Convert tablespoons to US gallons

1 tbsp=0.00391gal (US)

Use the converter below to change any tablespoons value into US gallons instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.0039097

Conversion formula

Forward

US gallons = tablespoons × 0.00391

Reverse

tablespoons = US gallons × 255.771

Example: 10 tbsp × 0.00391 = 0.0391 gal (US).

About both units

From

Tablespoon

tbsp

The US tablespoon equals 14.8 ml (sometimes rounded to 15 ml). The metric tablespoon used in Australia is 20 ml; the UK tablespoon is 17.7 ml. Most international recipes today assume 15 ml as a convenient approximation.

Real-world: Olive-oil recipes call for tablespoons of oil. Cough syrups often recommend 1 tbsp = 15 ml per dose.

Read full tablespoon reference →

US Gallon

gal (US)

The US gallon equals 3.785411784 litres exactly. It is the standard fuel and liquid volume unit in the United States. A typical American car holds 14–18 US gallons of fuel. US fuel economy is quoted in miles per US gallon (mpg).

Real-world: US car tank ≈ 15 gallons (57 L). 1 US gallon of milk is a common grocery size (3.79 L). US paint often sold by the gallon.

Read full us gallon reference →

Tablespoon to US Gallon conversion table

Common tablespoons to US gallons values for quick reference.

Tablespoon (tbsp)	US Gallon (gal (US))
1 tbsp	0.00391 gal (US)
2 tbsp	0.007819 gal (US)
5 tbsp	0.01955 gal (US)
10 tbsp	0.0391 gal (US)
20 tbsp	0.07819 gal (US)
50 tbsp	0.1955 gal (US)
100 tbsp	0.391 gal (US)
200 tbsp	0.7819 gal (US)
500 tbsp	1.95487 gal (US)
1,000 tbsp	3.90975 gal (US)

Tips & common mistakes

Quick tips

US tbsp = 15 ml (practical); 14.787 ml (legal); 3 teaspoons in any system.
Australian tablespoon = 20 ml — 33% larger. Adjust when using Australian recipes.
For accurate cooking, weigh dry ingredients rather than measuring by tablespoon.

Avoid these

Using an Australian tablespoon (20 ml) for a US recipe (15 ml) — 33% overshoot.
Treating teaspoon and tablespoon as interchangeable — tablespoon is 3× larger.
Using a dinner spoon from the cutlery drawer as a tablespoon — they vary widely.

Frequently asked questions

How many US gallons in a tablespoon?

One tablespoon equals 0.00391 US gallons.

How do I convert tablespoons to US gallons?

Multiply the tablespoon value by 0.00391 to get the equivalent in US gallons.

What is 100 tablespoons in US gallons?

100 tablespoons equals 0.391 US gallons.

Is a tablespoon bigger than a us gallon?

No. 1 tablespoon equals 0.00391 US gallons, so one tablespoon is smaller.

How to convert tablespoons to US gallons without a calculator?

Multiply by 0 for a quick estimate; use a calculator for precise results.

Related volume conversions

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