Quick answer
°C = (°F − 32) × 5/9 and °F = °C × 9/5 + 32. A 350 °F oven is 176.7 °C, usually set to 177 or 180 °C.
Choose a direction and enter a temperature. The calculator returns the converted value.
Related tools: Butter Conversion Calculator: Convert butter between sticks, tablespoons, cups, grams and ounces. Brine Concentration Calculator: Salt concentration of a brine by weight.
How to use the Oven Temperature Converter
- Choose convert: °F → °C, °C → °F and Gas mark → °F / °C.
- Optionally, enter temperature.
- Optionally, choose gas mark: 1/4, 1/2, 1, 2, 3 and 4 and 5 more.
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Convert | Choose one: °F → °C; °C → °F; Gas mark → °F / °C | Starts at °F → °C |
| Temperature (optional) | A number | — |
| Gas mark (optional) | Choose one: 1/4; 1/2; 1; 2; 3; 4; 5; 6; … | Starts at 4 |
Formula and method
Formula
°C = (°F − 32) × 5/9; °F = °C × 9/5 + 32
IEEE-754 double precision; shown to the decimals indicated.
Gas marks use the standard published table, which is rounded.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Convert = °F → °C; Temperature = 350.
| Result | Value |
|---|---|
| Temperature | 177 °C |
Example 2
Inputs: Convert = °C → °F; Temperature = 180.
| Result | Value |
|---|---|
| Temperature | 356 °F |
Example 3
Inputs: Convert = °F → °C; Temperature = 425.
| Result | Value |
|---|---|
| Temperature | 218 °C |
The first line is the headline result (temperature). IEEE-754 double precision; shown to the decimals indicated.
Common oven settings
300 °F = 150 °C, 325 °F = 163 °C, 350 °F = 177 °C, 375 °F = 190 °C, 400 °F = 204 °C and 425 °F = 218 °C. Gas mark 4 is about 350 °F (180 °C).
Fan ovens
Fan (convection) ovens usually need about 20 °C (25 °F) less than recipes for conventional ovens. Gas marks are approximate. An oven thermometer reveals if your oven runs hot or cold.
How the result changes with temperature
Holding every other input at the first worked example, this table changes only temperature. It shows how sensitive the answer is to that one value; each row was produced by running this calculator.
| Temperature | Temperature |
|---|---|
| 175 | 79 °C |
| 350 | 177 °C |
| 700 | 371 °C |
| 1400 | 760 °C |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Temperature: left empty shows "Enter a temperature." beside that field and no result.
Choosing between the Oven Temperature Converter and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Butter Conversion Calculator](/cooking/butter-conversion-calculator/) | i have and amount | Butter |
| [Turkey Thawing Time Calculator](/cooking/turkey-thawing-time-calculator/) | method and turkey weight | Thawing time |
| [Brine Concentration Calculator](/cooking/brine-concentration-calculator/) | salt and water | Brine concentration |
| [Rice to Water Ratio Calculator](/cooking/rice-water-ratio-calculator/) | rice and water per 1 part rice | Water needed |
| [Salt Percentage Calculator](/cooking/salt-percentage-calculator/) | salt and total weight | Salt |
Background: cooking measurements
For baking, weight is more reliable than volume. A cup holds a fixed volume but its weight depends on the ingredient's density, and a cup of flour can vary by 20 to 30 grams depending on how it is scooped, so published gram-per-cup values for the same ingredient differ from site to site. Spoon and level flour if you must measure by volume.
Check which cup a recipe uses: the US cup is 236.588 mL, while a metric cup is 250 mL.
Assumptions and limitations
- Gas marks are approximate
Cooking times are guides. Use a food thermometer to confirm safe internal temperatures.
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for temperature to confirm this.
Frequently asked questions
What is 180 °C in Fahrenheit?
About 356 °F, typically set to 350 °F.
What gas mark is 200 °C?
Approximately gas mark 6.
Should I adjust for a fan oven?
Lower the temperature by about 20 °C.
What does the Oven Temperature Converter calculate?
Convert °F, °C and UK gas marks. It returns Temperature.
What formula does the Oven Temperature Converter use?
°C = (°F − 32) × 5/9; °F = °C × 9/5 + 32. Gas marks use the standard published table, which is rounded.
What do I need to enter in the oven Temperature Converter?
You enter Convert. Optional: Temperature and Gas mark.
How is the result rounded or limited?
IEEE-754 double precision; shown to the decimals indicated. Gas marks are approximate.
What does the “Convert” option change?
It sets how the oven Temperature is worked out. The choices are °F → °C, °C → °F and Gas mark → °F / °C.
What is an example of a oven Temperature result?
With convert °F → °C and temperature 350, the temperature is 177 °C.
Where does the method come from?
The method follows: UK gas mark table (1/4 = 225 °F / 110 °C … 9 = 475 °F / 240 °C).
Can I rely on this converter for a decision?
Cooking times are guides. Use a food thermometer to confirm safe internal temperatures. For this converter in particular: Gas marks are approximate.
Related calculators
- Butter Conversion Calculator — Convert butter between sticks, tablespoons, cups, grams and ounces.
- Brine Concentration Calculator — Salt concentration of a brine by weight.
- Rice to Water Ratio Calculator — Water needed for rice at the ratio you prefer.
- Salt Percentage Calculator — Salt as a percentage of the total weight.
- Temperature Converter — Celsius, Fahrenheit, Kelvin and Rankine.
Sources
- UK gas mark table (1/4 = 225 °F / 110 °C … 9 = 475 °F / 240 °C)
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.