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Tablespoons to ml Converter: Convert Tbsp to Milliliters

Convert culinary tablespoons (tbsp) to milliliters (ml) with exact US customary, metric, and UK volume standards.

Quick Answer:1 US customary tablespoon equals exactly 14.78676478125 ml (customarily rounded to 15 ml in domestic cooking). An official metric culinary tablespoon is defined as exactly 15.0 ml.

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How to Use the Tablespoons to ml Converter (US, Metric & UK Tbsp)

1Enter the count of tablespoons (tbsp) into the cooking calculator.
2Select your desired decimal precision for culinary accuracy.
3View the converted milliliter volume calculated with official NIST specifications.
4Compare spoon values against international kitchen spoon standards in the reference table.

Formula & How It Works

Culinary Spoon Volume Factor

US Milliliters = Tablespoons × 14.78676478125

Based on 1 US tablespoon = 1/2 US fluid ounce = 3 teaspoons = 14.78676478125 ml (exact). Source: NIST Handbook 44 / USDA Food Measurement Standards.

Worked Examples

Baking Vanilla Extract (1 tbsp)

Input: 1 tbsp

Explanation: 1 × 14.78676478125 = 14.7868 ml vanilla flavor.

Result: 14.7868 ml (US) | 15.0000 ml (Metric)

Olive Oil Vinaigrette Dressing (3 tbsp)

Input: 3 tbsp

Explanation: 3 × 14.78676478125 = 44.36029... ml salad dressing.

Result: 44.3603 ml (US) | 45.0000 ml (Metric)

Baking Powder Leavening Spoon (0.5 tbsp)

Input: 0.5 tbsp (1.5 teaspoons)

Explanation: 0.5 × 14.78676478125 = 7.39338... ml.

Result: 7.3934 ml (US)

Frequently Asked Questions

How many ml are contained in a single US tablespoon?▼

A single US customary tablespoon contains exactly 14.78676478125 milliliters (rounded to 15 ml in domestic cooking).

How many teaspoons make up 1 tablespoon?▼

There are exactly 3 teaspoons in 1 standard tablespoon across US and metric systems.

Why do Australian recipes use 20 ml tablespoons?▼

Australia's national weights and measures define a culinary tablespoon as 4 teaspoons (20 ml) rather than the 3 teaspoons (15 ml) standard in the US, UK, and Canada.

How many tablespoons are needed for 45 ml?▼

45 ml equals exactly 3 metric tablespoons, or approximately 3.04 US customary tablespoons.

Can I use flatware cutlery for culinary baking tablespoons?▼

No; eating cutlery spoons vary from 8 ml to 22 ml. Dedicated calibrated measuring spoons are essential for baking.

How many tablespoons equal 1/4 cup?▼

There are exactly 4 tablespoons in 1/4 US cup (59.15 ml).

Quick Reference & Conversion Table

Tablespoon Serving (tbsp)	US Customary (ml)	Metric Culinary (ml)	Teaspoon Equivalent (tsp)
1/2 tbsp	7.393 ml	7.500 ml	1.5 tsp
1 tbsp	14.787 ml	15.000 ml	3.0 tsp
2 tbsp	29.574 ml	30.000 ml	6.0 tsp
3 tbsp (dressing)	44.360 ml	45.000 ml	9.0 tsp
4 tbsp (quarter cup)	59.147 ml	60.000 ml	12.0 tsp
6 tbsp	88.721 ml	90.000 ml	18.0 tsp
8 tbsp (half cup)	118.294 ml	120.000 ml	24.0 tsp
16 tbsp (full cup)	236.588 ml	240.000 ml	48.0 tsp

⚠️ Common Pitfalls to Avoid

•Confusing tablespoons (tbsp / T, ~15 ml) with teaspoons (tsp / t, ~5 ml; 1 tbsp holds exactly 3 tsp).
•Using a rounded dining soup spoon rather than a calibrated flat measuring spoon.
•Assuming Australian culinary spoons are 15 ml (in Australia, an official culinary spoon is 20 ml / 4 teaspoons).