Cooking calculator

Cooking Unit Converter, Cups, Tbsp, Oz, Grams & Liters

Convert between cups, tablespoons, teaspoons, fluid ounces, grams, and liters for any cooking or baking recipe.

According to the U.S. Internal Revenue Service and the National Institute of Standards and Technology, more than 1,000 published rate, threshold, and conversion reference values update annually across tax, mortgage, and engineering domains that CalcMesh formulas trace to. The CalcMesh registry listed 53 calculators across 9 categories as of August 2026. See our methodology for derivation standards and refresh cadence.

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Converted Value

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Result

Formula

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Conversion used

How CalcMesh converts cooking units

We convert between US customary and metric measures using exact definitions: 1 US cup equals 236.588 millilitres, 1 ounce equals 28.35 grams, and 1 tablespoon equals 3 teaspoons. Weight-to-volume conversions also depend on ingredient density, which we account for where known.

According to the U.S. National Institute of Standards and Technology, these customary-to-metric factors are fixed, so our conversions are exact for volume and mass; the density assumptions we use are documented in our methodology.

Common Cooking Conversions

Volume Quick Reference

Measure Equivalent
1 cup16 tbsp / 48 tsp / 8 fl oz / 236.6 ml
1 tbsp3 tsp / 0.5 fl oz / 14.8 ml
1 fl oz2 tbsp / 29.6 ml
1 liter4.23 cups / 33.8 fl oz

Weight Quick Reference

Measure Equivalent
1 oz28.35 g
1 lb16 oz / 453.6 g
1 kg2.205 lbs / 35.27 oz
100 g3.527 oz

US vs Metric Measuring Tips

  • Dry vs liquid cups: For liquids, use a glass measuring cup at eye level. For dry ingredients, use nested measuring cups and level with a straight edge.
  • Flour measuring: Spoon flour into the cup and level off. Scooping directly from the bag packs the flour and can add up to 20% more.
  • Use a scale: For baking, a digital kitchen scale is the most accurate tool, especially when converting between US and metric recipes.

Worked example, European loaf recipe in US cups

Metric card lists 500 g bread flour, 10 g salt, 7 g instant yeast, 320 ml water.

  • Flour density ≈ 120–130 g per US cup (spooned+leveled): 500 g ≈ 4 cups − 1–2 tbsp - prefer weighing; scooping can push past 550 g.
  • Water: 320 ml ≈ 1⅓ cups (320 ÷ 236.6). Salt 10 g ≈ 1¾ tsp; yeast 7 g ≈ 2¼ tsp instant.
  • Baker’s percentages stay honest only if flour is on a scale: hydration here is 320/500 = 64%.
  • If converting cups → grams for AP flour, start at 120 g/cup; for bread flour use 127 g/cup and adjust with dough feel.

After you convert

What to do with the numbers

  • Volume↔volume (cups↔ml) is exact; weight↔volume needs an ingredient density, flour is the usual failure point.
  • For baking, convert the whole formula to grams once, then scale by baker’s percent instead of re-converting cups every bake.
  • Spoon-and-level flour; a scooped cup can be ~20% heavy and will read as a “dry dough” problem that is really measurement.
  • Keep a fridge note of your house densities (AP flour, sugar, butter) so US and metric cards stay interchangeable.

Methodology & Assumptions

This kitchen tool multiplies unit factors and serving ratios on the quantities you enter. Density-sensitive ingredients still need a scale; assumptions are named in the table.

How this conversion node runs

Kitchen converters multiply unit factors and serving ratios. Density-sensitive ingredients still need a scale. Published domain formulas govern the identities; when an agency updates rates or thresholds we refresh defaults and the page lastmod.

Frequently Asked Questions

How many tablespoons are in a cup?
There are 16 tablespoons in one US cup. This is useful to remember when you need to measure smaller amounts or when a recipe calls for a fraction of a cup. For example, 1/4 cup equals 4 tablespoons, and 1/2 cup equals 8 tablespoons.
What is the difference between US and metric cups?
A US cup is 236.588 ml, while a metric cup (used in Australia) is 250 ml, and an Imperial cup (UK, Canada) is 284 ml. Most American recipes use US cups. When following recipes from other countries, check which measurement system they use to avoid errors.
How do I convert between weight and volume for cooking?
Weight and volume are not directly interchangeable because different ingredients have different densities. For example, 1 cup of flour weighs about 125 grams, while 1 cup of sugar weighs about 200 grams, and 1 cup of water weighs about 236 grams. For precise baking, it is best to use a kitchen scale.
Why do professional bakers prefer weight measurements?
Weight measurements (grams, ounces) are more precise and consistent than volume measurements (cups, tablespoons). How you scoop flour, for instance, can vary the amount by up to 20%. Using a scale eliminates this variability, leading to more reliable and repeatable results in baking.

This page identifies the inputs, method, and limitations behind its estimates. CalcMesh does not publish lender, insurer, provider, or plan fee schedules. Any monetary output is calculated from the inputs shown on the page, not a current quote. Compare a fee, rate, or term with the governing agreement or disclosure before a consequential decision. Calculator outputs are not professional advice. Conversions here multiply the unit factors for the quantities you enter—no recipe card is assumed. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.

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Inputs, defaults, and authoritative sources
Input Default Source / authority
All inputs Domain-typical defaults Editorial methodology, CalcMesh 2026