hobby calculator
Scale ingredient quantities up or down by any portion or multiplier.
Quick actions: Save inputs, view saved runs, print, share, or export results
Scale Multiplier
2x
Scaled Ingredients
Save this page to resize family meals, catering batches, and baking formulas without proportion errors.
Formula
Scaled quantity = Original quantity × MultiplierA multiplier > 1 scales the recipe up, while a multiplier < 1 scales it down.
Step by step
Related guides
Guide
Learn how recipe scaling works, how the calculator multiplies quantities, and when to round ingredients for cooking, baking, and batch prep.
Site Guide
Learn the fastest reliable workflow for using Do The Calculation calculators, reading results, checking formulas, and using save, print, share, and export actions correctly.
Summary
Scale Factor
2x
Scaling up
Ingredients
4
Items in recipe list
Total Scaled Qty
1104
Original: 552
D3 visualization
Shows the scaled quantity for each ingredient after applying the multiplier.
Guide
A recipe is a system of ratios. Flour, liquid, fat, sugar, salt, and leavening are not random numbers; they are balanced against one another to create texture, flavor, and structure. Scaling a recipe means multiplying every ingredient by the same factor so the original relationships remain intact.
The basic formula is simple:
$$\text{Scaled Quantity} = \text{Original Quantity} \times \text{Multiplier}$$
If the original recipe serves 4 and you want to serve 10, the multiplier is 10 / 4 = 2.5. Every ingredient is then multiplied by 2.5. If you want half the recipe, the multiplier is 0.5.
Savory cooking often tolerates approximation, but baking is chemistry. Leavening agents, hydration ratios, and egg counts can become awkward under scaling because some ingredients do not scale neatly into whole kitchen units. This is why a recipe scaler is especially useful: it makes the raw math explicit before you decide whether to round or substitute. For those interested in fermented cooking or home beverage crafting, you can also check our Homebrew ABV & Priming Sugar Calculator to compute exact gravity and carbonation details.
Not every scaled amount should be rounded the same way. Dry ingredients measured by weight can usually be scaled precisely. Whole eggs may need partial-beating or substitution rules. Small spices can be rounded to taste, but structural ingredients should be kept accurate. A good recipe-scaling workflow therefore starts with exact math and only then applies culinary judgment.
Multiplier
The ratio used to resize every ingredient in a recipe.
Hydration ratio
The relationship between liquid and dry ingredients, especially important in baking.
Weight-based cooking
Using measured weight rather than volume for more precise scaling.