Last weekend I tried to bake a loaf of soda bread from an Irish recipe. It called for 200°C (fan), which my brain immediately blanks on. I know 350°F is sort of "medium," and 400°F is "hot," but 200? That’s not even on my oven dial. I ended up guessing, setting it to 390°F, and the bread came out with a crust like a hockey puck. Edible, but not what I was aiming for.
That’s a small thing, but it’s also the kind of friction that makes you hesitate before using a recipe from another country. And it happens all the time—British baking books, French pastry blogs, Australian casserole sites. They all use Celsius, and some still use gas marks. I don’t want to open a separate tab and search "200 C to F" every time, especially when the results are full of ads or show a single conversion without gas mark options.
You can, and it works okay for a quick number. But if you're like me, you’ve also run into the problem of "fan" vs "conventional" ovens, or you’re following a recipe that lists gas mark 6 and you have to do a second lookup. And the Google result doesn’t show you the equivalent gas mark unless you scroll. It’s not hard, but it’s a little annoying when you’re mid-recipe with flour on your hands.
There are plenty of converter widgets out there, but a lot of them are either buried in blog posts, require JavaScript to load, or show you a table that’s too small to read on a phone. I wanted something stripped down: you put in a temperature, it shows you all three formats at once. No extra clicks, no ads for air fryers, just the numbers.
It’s a single input where you type a number (or pick from common baking temps), and it instantly shows you the Fahrenheit, Celsius (both conventional and fan-assisted), and gas mark. If you enter, say, 350°F, it tells you that’s about 175°C conventional or 155°C fan, and gas mark 4. If you put in 200°C, you get 400°F and gas mark 6. It also has a small set of common presets for things like "slow oven" or "hot oven" so you don’t even need to type if you’re just checking a rough range.
It’s designed to be usable on a phone while you’re holding a spatula, and it works without any fancy loading or trackers. No login, no email required—just the conversion.
I built this for myself, but I figure if you’ve ever stared at a recipe that said "Gas Mark 7" and wondered whether that was hotter than a regular hot oven, you might find it useful too. It’s not a revolutionary thing—it’s just one less small headache when you’re trying to cook something from a different country.
No fake urgency. No "limited time" anything. If you cook, you might find this handy. If not, the bread recipe didn’t work out, but at least the tools we make here are free and straightforward. — ToolsForUse