Recipe Scaler
Tell it how many servings you have and how many you need, and it rescales every ingredient for you.
Scaling factor
× 1.5
Going from 4 to 6 servings multiplies every amount by 1.5.
Scaled ingredients
- 300 flour
- 3 eggs
- 2.25 sugar
- 0.75 salt
How it works
Scaling a recipe is really just one ratio applied to everything. If a dish serves 4 and you want to feed 6, that's a factor of 1.5 — so every amount gets multiplied by 1.5.
Paste your ingredients one per line with the amount first, like "200 flour" or "1.5 cups sugar". The scaler grabs the number at the start of each line, multiplies it, and leaves the rest of the text untouched.
It won't round to tidy fractions for you, so you'll sometimes see amounts like 1.33 eggs. Use your judgment there — round to a whole egg and nudge the other amounts if you like.
Frequently asked questions
What if a line doesn't start with a number?
It's left exactly as you typed it. Notes like "salt to taste" pass straight through, so you can mix measured and unmeasured ingredients in the same list.
Can I scale a single amount instead of a whole list?
Absolutely — just put one line in the box. Enter "200 flour" with the servings you're going from and to, and you'll get that one amount rescaled.
Does doubling a recipe always work?
For most things, yes. Baking is the exception: leavening, salt, and baking time don't always scale in a straight line, so taste and check as you go when you push a recipe far from its original size.