Cooking Conversion Calculator (cups, tbsp, tsp, grams, oz)

Convert cooking measurements between cups, tablespoons, teaspoons, fluid ounces, millilitres, grams, and ounces — with ingredient-aware volume-to-weight.

Result

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How to use this calculator

Enter the amount and choose the unit you are converting from.
Choose the unit you want the result in.
If converting between a volume unit and a weight unit, pick the ingredient so the right density is used.
Read the converted value; the steps show the exact factors applied.

About this calculator

This calculator converts between every common cooking measurement: the US volume units (cups, tablespoons, teaspoons, fluid ounces), metric volume (millilitres, litres), and weight (grams, ounces, pounds). Volume-to-volume conversions are exact and ingredient-independent — a cup is always 16 tablespoons or 48 teaspoons or 236.59 millilitres. Converting between volume and weight, however, depends on what you are measuring: a cup of flour and a cup of honey weigh very different amounts. For those conversions the tool uses published ingredient densities from King Arthur Baking, where one cup of all-purpose flour is 120 grams, granulated sugar is 198 grams, and so on. Choose the ingredient and the calculator applies the right density. For the most reliable baking results, weigh dry ingredients rather than measuring them by volume, since scooped flour can pack 20% heavier than spooned flour.

How it works — the formula

Volume↔volume: result = amount × mL(from) ÷ mL(to)
Weight↔weight: result = amount × g(from) ÷ g(to)
Volume→weight: grams = mL × density(ingredient)
Weight→volume: mL = grams ÷ density(ingredient)

All volumes reduce to millilitres and all weights to grams. Crossing between the two requires the ingredient's density, taken from standard cup-weight references.

Sources: King Arthur Baking — Ingredient Weight Chart · NIST — US customary volume units

Worked examples

Example 1

1 cup to tablespoons

Inputs:: amount=1, from=cup, to=tbsp
Output:: 236.588 ÷ 14.787 = 16 tbsp

Example 2

1 cup all-purpose flour to grams

Inputs:: amount=1, from=cup, to=g, ingredient=flour
Output:: 236.588 mL × 0.5072 = 120 g

Example 3

250 g granulated sugar to cups

Inputs:: amount=250, from=g, to=cup, ingredient=sugar
Output:: 250 ÷ 0.8369 ÷ 236.588 = 1.26 cups

Limitations

Volume↔weight assumes standard ingredient densities; packing and humidity vary results.
Uses the US cup (236.59 mL), not the 250 mL metric cup or UK cup.
Ingredient list covers common staples; exotic ingredients may differ.

For precise baking, weigh ingredients on a kitchen scale rather than relying on volume conversions.

Frequently asked

How many tablespoons are in a cup?+

A US cup is exactly 16 tablespoons, or 48 teaspoons, or 8 fluid ounces, or about 236.59 millilitres. A tablespoon is 3 teaspoons. These volume relationships are exact and do not depend on the ingredient.

How many grams are in a cup of flour?+

About 120 grams for all-purpose flour, using the King Arthur Baking standard. Other ingredients differ: a cup of granulated sugar is roughly 198 g, packed brown sugar 213 g, butter 227 g, and honey about 340 g, because each has a different density.

Why can't I convert cups to grams without choosing an ingredient?+

Cups measure volume and grams measure weight. To go between them you need the ingredient's density (grams per millilitre). A cup of feathers and a cup of lead occupy the same volume but have wildly different weights — same idea with flour versus honey.

Why do recipes recommend weighing ingredients?+

Volume measuring of dry goods is imprecise: how firmly you pack or scoop flour can change its weight by up to 20%, which throws off baking. Weighing in grams removes that variability and is why most professional and serious home baking recipes list weights.

Is a US cup the same as a metric or UK cup?+

No. A US cup is about 236.6 mL, a metric cup (used in Australia and elsewhere) is 250 mL, and the UK historically used an imperial cup of about 284 mL. This calculator uses the US cup. Always check which standard a recipe assumes.

Does this handle fluid ounces versus weight ounces?+

Yes — they are different. A fluid ounce is a volume (about 29.57 mL); a weight ounce is a mass (about 28.35 g). The calculator treats "fluid ounces" as volume and "ounces (weight)" separately, and bridges them with ingredient density when needed.