I lower the temperature for a fan oven?
Yes — lower by 20°C for fan-assisted ovens. A recipe that says "Gas Mark 4 / 180°C" becomes 160°C in a fan oven. This is because the fan circulates heat more efficiently, so the effective cooking temperature is higher than the dial reading. For electric (non-fan) ovens, lower by 10°C.
Does the Gas Mark scale go up to 10?
No. The standard UK Gas Mark scale runs from ¼ (very slow, ~110°C) to 9 (very hot, 240°C). Gas Mark 10 is sometimes mentioned but is not part of the official scale recognised by Wikipedia, AEG, Which?, or UK cookbook standards. If a recipe calls for temperatures above 240°C, use Celsius or Fahrenheit directly.
What Gas Mark is 350°F?
350°F is Gas Mark 4 (180°C). This is the default "moderate" oven temperature in both US and UK baking, suitable for most cakes, casseroles, and roasts.
What if my temperature is between gas marks?
Gas marks are discrete settings — there's no "Gas Mark 4½". For temperatures that don't match a mark exactly (like 160°C, 175°C, or 375°F), pick the nearest mark and adjust cooking time 2–3 minutes if needed. 175°C is close to Gas Mark 4 (180°C). 210°C falls between Gas Mark 6 (200°C) and 7 (220°C). For precision baking like bread and custards, use Celsius or Fahrenheit directly since the ~14°C gap between marks matters.
Sample Oven Temperature Conversions
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This page uses the standard UK/Ireland Gas Mark scale (¼ to 9) as defined by Wikipedia, the UK Which? consumer guide, and standard cookbooks such as BBC Good Food and Pinch of Nom. Celsius values shown in the table use the kitchen convention of rounding to the nearest 10°C, matching how UK recipes actually cite temperatures. Fan oven adjustment (-20°C) and electric oven adjustment (-10°C) follow AEG and manufacturer recommendations.