Cooking Measurement Converter
Convert recipe measures written as 1.5, 2/3 or ⅔ between US, metric and UK cups, spoons, fluid ounces, pints, litres and ml, or to grams for common ingredients.
US units are the default (1 cup = 236.6 ml). Metric (250 ml cup), Australian and UK imperial units are also selectable — note the Australian tablespoon is 20 ml, not 15. Pick a weight unit on either side and an ingredient appears, because a cup of flour and a cup of sugar do not weigh the same.
16US tablespoons (tbsp)
The same amount in other units
Pick a unit’s name to make it the “To” unit above.
| Unit | Amount | |
|---|---|---|
| 1 | ||
| 16 | ||
| 48 | ||
| 236.588236 | ||
| 0.236588 | ||
| 8 |
Cups, spoons and millilitres (US)
| Cups | Tablespoons | Teaspoons | ml |
|---|---|---|---|
| ⅛ | 2 | 6 | 29.6 |
| ¼ | 4 | 12 | 59.1 |
| ⅓ | 5⅓ | 16 | 78.9 |
| ½ | 8 | 24 | 118.3 |
| ⅔ | 10⅔ | 32 | 157.7 |
| ¾ | 12 | 36 | 177.4 |
| 1 | 16 | 48 | 236.6 |
Cups, spoons and millilitres, US and metric
This converter changes a cooking amount from one measurement into another across the units home cooks reach for most: US cups, tablespoons, teaspoons, millilitres, and fluid ounces, plus the international kitchen units — the 250 ml metric cup, the 15 ml metric tablespoon and 5 ml teaspoon, and the 20 ml Australian tablespoon — along with litres, US pints, quarts and gallons, and the UK imperial cup, tablespoon, teaspoon, fluid ounce, pint, quart and gallon. Type an amount the way the recipe writes it — 1.5, 2/3, 1 1/2 or ⅔ all work — pick the unit you are measuring from and the unit you want, and the result updates live as you type. Use the swap button to flip the two units in one tap — handy when you realise the recipe lists the opposite of what you have. It answers everyday kitchen questions like how many tablespoons are in a cup, how many teaspoons make up a tablespoon, or how many millilitres a fluid ounce holds, so you can scale a recipe without hunting for a chart — and the common cup measures are charted under the converter anyway. When an answer lands near a half, third, quarter or eighth, it is also written as the fraction a measuring set has, such as ≈ 10⅔ US tablespoons (tbsp) beside 10.666667, except in millilitres, litres, grams and kilograms. The answer names its unit beside the number, and “Copy with unit” copies the two together, while “Copy” keeps to the bare number for a spreadsheet.
How the conversion works
Every unit is first converted into a single base unit, millilitres, and then out to the unit you asked for. The tool uses the exact US customary definitions — cup = 236.5882365 ml, with the fluid ounce, tablespoon and teaspoon being precisely one eighth, one sixteenth and one forty-eighth of that (29.5735295625 ml, 14.78676478125 ml and 4.92892159375 ml), and ml = 1 — alongside the exact metric factors (metric cup = 250 ml, metric tbsp = 15 ml, metric tsp = 5 ml, Australian tbsp = 20 ml). Because everything passes through one base unit, converting A → B and back B → A returns your original number. Because those US factors are exact ratios of one another rather than separately rounded numbers, 1 US cup comes out to exactly 16 US tablespoons and 1 US tablespoon to exactly 3 US teaspoons. Values are shown to six decimal places.
Cups to grams, by ingredient
Weight is the other half of a kitchen conversion, and it is the half a volume-only chart cannot do: 250 g of flour is a little over two cups, while 250 g of sugar is a cup and a quarter. Pick grams, kilograms, ounces or pounds on either side and an ingredient list appears — all-purpose and whole wheat flour, granulated, brown and powdered sugar, butter, oil, honey, salt, rice, rolled oats, cocoa, milk and water — then almond flour, baking powder, baking soda, cornstarch, instant yeast, dried breadcrumbs, grated cheddar and Parmesan, cream cheese, yogurt, sour cream, heavy cream, chocolate chips, peanut butter and maple syrup, from King Arthur’s ingredient weight chart — and last “Something else — type what a cup of it weighs”, for the grams in one US cup that a packet or a recipe gives. Each carries a density: 120 g per cup for spooned-and-levelled all-purpose flour, 200 g for granulated sugar, 227 g for butter. Those are typical figures rather than exact ones — a cup of flour scooped straight from the bag can weigh nearer 145 g — so the page says so directly under the answer instead of presenting an approximation as a measurement. The ounce in the weight list is the avoirdupois ounce your scale shows, kept separate from the fluid ounce, which is a volume.
Frequently asked questions
How many grams is a cup of flour?
120 g for all-purpose flour spooned into the cup and levelled off — while a cup of granulated sugar is 200 g and a cup of butter is 227 g. That difference is why the converter asks which ingredient: choose grams, kilograms, ounces or pounds on either side and an ingredient list appears, running from flours, sugars, butter, oil and honey to baking powder, cheeses, cream and maple syrup, with “Something else” at the end for a cup weight you type yourself. The weights are typical rather than exact, because scooping a cup straight from the bag instead of spooning it in can add around 20% to the flour.
How many tablespoons are in a cup?
Exactly 16. The US tablespoon is defined as one sixteenth of a US cup, so the ratio is exact by definition rather than by rounding: a cup is 236.5882365 ml and a tablespoon 14.78676478125 ml. The "Cups, spoons and millilitres (US)" chart under the converter lists ⅛ to 1 cup in tablespoons, teaspoons and ml.
Why is the Australian tablespoon different?
The Australian tablespoon is 20 ml, not the 15 ml used almost everywhere else — so an Australian tablespoon is 4 metric teaspoons, not 3. Picking the wrong tablespoon is a classic cause of over-measured baking, which is why this converter lists it separately.
How many teaspoons are in a tablespoon?
Three. The US teaspoon is defined as one third of a US tablespoon — 4.92892159375 ml against 14.78676478125 ml — so it divides to exactly 3, with no rounding error left over.
Can I type ⅔ or 1½, and get a fraction back?
Yes. The amount box reads 2/3, 1 1/2, 1-1/2, ⅔ and 1½ as well as decimals. When an answer in cups, spoons, ounces or the other kitchen measures lands near a half, third, quarter or eighth, it is also written as that fraction — ⅔ cup in tablespoons comes out as 10.666667 with ≈ 10⅔ US tablespoons (tbsp) under it — but not in millilitres, litres, grams or kilograms.
Can I convert an ingredient that is not listed, or see every unit at once?
Yes. The last ingredient, “Something else — type what a cup of it weighs”, opens a “Grams in one US cup” box for the figure a packet or recipe gives, and every answer that crosses between volume and weight says the grams per US cup it used. Under the answer, “The same amount in other units” gives the amount in the everyday units at once — weights too, once an ingredient is in play — each row with its own Copy button; picking a unit's name makes it the “To” unit.
Does the answer say which unit it is in?
Yes. The unit’s name sits beside the number — “US tablespoons (tbsp)”, “Millilitres (ml)” — and “Copy with unit” copies the two together, while “Copy” still copies the bare number for a spreadsheet. When the answer crosses between volume and weight, the note that ingredient weights are typical rather than exact sits directly under it.