Recipe Scaler
Paste an ingredient list and get the amounts rewritten for your serving count; lines without a number are left untouched.
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Recipe Scaler: complete guide
Walk through the steps and examples, or jump straight to the topic you need.
At a glance
- What you enter
- The ingredient list. Paste one ingredient per line.
- Amounts it reads
- It reads the forms 3, 1.5, 1/2, ½, 2½, 2~3, and 3-4.
- What it changes
- Only the first number on each line. It doesn't touch ingredient names or units.
- Ranges
- On a line written like 2~3, it changes both numbers.
- How it writes
- It converts back to kitchen fractions like 1/2 instead of 0.5. Above 10, it leaves the value as is.
- What it doesn't touch
- Lines where it finds no number, blank lines, and baking times and temperatures.
- Limits
- 200 lines and up to 100 servings. Processing happens inside this browser.
How to use Recipe Scaler
Enter the original servings and the new servings
The servings written in the recipe are the original servings. You can raise or lower it one at a time with the buttons or type the number directly.
Paste the ingredient list
Copy only the ingredient part of the recipe and paste it in. Any symbols in front or notes after stay as they are.
Check the faded lines
These are lines where it found no number and didn't touch them. If it's a line that never had a number, such as a pinch of salt, you can leave it as is.
Copy and use it
Copy the changed ingredients as they are and use them when shopping or cooking. What you enter is not saved anywhere.
What it’s good for
It gives amounts back in the fractions used in the kitchen
If you scale 2 tablespoons down to a quarter, you get 0.5 tablespoon. But measuring spoons don't have a 0.5; they have a 1/2. So the results are written back in commonly used fractions such as 1/2, 1/3, and 3/4. Values above 10 are left as they are, because writing them as fractions wouldn't help.
Lines it can't read are not changed
A line like "a pinch of salt" or "to taste" has no number to change. Forcing a change on such a line would ruin the dish. This tool changes only the lines where it finds a number and leaves the rest exactly as written, and it shows faded text on screen to show which lines it did not touch.
Worked examples
From 2 servings to 4
200g sugar
2 tbsp soy sauce
2~3 green onions
A pinch of salt400g sugar
4 tbsp soy sauce
4~6 green onions
A pinch of saltFrom 4 servings to 1
2 tbsp soy sauce
200g sugar1/2 tbsp soy sauce
50g sugarHow results are written
Swipe the table sideways to see the rest.
| Calculated value | What it writes | Why |
|---|---|---|
| 0.5 | 1/2 | As written on measuring tools. |
| 1.5 | 1 1/2 | It shows right away that it means one and a half. |
| 133.33 | 133.3 | Above 10, fractions don't help. |
When the result isn’t what you expected
A line didn't change
It couldn't find a number on that line. An amount written only in words, such as a clove or to taste, can't be read. It is shown in faded text, so use your own judgment.
The wrong number changed
It treats the first number on a line as the amount. If an ingredient name contains a number (for example, 3-minute curry), that number may be changed. In that case, fix just that line yourself.
The seasoning isn't right
Salt and spices don't scale in direct proportion to servings. It is better to use the result as a starting point and adjust by tasting.
Key terms
- Servings
- How many people the amount is meant to feed.
- Range
- An amount written with some leeway, such as 2~3 stalks.
Recipe Scaler FAQ
Does it change the baking time too?
No. Making twice the batter doesn't mean baking twice as long. Time and temperature depend on the pan size and thickness, so this tool doesn't set them.
Does it multiply salt and spices as they are too?
It multiplies the numbers as written. However, seasoning and aroma don't always double correctly, so use the result as a starting point and adjust by tasting.
Can I enter a recipe's URL?
No. It doesn't fetch websites. Just copy and paste the ingredient list. What you enter stays only inside this browser.
Does it convert units?
It doesn't change them. g stays g and tablespoon stays tablespoon. For unit conversion, use a unit converter tool.
Can I enter a recipe's URL?
No. It doesn't fetch websites, so just paste the ingredient list.
Is what I enter saved?
It isn't saved. It disappears when you refresh and isn't kept anywhere.