1 US gallon equals 768 teaspoons. To convert US gallons to teaspoons, multiply the US gallon value by 768. For quick reference: 1 gal = 768 tsp, 5 gal = 3840 tsp, 10 gal = 7680 tsp, 100 gal = 76800 tsp.
FormulaTeaspoons = US gallons × 768
Quick
How to convert US gallons to teaspoons
1
Take your value
Start with your value in US gallons.
2
Multiply by 768
Multiply the US gallon value by 768. This is the exact conversion factor from US gallons to teaspoons.
3
Read the result
The product is your value in teaspoons. For example, 5 gal × 768 = 3840 tsp.
Conversion formula
The exact factor from US gallons to teaspoons is 768.
Teaspoons = US gallons × 768
US gallons to Teaspoons 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 teaspoons
US gallons (gal)
Teaspoons (tsp)
0.1 gal
76.8 tsp
0.25 gal
192 tsp
0.5 gal
384 tsp
1 gal
768 tsp
1.5 gal
1152 tsp
2 gal
1536 tsp
2.5 gal
1920 tsp
3 gal
2304 tsp
4 gal
3072 tsp
5 gal
3840 tsp
6 gal
4608 tsp
7 gal
5376 tsp
8 gal
6144 tsp
9 gal
6912 tsp
10 gal
7680 tsp
12 gal
9216 tsp
15 gal
11520 tsp
20 gal
15360 tsp
25 gal
19200 tsp
30 gal
23040 tsp
40 gal
30720 tsp
50 gal
38400 tsp
60 gal
46080 tsp
75 gal
57600 tsp
100 gal
76800 tsp
125 gal
96000 tsp
150 gal
115200 tsp
200 gal
153600 tsp
250 gal
192000 tsp
300 gal
230400 tsp
400 gal
307200 tsp
500 gal
384000 tsp
600 gal
460800 tsp
750 gal
576000 tsp
1000 gal
768000 tsp
1500 gal
1152000 tsp
2000 gal
1536000 tsp
2500 gal
1920000 tsp
3000 gal
2304000 tsp
4000 gal
3072000 tsp
5000 gal
3840000 tsp
7500 gal
5760000 tsp
10000 gal
7680000 tsp
15000 gal
11520000 tsp
20000 gal
15360000 tsp
25000 gal
19200000 tsp
30000 gal
23040000 tsp
40000 gal
30720000 tsp
50000 gal
38400000 tsp
100000 gal
76800000 tsp
Real-world reference
A standard US milk jug holds 1 gal. An average car's fuel tank is 12–16 gal. In teaspoons, that gives you: 1 gal = 768 tsp, 10 gal = 7680 tsp, 100 gal = 76800 tsp.
Frequently asked questions
How many teaspoons are in 1 US gallon?
1 US gallon equals 768 teaspoons.
How do I convert US gallons to teaspoons?
Multiply the US gallon value by 768. So x gal × 768 = the equivalent in tsp.
What is 5 US gallons in teaspoons?
5 US gallons equals 3840 teaspoons.
What is 10 US gallons in teaspoons?
10 US gallons equals 7680 teaspoons.
What is 100 US gallons in teaspoons?
100 US gallons equals 76800 teaspoons.
How do I convert back from teaspoons to US gallons?
Multiply the teaspoon value by 0.00130208. For example, 1 tsp = 0.00130208 gal.
Is the US gallon bigger than the teaspoon?
Yes. 1 US gallon is larger than 1 teaspoon — specifically 768 times larger.
Are these conversion factors exact?
Yes. The factor of 768 is derived directly from the SI definitions of US gallon and teaspoon.
About the US gallon and the teaspoon
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 teaspoon
The US teaspoon equals 1/3 of a US tablespoon, or about 4.929 mL. The metric teaspoon (used on most non-US nutrition labels) is exactly 5 mL — close enough that you can substitute freely in cooking but not in precise dosing.