About Gas Mark to Celsius Converter
This converter turns a UK gas mark into degrees Celsius, or the other way round, using the standard oven table. It is free, needs no sign-up and runs in your browser, so nothing you enter is uploaded.
Some reference points: gas mark 3 is 170°C; gas mark 4 is 180°C; gas mark 6 is 200°C.
Recipes that give both a gas mark and a Celsius figure sometimes differ by a few degrees, because ovens vary and the published tables are rounded. Treat the result as the usual setting, not a calibration.
Gas mark 4 is 180°C, gas mark 6 is 200°C and gas mark 9 is 240°C. Gas marks are the dial settings on UK and Irish gas ovens, and they follow a published table rather than a formula, which this converter uses.
Many recipes written for a fan oven ask you to lower the temperature by about 20°C. This converter does not make that adjustment, so check what your recipe says.
How to use Gas Mark to Celsius Converter
- Choose a group such as Length or Temperature from the Quantity picker. It opens on a worked conversion.
- Type the value you want to convert in the From box. Decimals and negative numbers are fine.
- Pick the unit you have in the From list and the unit you want in the To list. The swap button reverses the pair.
- Read the result in the result card, and use the copy button to put it on your clipboard.
- Set Precision to Auto, or to a fixed number of decimals from 0 to 10, if you need a specific rounding.
- Check the formula line and the chart of common values under the result when you want to see how the number was reached.
Features
- 102 units in 15 groups, from nanometers and light-years to square miles, and from bits to tebibytes. It includes milligrams, UK gallons and pints, cubic meters, feet and inches, degrees and radians, hertz and rpm, and bits per second to MB/s.
- Results update as you type, with a swap button to reverse the pair.
- Precision control: Auto (up to 8 significant digits) or 0 to 10 fixed decimals.
- A copy button for the result.
- The formula and the factor in both directions, shown under the result.
- A chart of common values (1, 2, 5, 10, 20, 25, 50, 75, 100, 250, 500 and 1,000) for the pair you chose.
- Temperature handled with proper offset formulas, plus the UK gas mark oven table.
- Fuel economy handled as an inverse, so US and UK miles per gallon and liters per 100 km convert correctly.
- Bangladesh land units: decimal (shotangsho), katha and bigha.
- Both decimal data units (KB, MB, GB, TB) and binary ones (KiB, MiB, GiB, TiB), clearly labeled.
How gas marks convert
Gas marks are not a formula. They are dial settings on UK and Irish gas ovens, and the Celsius and Fahrenheit equivalents come from a published table, shown in the chart below.
Between two marks the converter interpolates in a straight line, so gas mark 4.5 lands halfway between marks 4 and 5.
Worked examples
gas mark 3 gives 170°C
gas mark 4 gives 180°C
gas mark 6 gives 200°C
Gas marks to degrees Celsius conversion chart
| Gas marks | Degrees Celsius (°C) |
|---|---|
| 0.25 | 110 |
| 0.5 | 120 |
| 1 | 140 |
| 2 | 150 |
| 3 | 170 |
| 4 | 180 |
| 5 | 190 |
| 6 | 200 |
| 7 | 220 |
| 8 | 230 |
| 9 | 240 |
Privacy: how it works
- Every conversion is calculated by code running in your browser tab. The values you type are never sent to Ulkaa or anyone else, and nothing is stored.
- There is no account and no sign-up for this tool, and it costs nothing to use.
Tips
- Use the swap button instead of retyping when you need the reverse conversion.
- For a quick mental check, round the factor: 1 inch is about 2.5 cm, 1 kg is about 2.2 lbs, 1 mile is about 1.6 km.
- Set Precision to 2 decimals for cooking, shopping and travel, and to 6 or more for engineering work.
- Check whether a figure uses US or imperial units before converting volumes, gallons and miles per gallon.
- For land, convert for a rough size, then confirm the area from the deed or survey record.
Frequently asked questions
Is it really free?
Yes. There is no price, no trial and no credit card. Ulkaa Tool does the work with your own device, so there is no server bill to pass on to you.
Do I need an account?
No. There is no sign-up and no login. Open the page and use it. An Ulkaa account is not needed for anything on this tool.
Does it run in my browser?
Yes. Your values are processed by code running in your browser tab, on your own device.
Is my data uploaded?
No. Your values are never sent to Ulkaa or to anyone else. You can check this yourself by watching the Network tab in your browser developer tools while you use the tool.
How do I convert Gas Mark to Celsius?
Look up the mark in the standard oven table. For example, gas mark 4 is 180°C. Use the chart on this page or type your value in the converter above.
How do I convert Celsius back to Gas Mark?
Swap the units in the converter. Between two marks it interpolates, so a value that is not on the table still gets an answer.
What are some common Gas Mark to Celsius values?
gas mark 3 is 170°C, gas mark 4 is 180°C, gas mark 6 is 200°C.
How are values between gas marks handled?
The converter draws a straight line between the two nearest marks in the table. That is a convenience, not an official figure, since ovens only have fixed settings.
What is gas mark 4 in Celsius?
Gas mark 4 is 180°C, or 356°F.
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