Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Result
Conventional oven (°C)
177
Fan / convection (°C)
157
Fan / convection (°F)
325
Gas mark
5.0
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter recipe temperature in °f (°F).
- 2Read your conventional oven (°c) on the right — it updates as you type.
- 3Hit Share to keep the scenario or send it to someone.
About this calculator
Fan (convection) ovens run hotter than the dial suggests, so recipes written for conventional ovens need roughly a 20 °C / 25 °F reduction to avoid over-browning.
Worked example
Using the values the calculator loads with:
Inputs
- Recipe temperature in °F: 350 °F
Results
- Conventional oven (°C): 177
- Fan / convection (°C): 157
- Fan / convection (°F): 325
- Gas mark: 5
What each field means
Inputs
- Recipe temperature in °F (°F)
- The recipe temperature in °f used in the calculation, measured in °F. Starts at 350 °F so you have a working example on load.
Results
- Conventional oven (°C)
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Fan / convection (°C)
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Fan / convection (°F)
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Gas mark
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the oven temperature converter (°f, °c, gas mark) work?
Fan (convection) ovens run hotter than the dial suggests, so recipes written for conventional ovens need roughly a 20 °C / 25 °F reduction to avoid over-browning. The underlying maths is: °C = (°F − 32) × 5/9; fan setting = conventional °C − 20; gas mark ≈ (°F − 250) ÷ 25 + 1
What do I need to enter?
Just one value: recipe temperature in °f. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the conventional oven (°c) result mean?
It is returned as a decimal number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Who is this tool for?
It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Oven Temperature Converter. Retrieved from https://www.revenuelab.fyi/toolbox/oven-temperature
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/oven-temperature" target="_blank" rel="noopener">Oven Temperature Converter — RevenueLab</a> (2026).</p>
Source: [Oven Temperature Converter — RevenueLab](https://www.revenuelab.fyi/toolbox/oven-temperature) (2026).