Oven Temperature Converter (°F / °C / Gas Mark)
Convert oven temperatures between Fahrenheit, Celsius, and UK Gas Mark, with a plain-language description (low, moderate, hot).
Result
- Fahrenheit350 °F
- Celsius177 °C
- Gas Mark4
- DescriptionModerate oven
Step-by-step
- Starting from 350 °F.
- °C = (°F − 32) × 5/9 = (350 − 32) × 5/9 = 176.7 °C.
- Gas Mark ≈ (°F − 250) ÷ 25 = (350 − 250) ÷ 25 → 4; this is a moderate oven.
How to use this calculator
- Choose which scale your temperature is in: Fahrenheit, Celsius, or Gas Mark.
- Enter the value (for Gas Mark, use 0.25 for ¼ and 0.5 for ½).
- Read the equivalent in all three scales plus a plain-language description.
- For a fan/convection oven, drop the converted dial temperature by ~20 °C (one Gas Mark).
About this calculator
Recipes from different countries specify oven temperatures in different ways: the US uses degrees Fahrenheit, most of the world uses degrees Celsius, and British recipes often use the Gas Mark scale of gas ovens. This converter translates between all three and adds a plain-language description — from a "very low / cool" oven up to "very hot." Fahrenheit and Celsius convert exactly with the standard formula °C = (°F − 32) × 5⁄9. The Gas Mark scale is linear above Gas Mark 1: Gas Mark 1 equals 275 °F (about 140 °C), and each mark up adds 25 °F, so Gas Mark 4 is 350 °F — the classic "moderate oven" used for most baking. Below Gas Mark 1, the ¼ and ½ marks correspond to roughly 225 °F and 250 °F for slow roasting and dehydrating. Note that fan (convection) ovens run hotter than the dial, so reduce by about 20 °C or one Gas Mark.
How it works — the formula
°C = (°F − 32) × 5/9 | °F = °C × 9/5 + 32
Gas Mark → °F = 250 + 25 × mark (Gas Mark 1 = 275 °F)
°F → Gas Mark ≈ (°F − 250) ÷ 25Fahrenheit and Celsius share the exact linear relationship defined by the freezing (32 °F = 0 °C) and boiling (212 °F = 100 °C) points of water. The Gas Mark scale is linear above mark 1 at 25 °F per step.
Worked examples
- Inputs:
- from=f, value=350
- Output:
- 176.7 °C (≈180), Gas Mark 4 — moderate
- Inputs:
- from=c, value=200
- Output:
- 392 °F, Gas Mark 6 — moderately hot
- Inputs:
- from=gas, value=7
- Output:
- 425 °F, 218 °C — hot
Limitations
- Gas Mark °C equivalents follow the conventional rounded UK oven chart.
- Does not auto-adjust for fan/convection ovens — subtract ~20 °C yourself.
- Below Gas Mark ¼ the scale is shown descriptively, not numerically.
Conversions are exact for °F↔°C; Gas Mark mappings use the standard oven chart.