Cooking & Baking calculator
Scale an ingredient list, plan purchase packs, split a batch and compare recipe costs per serving.
Going from 4 to 10 servings gives a scale factor of 10 ÷ 4 = 2.5. The 500 g of flour becomes 1,250 g, so two 1 kg bags are needed; 300 ml of milk becomes 750 ml, one 1 L carton. Paying only for what is used costs 2.775 in total, 0.277 per serving, while buying whole packs costs 4.2.
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Every calculation option
Keep each ingredient quantity and its pack size in the same unit. Pack prices use one currency.
Scale one ingredient or a known batch amount.
Divide a known finished quantity into equal portions.
Use this when you already know the total recipe cost.
Use the flour quantity in your chosen bread formula, not the dough weight.
Plan dough across a batch using your chosen raw dough weight per loaf.
Going from 4 to 10 servings gives a scale factor of 10 ÷ 4 = 2.5. The 500 g of flour becomes 1,250 g, so two 1 kg bags are needed; 300 ml of milk becomes 750 ml, one 1 L carton. Paying only for what is used costs 2.775 in total, 0.277 per serving, while buying whole packs costs 4.2.
| Input | Value |
|---|---|
| Original servings | 4 |
| Target servings | 10 |
| Ingredient list | Ingredient Flour, Unit g, Original quantity 500, Pack quantity 1,000, Pack price 1.5 · Ingredient Milk, Unit ml, Original quantity 300, Pack quantity 1,000, Pack price 1.2 |
| Result | Value |
|---|---|
| Scale factor | 2.5 |
| Flour · Scaled quantity | 1,250 g |
| Flour · Packs to buy | 2 |
| Flour · Purchase quantity | 2,000 g |
| Milk · Scaled quantity | 750 ml |
| Milk · Packs to buy | 1 |
| Milk · Purchase quantity | 1,000 ml |
| Ingredient cost used | 2.775 |
| Whole-pack purchase cost | 4.2 |
| Cost per serving | 0.277 |
Divide the servings you need by the original servings. Scaling four servings to ten gives 10 ÷ 4 = 2.5. Multiply each ingredient by 2.5 in its own unit. The pack calculation then rounds purchases up separately; it does not round the ingredient quantities.
You may use only part of the last package. The calculator separates the cost of the quantity used from the cost of buying complete packs. Check existing cupboard stock before ordering, and keep ingredient quantities and pack sizes in the same unit.
No. The scale factor changes ingredient quantities and the purchasing plan. Cooking time depends on pan depth, batch size and the appliance. Preserve the recipe's checks for doneness, and test salt, spices and raising agents when making a much larger batch.
Calculation/content reviewed 4 October 2026. Source: Babushka Market’s displayed formulas, units and labelled editable assumptions. How the estimates work
