About This Tool
Your recipe serves 4 but you need 7 portions? Or you found a recipe for 12 and you're cooking for 2? This calculator rescales every ingredient instantly — no mental math, no mistakes.
Just enter your original ingredients and serving count, set the new serving size, and every amount updates in real time. The tool shows kitchen-friendly fractions (½, ⅓, ¼) instead of awkward decimals, so you can actually measure what it says.
Whether you're doubling a cookie recipe, halving a soup for two, or scaling a party dish from 8 to 35 — this is the fastest way to get accurate ingredient amounts without a single calculation.
How to Use
1. Set the original number of servings your recipe makes
2. Add ingredients: enter a name, amount, and unit for each
3. Use a preset recipe to get started quickly, or add your own from scratch
4. Change the "Scale to" number — all amounts update instantly
5. Use the quick buttons (½×, 2×, 3×) or type any number
6. Copy the scaled recipe or share it via link
Formula
Scaled amount = Original amount × (New servings ÷ Original servings)
Scale factor = New servings ÷ Original servings
Example: Recipe for 4, scaling to 6
Scale factor = 6 ÷ 4 = 1.5
2 cups flour → 2 × 1.5 = 3 cups flour
3 eggs → 3 × 1.5 = 4.5 → 4½ eggs