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Free Cooking Converter (+ Guide)

A free cooking converter that shows every kitchen unit at once, by NIST's units and USDA's ingredient weights.

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Navid Moazzezby Navid Moazzez·Updated 3 oct. 2026·2 min read·
Every kitchen unit at once
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Convert any kitchen amount into every unit at once: cups, spoons, milliliters, grams, ounces and pounds.

1

Your numbers

Cups, spoons and milliliters convert between each other, and grams, ounces and pounds too. Pick an ingredient to cross between them.

2

Your result

Fill in the fields above to see your result.

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This free cooking converter turns any kitchen amount into every unit at once: cups, tablespoons, teaspoons, fluid ounces, milliliters, liters, grams, kilograms, ounces and pounds.

Pick an ingredient, and it crosses from cups and spoons to grams and ounces too.

I built it because a recipe from another country uses units you don't own, and switching between 5 converters for 1 recipe is slow.

Here's how the units fit together, a worked example, and the 1 rule that trips people up.

key_takeaways.mdTL;DR

Key takeaways

A US cup is 8 fluid ounces, 16 tablespoons or 48 teaspoons, about 237 mL.
A tablespoon is 3 teaspoons, and a fluid ounce is 2 tablespoons.
An ounce of weight is 28.35 g, and a pound 453.59 g, both exact by NIST's definition.
Cups and grams only convert through an ingredient, since each one weighs something different.
A fluid ounce measures volume and an ounce measures weight, so they aren't the same.

What is a cooking converter?

A cooking converter changes a kitchen amount from one unit to another.

This one shows every unit at once, so you can pick whichever spoon or cup you have.

How the kitchen units fit together

All the US units come from NIST's Handbook 44, the US standard for weights and measures.

1 cup
Equals
8 fl oz, 16 tbsp
Milliliters
236.6 mL
1 fluid ounce
Equals
2 tbsp
Milliliters
29.6 mL
1 tablespoon
Equals
3 tsp
Milliliters
14.8 mL
1 teaspoon
Equals
⅓ tbsp
Milliliters
4.9 mL

Weight is separate: 1 ounce is 28.35 g and 1 pound is 16 ounces, 453.59 g.

Convert a kitchen amount0/4

A worked example

Here's the example the calculator loads: 1 cup of butter.

That's 16 tablespoons, 48 teaspoons, 8 fluid ounces or 237 mL by volume. By USDA's weight for butter, it's 227 g, 8 oz or half a pound.

Mistakes to avoid

These are the slips that ruin a recipe.

  • Treating a fluid ounce and an ounce of weight as the same thing
  • Converting cups to grams with water's weight for every ingredient
  • Using a cup or spoon from another country's set without checking its size
  • Rounding teaspoons of baking soda or salt too far

Who is the cooking converter for?

It's for cooks with recipes from anywhere, and these tools help around it.

Convert once, and cook the recipe as it was written.

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Cooking Converter FAQs

Questions about the cooking converter? Here's what to know.

A cooking converter changes a kitchen amount from one unit to another.

This free one shows every unit at once.

16 tablespoons, by NIST's units.

3 teaspoons.

About 14.8 mL, which NIST rounds to 15 mL.

No, a fluid ounce measures volume and an ounce measures weight.

They match only for water, roughly.

Pick the ingredient, since each one weighs a different amount per cup.

28.35 g, exactly 28.349523125 g by NIST's definition.

About 4.23 US cups, since a cup is about 237 mL.

Yes, it's free with no sign-up.

It runs in your browser, and your numbers stay on your device.

I did.

I'm Navid Moazzez, and I made the cooking converter as one of my free tools on navid.me.

More about me.

Navid Moazzez

AI business strategist & AI OS builder

Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.

Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.

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