Cooking Conversion Calculator
Kitchen volumes, and weight only when you give a density.
Kitchen volumes, and weight only when you give a density.
Water 1.0, flour ~0.53, sugar ~0.85, honey ~1.42. Leave at zero to skip the weight.
Millilitres
236.588
1 US cups
A US cup is exactly 16 tablespoons, 48 teaspoons and 8 fluid ounces — those relationships are definitional and exact. Converting volume to weight is not: a cup of flour and a cup of honey differ by nearly threefold, which is why this asks for a density rather than assuming water. That assumption is what makes most online conversions wrong for everything except water. Cup sizes also differ by country — the US cup is 236.6 mL, the metric cup 250 mL, and older British recipes may mean something else again.
How the Cooking Conversion Calculator works
A US cup is exactly 16 tablespoons, 48 teaspoons and 8 fluid ounces — those relationships are definitional. Converting volume to weight is not: a cup of flour and a cup of honey differ by nearly threefold, which is why this asks for a density rather than assuming water.
Also known as: cups to ml converter · tablespoons to teaspoons · cups to grams converter · recipe converter
What is exact and what is not
Within the US customary system the volume relationships are definitional: a cup is exactly 16 tablespoons, 48 teaspoons and 8 fluid ounces, and 236.5882365 millilitres.
Across systems they are not. A metric cup is 250 ml, an Australian tablespoon is 20 ml rather than 15, making it four teaspoons rather than three, and older British recipes may mean something else again.
Why volume to weight needs a density
A cup of water weighs 237 g, a cup of flour about 125 g, and a cup of honey about 336 g. They are the same volume and nearly threefold apart in weight.
So any converter that turns cups into grams without asking what the ingredient is has silently assumed water, and is wrong for everything else. This page asks instead.
Flour is the worst case even against itself: scooped flour can be 20% heavier than spooned flour of the same nominal volume, because it compacts. That variability is the real argument for baking by weight rather than by volume.
Where to go next
The Cooking Conversion question rarely arrives on its own. These are the ones that usually come with it:
- Percentage Calculator — Every common percentage question in one place.
- Age Calculator — Exact age in years, months, days, and total units.
- Z-Score Calculator — Standard deviations from the mean, and the percentile that follows.
- Confidence Interval Calculator — The range around an estimate, for a mean or a proportion.
Frequently asked questions
How many ml is a cup?
236.59 for a US cup. A metric cup is 250 ml, and older British recipes may mean something different again — so the origin of a recipe matters.
How many grams is a cup of flour?
About 125 g, but it genuinely varies with how the flour is packed — scooped flour can be 20% heavier than spooned. This is why baking by weight is more reliable than by volume.
Why do I need a density to convert to grams?
Because volume and weight are different quantities. Water is 1 g/ml, flour about 0.53, honey about 1.42 — a cup of each weighs very differently, and any converter that ignores this is right only for water.
How many tablespoons are in a cup?
Exactly 16 in the US system, and 48 teaspoons. Australian tablespoons are 20 ml rather than 15, which makes them four teaspoons rather than three.
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