Recipe Scaler
Scale an ingredient amount up or down for new servings.
Input sheet
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Halving a recipe for a quiet weeknight or tripling it for a crowd both come down to the same ratio. This scaler keeps every ingredient in proportion so the dish tastes the way the original cook intended, no matter how many you are feeding.
How it works
Multiplies each ingredient by desired servings ÷ original servings.
Scaling is pure proportion: each ingredient is multiplied by the same factor, found by dividing the servings you want by the servings the recipe was written for. A recipe for 4 scaled to 6 multiplies everything by 1.5.
The math is linear, but flavor is not. Salt, chili, garlic, and strong spices intensify faster than the bulk ingredients, so seasonings scaled straight up can overpower a larger batch. Scale them a touch under and adjust to taste at the end.
Scaled amount = original amount × (desired servings ÷ original servings)
Worked examples
A recipe calls for 2 cups of broth for 4 servings; you want 6. → 3 cups of broth (scale factor 1.5×)
2 × (6 ÷ 4) = 2 × 1.5 = 3 cups.
Scaling each ingredient of an 8-serving recipe down to a single serving. → Multiply every ingredient by the same 0.125 factor
1 ÷ 8 = 0.125, applied to every line so ratios hold.
Tips & gotchas
- Pan size does not scale linearly. Doubling a cake batter usually means a bigger pan or two pans, not the same pan filled deeper, or the center will not cook through.
- Scale seasonings, leaveners, and alcohol conservatively — taste and adjust at the end rather than trusting the raw multiplier.
- Cooking and baking times barely change when you scale ingredients; they change with depth and pan dimensions. Check doneness by temperature or feel, not the original clock.
- For awkward factors (like 1.5 eggs), round to the nearest whole egg and nudge the liquid to compensate.
FAQ
Does cooking time scale with the recipe?
Not directly. Time tracks how thick the food sits in the pan, not the total quantity. A double batch spread across two pans cooks in about the original time; piled into one pan it takes longer. Judge by internal temperature or visual cues.
Why shouldn't I scale spices straight up?
Strong flavors compound. Doubling cayenne or garlic often makes a batch noticeably hotter or sharper than the single version. Scale them to about 75–90% of the linear amount, then season to taste at the finish.
Can I scale a baking recipe the same way?
You can scale the ingredients proportionally, but baking is less forgiving — leavening, pan surface area, and bake time all shift. For best results, weigh ingredients and treat the scaled bake as a new recipe to test once.
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