Convert teaspoons to US gallons

1 tsp=0.001302gal (US)

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

You have

Equals

0.0013021

Conversion formula

Forward

US gallons = teaspoons × 0.001302

Reverse

teaspoons = US gallons × 768

Example: 10 tsp × 0.001302 = 0.01302 gal (US).

About both units

From

Teaspoon

tsp

The teaspoon equals 4.929 ml in the US, rounded to 5 ml in most recipes and on medication labels. The relationship 3 teaspoons = 1 tablespoon is universal across US, UK and metric systems. Precision medicine and small-volume cooking rely on teaspoons.

Real-world: 1 teaspoon of sugar = 4 g = 16 calories. Salt in a recipe often ½ to 1 tsp per 500 g food.

Read full teaspoon 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 →

Teaspoon to US Gallon conversion table

Common teaspoons to US gallons values for quick reference.

Teaspoon (tsp)	US Gallon (gal (US))
1 tsp	0.001302 gal (US)
2 tsp	0.002604 gal (US)
5 tsp	0.00651 gal (US)
10 tsp	0.01302 gal (US)
20 tsp	0.02604 gal (US)
50 tsp	0.0651 gal (US)
100 tsp	0.1302 gal (US)
200 tsp	0.2604 gal (US)
500 tsp	0.651 gal (US)
1,000 tsp	1.30208 gal (US)

Tips & common mistakes

Quick tips

1 tsp = 5 ml (practical); 4.929 ml (US legal).
3 tsp = 1 tbsp universally.
Use a proper measuring spoon — household teaspoons vary 3–8 ml.

Avoid these

Using a regular cutlery teaspoon for medication — can over- or under-dose by 30–60%.
Mixing tsp and tbsp — 3× difference.
Assuming "a pinch" or "a dash" is reproducible — it varies 0.1 to 0.5 ml.

Frequently asked questions

How many US gallons in a teaspoon?

One teaspoon equals 0.001302 US gallons.

How do I convert teaspoons to US gallons?

Multiply the teaspoon value by 0.001302 to get the equivalent in US gallons.

What is 100 teaspoons in US gallons?

100 teaspoons equals 0.1302 US gallons.

Is a teaspoon bigger than a us gallon?

No. 1 teaspoon equals 0.001302 US gallons, so one teaspoon is smaller.

How to convert teaspoons to US gallons without a calculator?

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

Related volume conversions

📊 See full comparison matrix →

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