Recipe Converter
Built by Johnny Alto · free, no sign-up · published July 23, 2026
Scale any recipe up or down. Enter what the recipe makes and what you want it to make to get the exact multiplier, then type in any ingredient amount to see the converted quantity. It takes the mental math out of doubling a recipe or cutting it in half.
Multiply everything by0the scaling factor
Scale liquids, flour, sugar, and produce straight by the factor. Go easy scaling salt, spices, leavening (baking soda/powder), and yeast, though. Taste and add, since these do not scale linearly and a fully-multiplied amount is often too much.
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How to scale a recipe
Scaling a recipe is just multiplication. Divide the servings you want by the servings the recipe makes to get a scaling factor, then multiply every ingredient by it. Doubling is a factor of 2, halving is 0.5, and going from a recipe that serves 4 to one that serves 10 is a factor of 2.5. This converter finds the factor and applies it to any amount you enter.
Keep your units consistent when you multiply. If a scaled amount gets awkward, convert it: 3 teaspoons make a tablespoon, 16 tablespoons make a cup, and 2 cups make a pint.
What does not scale cleanly
Most ingredients scale straight, but a few do not. Salt, spices, and strong flavorings often overpower a big batch if fully multiplied, so scale them partway and adjust to taste. Leavening agents like baking soda, baking powder, and yeast are chemical, not linear, and large batches usually need proportionally less. Cooking times and pan sizes change too, so a doubled cake is not simply baked twice as long.
Frequently asked questions
How do I scale a recipe?
Divide the servings you want by the servings the recipe makes, then multiply every ingredient by that factor. Serving 10 from a recipe for 4 is a factor of 2.5.
How do I double or halve a recipe?
Doubling multiplies every ingredient by 2; halving multiplies by 0.5. Enter the servings both ways and the converter gives you the factor and the scaled amounts.
Do spices and salt scale the same?
Not really. Salt, spices, and leavening do not scale linearly, so add them partway and taste. A fully multiplied amount is often too much in a large batch.
Does baking time change when I scale a recipe?
Yes. A bigger batch usually needs a bigger or extra pan, and bake time changes with pan size and depth, so watch for doneness rather than just multiplying the time.
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This tool gives estimates for planning only. Confirm important decisions against your own measurements, product instructions, and relevant professional guidance. Some links are to our buying guides, which contain affiliate links. As an Amazon Associate I earn from qualifying purchases.
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