Your Recipe Says "1 Cup of Flour" But Your Scale Wants Grams — Here's the Actual Math
A cup of flour and a cup of honey take up the exact same space, but one weighs about 120 g and the other about 340 g. If you've ever wondered why "how many grams in a cup" gets a different answer every time you search it, here's what's actually going on — plus how to handle oven temperatures and scaling a recipe up or down.
Short answer: A cup or tablespoon measures volume, not weight. To get grams, you multiply the volume in milliliters by the ingredient's density: grams = volume (mL) × density (g/mL). A US cup is 240 mL, so the gram result always depends on what's filling that cup, not just the cup size.
This is the core idea behind ToolPico's Kitchen Measurement Converter: instead of one flat "1 cup = X grams" answer, it applies each ingredient's own density from a built-in list of 24+ common baking ingredients — flour, sugar, butter, rice, honey, cocoa powder, and more — so a cup of flour and a cup of honey come out correctly different. Pick the ingredient, choose the unit (cup, tablespoon, teaspoon, fluid ounce, pint, or quart) and enter the quantity — fractions like 1/2 or 1 1/4 work directly, no need to convert to decimal first — and it shows the gram and mL equivalent instantly, alongside ounces, with a Copy button to paste the result straight into a recipe. It also works in reverse: enter a gram, ounce, pound, or mL amount and it tells you back how many cups, tablespoons, or teaspoons that is.
Rule of thumb: 1 US tablespoon ≈ 14.8 mL, 1 US teaspoon ≈ 4.93 mL (3 teaspoons per tablespoon, 16 tablespoons per cup), and 1 fluid ounce ≈ 30 mL (2 tablespoons). These volume conversions never change — only the gram weight shifts by ingredient.
1 US cup (240 mL) of common ingredients, spooned & leveled (or measured full, for liquids)
Ingredient
Grams
All-purpose flour
120 g
Granulated sugar
200 g
Butter
227 g
White rice, uncooked
185 g
Honey
340 g
Cocoa powder
84 g
Example scenario: say a recipe lists "1 cup honey, 1/2 cup butter, 2 cups flour" and you want to weigh everything on a kitchen scale instead of dragging out measuring cups. Converting each one separately gives roughly 340 g honey, 113 g butter, and 240 g flour — three very different numbers from the same "1 cup" starting point, which is exactly why an ingredient-aware converter matters more than a single generic cups-to-grams rule.
Sifted vs. spooned & leveled vs. packed
Short answer: How you get a dry ingredient into the cup changes how much actually fits. Spooned & leveled (spoon it in, then level with a straight edge) is the standard baking reference. Sifted flour is aerated first, so roughly 9% less fits in the same cup. Packed/scooped — pressing the cup straight into the bag — packs in roughly 20% more.
This is exactly why a search for "how many grams in a cup of flour" turns up answers anywhere from about 109 g to 144 g — different sources are silently assuming a different measuring method. The converter's texture toggle (sifted / spooned & leveled / packed) applies to dry ingredients so the result matches how the ingredient was actually measured, rather than forcing one assumption on every recipe.
Why brown sugar is the exceptionMost dry ingredients default to spooned & leveled, but brown sugar is conventionally measured packed — which is why recipes specifically say "1 cup packed brown sugar" instead of leaving the method unstated.
Example scenario: two people bake the same cookie recipe. One sifts the flour first, the other scoops the measuring cup straight into the flour bag and packs it down. Even though both wrote down "2 cups flour," the sifter used roughly 218 g and the packer used roughly 288 g — a 70 g difference that can noticeably change how the dough turns out.
The US cup vs. the metric cup
Short answer: The US cup is 240 mL, but the "metric cup" used in UK, Australian, Canadian, and New Zealand recipes is 250 mL — about 4% larger. The tool's cup-size calibration setting (240 mL standard, 236.59 mL precise legal US cup, or 250 mL metric) lets you match whichever recipe you're converting from.
The tablespoon differs too: the US tablespoon is 14.8 mL, while the Australian tablespoon is 20 mL (equal to 4 teaspoons instead of 3) — so an Australian recipe's tablespoon measurements need their own adjustment, not just the cup-size setting.
Example scenario: a home baker in the US finds a cake recipe from an Australian food blog calling for "2 cups flour, 3 tablespoons cocoa." Switching the cup calibration to 250 mL handles the flour correctly, but the 3 tablespoons of cocoa should be read as Australian tablespoons (60 mL total) rather than US tablespoons (44.4 mL) — entering the amount in teaspoons instead sidesteps the ambiguity.
Oven temperatures and scaling a recipe
Short answer: 350°F is about 177°C (commonly rounded to 180°C) and corresponds to Gas Mark 4 — the most common US baking temperature. To scale a recipe, divide the target servings by the original servings to get a multiplier (6 ÷ 4 = 1.5) and apply it to every ingredient amount.
Beyond ingredient-to-gram conversion, the same tool includes an oven temperature converter (Fahrenheit, Celsius, and Gas Mark, with a note that fan/convection ovens typically run about 25°F/20°C cooler than a conventional oven for the same result) and a recipe scaler: paste a recipe with one ingredient per line, set the original and target servings, and it multiplies the leading number on every line while leaving units and ingredient names untouched.
Example scenario (illustrative): a recipe written for 4 servings calls for "2 cups flour, 1 cup sugar, 1/2 cup butter" and needs to feed 6 people instead. The 1.5× scaling factor gives 3 cups flour, 1.5 cups sugar, and 3/4 cup butter — the scaler handles this line-by-line instead of requiring separate mental math for every ingredient.
Skip the manual math — convert any ingredient to grams or mL, adjust for texture, check an oven temperature, or scale a whole recipe in one place.
It depends entirely on the ingredient, because a cup measures volume while grams measure weight. The formula is grams = volume in mL × density (g/mL). A US cup is 240 mL, so 1 cup of water (density 1.00) is 240 g, 1 cup of all-purpose flour (density 0.50) is about 120 g, and 1 cup of honey (density 1.42) is about 340 g.
How many grams of all-purpose flour are in a cup?
1 cup of all-purpose flour is about 120 g when spooned into the cup and leveled off, which is the standard baking measurement. Sifted flour is lighter, about 109 g, while flour that's scooped directly from the bag and packed down can weigh as much as 144 g. This is why recipes should specify the measuring method.
How many mL are in a tablespoon and a teaspoon?
1 US tablespoon is about 14.8 mL and 1 US teaspoon is about 4.93 mL. There are 3 teaspoons in a tablespoon, and 16 tablespoons in a cup. 1 fluid ounce equals 2 tablespoons, or about 30 mL.
Is a US cup the same as the metric cup used in UK, Australian, or New Zealand recipes?
No. The US cup is 240 mL, while the metric cup used in the UK, Australia, Canada, and New Zealand is 250 mL — about 4% larger. For a recipe written with the metric cup, switch the cup size calibration in Advanced settings to 250 mL so the conversions line up correctly.
How do I scale a recipe from 4 servings to 6?
Divide the target servings by the original servings to get the scaling factor: 6 ÷ 4 = 1.5, so every ingredient amount is multiplied by 1.5. A recipe scaler tool does this automatically for a pasted recipe — it updates the number at the start of every line while leaving the units and ingredient names untouched.
A note on the numbers: Gram values above are calculated from each ingredient's average density (g/mL) multiplied by the unit's volume, and are approximate. The real weight of the same ingredient varies with brand, moisture, grind, and how it was measured. The serving and ingredient amounts used in the scaling example are illustrative only. For precision baking, weigh ingredients on a kitchen scale; this article is general cooking guidance, not a substitute for a specific recipe's own instructions.