Recipe Scaler
Enter a recipe's ingredients and its original serving count, then a target serving count, to scale every quantity automatically.
Scaled ingredients
Only the leading quantity of each line is scaled — units and ingredient names are left as-is.
How to scale a recipe
Enter a recipe's ingredients with their original serving count, then a target serving count, to scale every quantity automatically.
How scaling works
Only the number at the start of each line is scaled — the unit and ingredient name are left exactly as typed. Lines with no leading number, like a section heading, pass through unchanged.
Tips for best results
- Put one ingredient per line, with its quantity first.
- Both comma and dot decimals are supported and preserved in the output.
Worked example
Scaling a 4-serving recipe to 8 servings doubles every quantity: 200g flour becomes 400g, and 1.5 cups sugar becomes 3 cups.
Calculation notes
All math runs in your browser; nothing you enter is sent anywhere.
FAQ
Does it understand fractions like 1/2?
Not yet — enter quantities as decimals (0.5 instead of 1/2) for them to scale correctly.
What happens to a line with no quantity?
It's left unchanged, which is useful for section headings like "For the sauce:".
Can I scale down as well as up?
Yes — enter a target serving count lower than the original to scale every quantity down proportionally.