Recipe Multiplier Calculator (Ingredient Converter, Cups to Grams)
Scaling a recipe by volume works fine for liquids and disastrously for flour, because a cup of flour can weigh anywhere from 120 to 150 grams depending on whether it was scooped or spooned. Converting to grams first removes that variance entirely, which is why every professional kitchen and every serious baking book works by weight.
Scaling above 2× usually needs a larger pan and a longer, slightly cooler bake — see the guidance below.
| Original | Scaled | In grams (this ingredient) | In tablespoons |
|---|---|---|---|
| ¼ cup | ⅝ | 78 | 10.0 |
| ½ cup | 1 ¼ | 156 | 20.0 |
| ¾ cup | 1 ⅞ | 234 | 30.0 |
| 1 cup | 2 ½ | 313 | 40.0 |
| 1 ½ cup | 3 ¾ | 469 | 60.0 |
| 2 cup | 5 | 625 | 80.0 |
| 3 cup | 7 ½ | 938 | 120.0 |
What does not scale linearly
Salt, spices, leavening and yeast should be scaled at roughly eighty to ninety percent of the mathematical factor when doubling or more, because their perceived intensity does not rise proportionally with volume. Baking soda and powder in particular can produce a soapy, metallic note when scaled straight up.
Pan size and bake time
Doubling a batter needs roughly double the pan area, not double the depth — a deeper batter bakes unevenly and the outside overcooks before the centre sets. If the depth must increase, drop the oven temperature by about fifteen degrees Celsius and extend the time by twenty-five to fifty percent, testing from the original time onward.
Cup weights vary by ingredient and technique
Spooned and levelled plain flour is about 125 g per cup; scooped straight from the bag it can reach 150 g, which is a twenty percent error in the ingredient that structures the entire bake. Brown sugar is measured packed, cocoa is sifted, and butter is best cut by weight rather than by stick markings.
Cup to gram conversions by ingredient
| Ingredient | 1 cup | ½ cup | 1 tbsp | Notes |
|---|---|---|---|---|
| Plain flour | 125 g | 63 g | 8 g | Spooned and levelled |
| Bread flour | 120 g | 60 g | 7.5 g | Higher protein |
| Granulated sugar | 200 g | 100 g | 12.5 g | — |
| Brown sugar | 220 g | 110 g | 13.8 g | Firmly packed |
| Butter | 227 g | 113 g | 14 g | 2 US sticks per cup |
| Water / milk | 240 g | 120 g | 15 g | 1 g per ml |
| Honey | 340 g | 170 g | 21 g | Weigh — very dense |
| Cocoa powder | 85 g | 43 g | 5.3 g | Sifted |
| Rolled oats | 95 g | 48 g | 6 g | Loosely filled |
People also ask
How do I scale a recipe for more servings?
Divide target servings by original servings to get a factor, multiply every ingredient weight by it, then reduce salt, spices and leavening to about eighty-five percent of the scaled amount when the factor exceeds two.
How many grams is a cup of flour?
About 125 g for plain flour spooned and levelled. Scooping directly from the bag compacts it to 145-150 g, which is enough to make a cake dry.
Do I need to change the baking time when doubling?
Only if the batter depth changes. Same depth in a larger pan bakes in almost the same time; a deeper batter needs a lower temperature and a longer bake.
Three worked examples
Same engine, three different starting points — useful if you want to see how sensitive the answer is before you type your own numbers in.
Example 1: original servings 3.12, ingredient to convert "Plain flour"
On the lower / more conservative end. Scaling above 2× usually needs a larger pan and a longer, slightly cooler bake — see the guidance below.
Example 2: original servings 4, ingredient to convert "Plain flour"
A typical middle-of-the-road setup. Scaling above 2× usually needs a larger pan and a longer, slightly cooler bake — see the guidance below.
Example 3: original servings 5.2, ingredient to convert "Bread flour"
On the higher / more demanding end. At this factor, keep the same pan depth and check for doneness a few minutes early.
Quick answers about the Recipe Scale & Unit Converter
What exactly does the Recipe Scale & Unit Converter work out?
Scaling a recipe by volume works fine for liquids and disastrously for flour, because a cup of flour can weigh anywhere from 120 to 150 grams depending on whether it was scooped or spooned. You enter original servings, target servings, ingredient to convert and amount in the original recipe and the result panel updates straight away, so you can compare two or three versions of the same question in a few seconds.
What do I need before I start?
Only 4 fields: original servings, target servings, ingredient to convert and amount in the original recipe. Nothing else is needed and nothing is stored.
What does not scale linearly?
Salt, spices, leavening and yeast should be scaled at roughly eighty to ninety percent of the mathematical factor when doubling or more, because their perceived intensity does not rise proportionally with volume. The same maths runs inside this page, so hand-checking the result on paper gives you the identical figure.
Why do two calculators give me different answers for recipe Scale & Unit?
Doubling a batter needs roughly double the pan area, not double the depth — a deeper batter bakes unevenly and the outside overcooks before the centre sets. Different sites pick different assumptions, so always check which method a calculator states before you trust the gap between two numbers.
What does the "Cup to gram conversions by ingredient" table on this page tell me?
It is the reference range this tool works against — 9 rows from "Plain flour" (125 g) up to "Rolled oats" (95 g). Use it to sanity-check whether the number you just calculated sits where you expected it to.
Which ingredient to convert should I pick?
The dropdown offers 9 choices — Plain flour, Bread flour, Granulated sugar, Brown sugar packed, Butter, Water / milk, Rolled oats, Rice uncooked and Cocoa powder. Pick the one that matches your real situation rather than the one you would like to be true; ingredient to convert usually moves the final figure more than any other single input, so it is worth running it twice with the option above and below your guess.
Do I have to press a button or reload the page to see the result?
No. Recipe Scale & Unit Converter runs completely inside your browser, so the moment you change a value the cards recalculate — there is no submit step, no page reload and no waiting for a server round trip. That also means it keeps working on a weak or intermittent mobile connection.
Is it free, and do you keep what I type?
It is free with no sign-up, no app install and no usage limit. Nothing you enter into Recipe Scale & Unit Converter leaves your device — the calculation is JavaScript running locally, so there is no upload of your figures to DrHint or anyone else.
Can I use it on a phone?
Yes — the layout stacks to a single column on small screens and the number fields open the numeric keypad on both Android and iOS. Many people bookmark this page or add it to their home screen and re-open it whenever the question comes up.
Anything to be careful about with the result?
Divide target servings by original servings to get a factor, multiply every ingredient weight by it, then reduce salt, spices and leavening to about eighty-five percent of the scaled amount when the factor exceeds two. Treat the output as a well-grounded estimate for planning, not as a professional, legal or medical decision on its own.
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