Convert Tablespoon (US) to US gallons
Americas · Cooking Measures · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
Quick answer
1 Tablespoon (US) = 0.00390626 US gallons
1 Tablespoon (US) = 0.00390626 US gallons. Tablespoon (US) is a traditional volume unit from Americas.
Convert any amount
Tablespoon (US) to US gallons table
| Tablespoon (US) | US gallons |
|---|---|
| 0.25 Tablespoon (US) | 0.000976565 US gallons |
| 0.5 Tablespoon (US) | 0.00195313 US gallons |
| 1 Tablespoon (US) | 0.00390626 US gallons |
| 2 Tablespoon (US) | 0.00781252 US gallons |
| 3 Tablespoon (US) | 0.0117188 US gallons |
| 4 Tablespoon (US) | 0.015625 US gallons |
| 5 Tablespoon (US) | 0.0195313 US gallons |
| 10 Tablespoon (US) | 0.0390626 US gallons |
| 20 Tablespoon (US) | 0.0781252 US gallons |
| 25 Tablespoon (US) | 0.0976565 US gallons |
| 50 Tablespoon (US) | 0.195313 US gallons |
| 100 Tablespoon (US) | 0.390626 US gallons |
About the Tablespoon (US)
US tablespoon = 14.79ml = 3 teaspoons.
- Symbol
- tbsp
- Value in SI
- 1 Tablespoon (US) = 0.0147868 litre
- Typical use
- cooking
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI litre. See our methodology and data provenance pages for how these values are sourced and verified.
Frequently asked
How many US gallons are in a Tablespoon (US)?
1 Tablespoon (US) = 0.00390626 US gallons. Multiply the number of Tablespoon (US) by 0.0039062593 to get US gallons.
What is Tablespoon (US) used for?
US tablespoon = 14.79ml = 3 teaspoons. It is classified as active and dates from the modern period.
Is the Tablespoon (US) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI litre, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Tablespoon (US) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Tablespoon (US) to US gallons. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/tbsp-us-to-us-gallon
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