Baking Conversion Calculator
Convert cups to grams for common baking ingredients.
Results update as you type.
How it works
Baking rewards precision, and this baking conversion calculator turns cup measurements into grams and grams back into cups using the correct density for each ingredient. Cups measure volume while grams measure weight, and because a cup of flour weighs far less than a cup of sugar or butter, a single conversion number will not do — the tool applies the right grams-per-cup figure for flour, sugar, butter, or water automatically. This accuracy matters because baking is closer to chemistry than freestyle cooking. A cup of flour can vary by a third depending on how it is scooped and packed, and that difference is enough to leave a cake dry or a dough slack. Weighing ingredients in grams removes that ambiguity, so a baking conversion calculator lets you follow a metric recipe with cup-only measuring tools, or bring a favourite cup recipe onto a kitchen scale for repeatable results every time. The conversion works because density is the ratio of mass to volume, and it is fixed for each ingredient. Flour sits near 120 grams per cup, granulated sugar around 200, butter about 227, and water roughly 236. Multiplying cups by that density yields grams, and dividing grams by it returns cups. Bakers, recipe writers, and anyone juggling metric and imperial recipes rely on a baking conversion calculator to swap units without second-guessing.
grams = cups × density · cups = grams ÷ density
A cup is a fixed volume, but each ingredient has a different mass packed into that volume, so conversion depends on density. Multiplying cups by an ingredient's grams-per-cup density gives its weight, while dividing grams by the same density recovers the volume. The approach works because density is the mass-to-volume ratio, and it differs for flour, sugar, butter, and water, which is why one blanket factor cannot serve them all.
Source:Standard cooking conversions
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter ingredient, amount, from unit and to unit.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
Converted amount updates instantly as you type — no button to press.
Frequently asked questions
Why can't I use one conversion for every ingredient?
Because a cup measures volume, not weight, and different ingredients pack different amounts of mass into the same cup. A cup of flour weighs about 120 grams, but a cup of granulated sugar weighs roughly 200 grams and a cup of butter about 227. Using a single number would throw off any recipe. This calculator stores a separate density for each ingredient so the conversion reflects what you are actually measuring.
Which ingredients does the calculator support?
It covers four common baking staples: flour at about 120 grams per cup, granulated sugar at 200, butter at 227, and water at 236 grams per cup. These densities match widely used baking references. If your ingredient is not listed, pick the closest match by texture — most all-purpose and bread flours sit near the flour figure, while syrups and milk behave much like water in weight per cup.
How accurate are cup-to-gram conversions?
The gram figures are reliable, but the real variability lives in how you fill a cup. Scooping flour straight from the bag compacts it and can add up to a third more weight than the standard density assumes. For the most consistent results, spoon flour lightly into the cup and level it off, or better still weigh directly in grams. The calculator uses standard densities that suit properly measured cups.
Can I convert grams back into cups?
Yes. Set the from-unit to grams and the to-unit to cups, and the calculator divides your gram amount by the ingredient's density to return the equivalent volume. This is useful when a recipe lists weights but you only own measuring cups. Keep in mind that fractional cup results, like 0.75 cups, are easiest to measure with a set of graduated cups or by converting to tablespoons where needed.
Does the same weight of flour and sugar fill the same volume?
No. Because sugar is denser than flour, 200 grams of sugar occupies about one cup while 200 grams of flour fills closer to one and two-thirds cups. This is exactly why weight-based baking is more dependable than volume-based baking. Whenever a recipe matters, converting everything to grams with this tool removes the guesswork that comes from swapping ingredients of different densities cup for cup.