One US customary cup equals exactly 236.5882365 milliliters, the conversion factor that anchors every cup-to-mL calculation in a properly built kitchen converter. Converting baking measurements to grams covers three independent jobs: weight-to-weight (ounces, pounds, kilograms to grams), volume-to-volume (cups, tablespoons, teaspoons, fluid ounces, pints, quarts, gallons, milliliters, liters), and oven temperature (°C, °F, UK gas mark). For accurate baking, weight conversions matter most because a kitchen scale measures grams directly — no guesswork from how tightly flour was spooned or whether brown sugar was packed firmly. A 250 g bag of flour on a scale means exactly 250 g, while the same flour scooped into a US cup can vary by tens of grams depending on technique. The Cooking Measurement Converter handles each of these three categories using exact, published factors, not rounded kitchen approximations, so your numbers remain precise whether you're halving a cookie recipe or scaling a layer cake up for a crowd. Because every calculation runs locally in your browser, no values are uploaded or tracked, and the page keeps working even once you go offline.
What converting baking measurements to grams actually means
"Converting baking measurements to grams" splits into two distinct tasks depending on the unit you start with. If a recipe lists 200 g of flour and you want ounces, that's a direct weight-to-weight conversion and a single factor produces an exact answer. If the recipe lists 1 cup of flour and you want grams, that's a volume-to-weight conversion, and the answer depends entirely on how densely the flour settles into the cup — a figure that varies by flour type, humidity, and how vigorously the baker scooped. Most modern bakers therefore prefer grams for dry ingredients, which is why so many recipe sites now publish weights alongside volumes. The Cooking Measurement Converter gives you every conversion inside each category — volume to volume, weight to weight, temperature to temperature — using exact factors rather than rough kitchen estimates, so the answer you paste into your notes is the one the recipe actually intended.
Run a baking conversion through the tool
The interface is built around four clicks so you can convert while your hands are floury. Follow these steps for any conversion the tool supports.
- Choose a conversion type at the top of the tool: Volume, Weight, or Temperature. Pick the category that matches the unit you are converting from. The tool will not combine categories because that would require ingredient-specific density data.
- Type the amount you want to convert into the Amount box. For example, type 2 to convert two cups, or type 350 to convert 350 °F.
- Pick the unit you are converting From in the first dropdown and the unit you are converting To in the second. Use the swap button next to the dropdowns to instantly reverse direction if you typed the wrong way.
- Read the converted value that appears below, then click Copy result to put the number on your clipboard for pasting into a recipe card, shopping list, or notes app.
Volume entries use US customary units by default, which means a "cup" inside the tool is the 236.588 mL American cup, not the 250 mL metric cup or the 284 mL UK imperial cup. If a recipe was written for a metric or British kitchen and uses a different cup, factor the difference in separately — the on-screen label reminds you which cup is active so you never have to guess.
Why the tool will not turn cups directly into grams
Volume and weight measure different things. A cup is a unit of space — about 236.588 mL — while a gram is a unit of mass. The link between them is density, and density changes by ingredient: one cup of water weighs about 236 g, one cup of granulated sugar is roughly 200 g, one cup of all-purpose flour is roughly 125 g, one cup of honey is around 340 g, and one cup of melted butter sits near 227 g. Any calculator that claims one cup always equals the same number of grams is wrong for almost every baking ingredient, because the answer is density, not a secret constant.
To stay trustworthy, the converter deliberately does not cross between volume and weight. It converts cups to milliliters, tablespoons to teaspoons, ounces to grams, and pounds to kilograms — but it will not give you "X grams per cup of flour" because there is no single correct number. For ingredient-specific cup-to-gram conversions, look up the ingredient's density and multiply the cup volume in milliliters by grams per milliliter. The honest cup-to-grams guide lists common baking ingredients with their actual gram-per-cup values so you don't have to guess at the flour tin.
Exact factors the converter uses
The conversion factors below are baked into the tool's JavaScript. They come from the exact US fluid ounce definition and the 1959 International Yard and Pound Agreement, not from rounded kitchen estimates, so the numbers stay precise when you scale a recipe up or down or convert a metric baking blog for an American kitchen.
| Category | Unit | Exact equivalent |
|---|---|---|
| Volume | 1 US teaspoon | 4.9289215938 mL |
| Volume | 1 US tablespoon | 14.78676478125 mL |
| Volume | 1 US fluid ounce | 29.5735295625 mL |
| Volume | 1 US cup | 236.5882365 mL |
| Volume | 1 US pint | 473.176473 mL |
| Volume | 1 US quart | 946.352946 mL |
| Volume | 1 US gallon | 3785.411784 mL |
| Volume | 1 liter | 1000 mL |
| Weight | 1 ounce (avoirdupois) | 28.349523125 g |
| Weight | 1 pound (avoirdupois) | 453.59237 g |
| Weight | 1 kilogram | 1000 g |
| Temperature | °C to °F | °F = °C × 9/5 + 32 |
| Temperature | °F to °C | °C = (°F − 32) × 5/9 |
The fluid ounce definition that drives the volume rows is documented on the US fluid ounce reference page, and the pound-to-gram ratio that anchors the weight rows comes from the international agreement covered on the international ounce reference page. Because the tool uses these definitions verbatim, a recipe that calls for 250 g of butter converts to roughly 8.82 oz (250 ÷ 28.349523125 = 8.81849...) rather than the rounded 8.8 oz a less careful converter might return.
Setting the oven when the recipe lists gas mark, °C, or °F
British recipes use gas marks instead of °C or °F, and gas mark is a discrete scale, not a continuous temperature. The chart starts at gas mark 1, which equals about 140 °C, and climbs roughly 14 °C per mark up to gas mark 9 at about 240 °C. Because the scale is discrete, the converter snaps to the nearest chart mark rather than reporting a fractional value: converting 180 °C returns gas mark 4 (the closest chart step), and converting gas mark 6 back to °C returns 200 °C.
For ordinary Celsius-to-Fahrenheit conversions, the formula °C × 9/5 + 32 is exact and reversible. A few common oven settings worth remembering: 160 °C is 320 °F, 180 °C is 356 °F, 200 °C is 392 °F, and 220 °C is 428 °F. If your oven dial only shows gas marks and the recipe says 180 °C, set gas mark 4 and check the bake a few minutes sooner the first time you run that recipe.
Conversion pitfalls that throw off baking results
A few traps catch even experienced bakers when they convert between measurement systems. First, never assume a "cup" without checking which cup the recipe was written for: US customary cups (236.6 mL), UK imperial cups (284.1 mL), and metric cups (250 mL) differ enough to throw off a delicate cake or a custard that needs an exact water-to-yolk ratio. The tool's on-screen label tells you which cup is active, so glance at it before trusting a result.
Second, distinguish fluid ounces from weight ounces. A US fluid ounce is a measure of volume (29.5735 mL), while a weight ounce is 28.3495 g. The converter routes them through separate categories so they never collide: fluid ounces live in the Volume section, weight ounces live in the Weight section, and the interface makes the distinction visible.
Third, weigh ingredients for accuracy whenever a recipe gives both volume and weight. A cup of flour can weigh anywhere from about 110 g to 150 g depending on how it was measured, but 125 g of flour on a scale always means 125 g of flour. That is why professional bakeries and an increasing number of recipe developers have moved to grams as the primary unit.
Fourth, remember that scaling a recipe by a factor changes every ingredient by that factor but does not change oven temperature, pan size, or baking time in a simple way. A doubled cake needs a larger pan and a slightly lower temperature, not just a conversion of every line on the ingredient list. Convert each line with the tool, then adjust the bake itself based on the new volume of batter.
For a deeper look, see Calculate Macros for Muscle Gain: Daily Gram Targets.