1 US gallon equals 256 tablespoons. To convert US gallons to tablespoons, multiply the US gallon value by 256. For quick reference: 1 gal = 256 tbsp, 5 gal = 1280 tbsp, 10 gal = 2560 tbsp, 100 gal = 25600 tbsp.
FormulaTablespoons = US gallons × 256
Quick
How to convert US gallons to tablespoons
1
Take your value
Start with your value in US gallons.
2
Multiply by 256
Multiply the US gallon value by 256. This is the exact conversion factor from US gallons to tablespoons.
3
Read the result
The product is your value in tablespoons. For example, 5 gal × 256 = 1280 tbsp.
Conversion formula
The exact factor from US gallons to tablespoons is 256.
Tablespoons = US gallons × 256
US gallons to Tablespoons conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
Conversion table from US gallons to tablespoons
US gallons (gal)
Tablespoons (tbsp)
0.1 gal
25.6 tbsp
0.25 gal
64 tbsp
0.5 gal
128 tbsp
1 gal
256 tbsp
1.5 gal
384 tbsp
2 gal
512 tbsp
2.5 gal
640 tbsp
3 gal
768 tbsp
4 gal
1024 tbsp
5 gal
1280 tbsp
6 gal
1536 tbsp
7 gal
1792 tbsp
8 gal
2048 tbsp
9 gal
2304 tbsp
10 gal
2560 tbsp
12 gal
3072 tbsp
15 gal
3840 tbsp
20 gal
5120 tbsp
25 gal
6400 tbsp
30 gal
7680 tbsp
40 gal
10240 tbsp
50 gal
12800 tbsp
60 gal
15360 tbsp
75 gal
19200 tbsp
100 gal
25600 tbsp
125 gal
32000 tbsp
150 gal
38400 tbsp
200 gal
51200 tbsp
250 gal
64000 tbsp
300 gal
76800 tbsp
400 gal
102400 tbsp
500 gal
128000 tbsp
600 gal
153600 tbsp
750 gal
192000 tbsp
1000 gal
256000 tbsp
1500 gal
384000 tbsp
2000 gal
512000 tbsp
2500 gal
640000 tbsp
3000 gal
768000 tbsp
4000 gal
1024000 tbsp
5000 gal
1280000 tbsp
7500 gal
1920000 tbsp
10000 gal
2560000 tbsp
15000 gal
3840000 tbsp
20000 gal
5120000 tbsp
25000 gal
6400000 tbsp
30000 gal
7680000 tbsp
40000 gal
10240000 tbsp
50000 gal
12800000 tbsp
100000 gal
25600000 tbsp
Real-world reference
A standard US milk jug holds 1 gal. An average car's fuel tank is 12–16 gal. In tablespoons, that gives you: 1 gal = 256 tbsp, 10 gal = 2560 tbsp, 100 gal = 25600 tbsp.
Frequently asked questions
How many tablespoons are in 1 US gallon?
1 US gallon equals 256 tablespoons.
How do I convert US gallons to tablespoons?
Multiply the US gallon value by 256. So x gal × 256 = the equivalent in tbsp.
What is 5 US gallons in tablespoons?
5 US gallons equals 1280 tablespoons.
What is 10 US gallons in tablespoons?
10 US gallons equals 2560 tablespoons.
What is 100 US gallons in tablespoons?
100 US gallons equals 25600 tablespoons.
How do I convert back from tablespoons to US gallons?
Multiply the tablespoon value by 0.00390625. For example, 1 tbsp = 0.00390625 gal.
Is the US gallon bigger than the tablespoon?
Yes. 1 US gallon is larger than 1 tablespoon — specifically 256 times larger.
Are these conversion factors exact?
Yes. The factor of 256 is derived directly from the SI definitions of US gallon and tablespoon.
About the US gallon and the tablespoon
The US gallon
The US liquid gallon equals exactly 3.785411784 liters, defined as 231 cubic inches. It is the standard fuel and milk unit in the United States. The US gallon is about 16.7% smaller than the UK (imperial) gallon (4.54609 L), so quoting fuel economy as 'mpg' without specifying the gallon can mislead by a wide margin.
The tablespoon
The US tablespoon equals 1/2 US fluid ounce, or 14.7868 mL — exactly 3 US teaspoons. The UK tablespoon is 17.7582 mL (5/8 imperial fl oz), the Australian metric tablespoon is 20 mL, and most other metric countries use 15 mL. Always check the source's convention before scaling a recipe.