Tablespoons to Cups Converter | tbsp to Cup Calculator

Convert tablespoons to cups instantly. Supports US customary and metric standards. Free tbsp to cups calculator with step-by-step calculations.

Tablespoons to Cups Converter

Convert tablespoons (tbsp) to cups using US customary or metric standards.

Accepts decimals, fractions (1/2), and scientific notation

Conversion Result

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📐 Conversion Formulas

Tablespoons to Cups:

Key Constants:

  • US Customary: 1 tbsp = 14.78676478125 mL, 1 cup = 236.5882365 mL (16 tbsp per cup)
  • Metric: 1 tbsp = 15 mL, 1 cup = 250 mL (16.667 tbsp per cup)

📝 Step-by-Step Calculation

Enter a value and convert to see the step-by-step breakdown.

Understanding Tablespoons and Cups

Converting tablespoons to cups is a fundamental kitchen skill. Whether you're scaling a recipe up or down or trying to reduce dishes, knowing how many tablespoons make a cup helps you cook and bake with confidence.

How Many Tablespoons in a Cup?

In the US customary system, there are exactly 16 tablespoons in 1 cup. This is the standard used in most American recipes. In the metric system (used in Australia, Canada, and many other countries), a metric cup is 250 mL and a metric tablespoon is 15 mL, giving you approximately 16.67 metric tablespoons per metric cup.

US vs. Metric Tablespoon Differences

The US tablespoon is slightly smaller than the metric tablespoon:

  • US tablespoon: 14.78676478125 mL (defined as 1/2 US fluid ounce)
  • Metric tablespoon: 15 mL exactly (used internationally)

For most recipes, this small difference (about 1.4%) is negligible. However, when precision matters (like in baking), use the correct standard for your recipe source.

Cooking Tips for Tablespoon Measurements

When recipes call for partial cups, it's often easier to measure in tablespoons: half a cup is 8 tablespoons, a quarter cup is 4 tablespoons, and an eighth cup is 2 tablespoons. For very small amounts, convert to teaspoons (3 teaspoons equal 1 tablespoon).

Quick Reference Table

Common tablespoon to cup conversions:

TablespoonsUS CupsMetric CupsCommon Name
10.0630.060
20.1250.120⅛ cup (US)
40.2500.240¼ cup (US)
5⅓0.3330.320⅓ cup (US)
80.5000.480½ cup (US)
10⅔0.6670.640⅔ cup (US)
120.7500.720¾ cup (US)
161.0000.9601 cup (US)
322.0001.9202 cups (US)

Frequently Asked Questions

In the US customary system, there are exactly 16 tablespoons in 1 cup. In the metric system, there are approximately 16.67 metric tablespoons in a 250 mL metric cup.

For US measurements, divide the number of tablespoons by 16 to get cups. For example, 8 tablespoons ÷ 16 = 0.5 cups (half a cup).

A US tablespoon equals 14.787 mL, while a metric tablespoon equals exactly 15 mL. The difference is small (about 1.4%) but can matter in precise baking.

16 US tablespoons equals exactly 1 US cup. This is a convenient relationship that makes measuring easier in the kitchen.

Half a US cup equals 8 tablespoons. This is useful when you don't have a ½ cup measuring cup handy.

Use the standard from your recipe's country of origin. American recipes use US tablespoons, while Australian, Canadian, and international recipes typically use metric (15 mL) tablespoons.

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✓ Accuracy Note: This calculator uses standard culinary conversion factors. The US tablespoon is defined as 1/2 US fluid ounce (14.78676478125 mL), and 16 US tablespoons equal 1 US cup. The metric tablespoon is exactly 15 mL by international agreement.

Last reviewed: January 2026 | Calculator version: 1.0