Convert US Teaspoon to US Gallon
1 us teaspoon = 0.001302083 us gallon (gal). For example, 10 us teaspoon = 0.01302083 us gallon and 100 us teaspoon = 0.1302083 us gallon. Type any value below to convert us teaspoon to us gallon both ways — it runs entirely in your browser.
Quick answer: US Teaspoon to US Gallon
1 US Teaspoon = 0.001302083 US Gallon (tsp → gal). To convert us teaspoon to us gallon, multiply by 0.001302083. To convert us gallon to us teaspoon, multiply by 768. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common us teaspoon-to-us gallon questions.
How to convert US Teaspoon to US Gallon
To convert us teaspoon to us gallon, multiply the number of us teaspoon by the conversion factor 0.001302083, because 1 tsp = 0.001302083 gal. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 gal = 768 tsp, so you divide by 0.001302083 (or multiply by 768) to turn us gallon back into us teaspoon.
gal = tsp × 0.001302083 ·
tsp = gal × 768
- Write down the value you want to convert, in us teaspoon.
- Multiply it by 0.001302083.
- The result is the same area/length/quantity expressed in us gallon.
US Teaspoon to US Gallon — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 us teaspoon is 0.006510417 us gallon because 5 tsp × 0.001302083 = 0.006510417 gal.
| US Teaspoon | Calculation | US Gallon |
|---|---|---|
| 1 tsp | 1 tsp × 0.001302083 = 0.001302083 gal | 0.001302083 gal |
| 2 tsp | 2 tsp × 0.001302083 = 0.002604167 gal | 0.002604167 gal |
| 3 tsp | 3 tsp × 0.001302083 = 0.00390625 gal | 0.00390625 gal |
| 5 tsp | 5 tsp × 0.001302083 = 0.006510417 gal | 0.006510417 gal |
| 7 tsp | 7 tsp × 0.001302083 = 0.009114583 gal | 0.009114583 gal |
| 10 tsp | 10 tsp × 0.001302083 = 0.01302083 gal | 0.01302083 gal |
| 12 tsp | 12 tsp × 0.001302083 = 0.015625 gal | 0.015625 gal |
| 15 tsp | 15 tsp × 0.001302083 = 0.01953125 gal | 0.01953125 gal |
| 20 tsp | 20 tsp × 0.001302083 = 0.02604167 gal | 0.02604167 gal |
| 25 tsp | 25 tsp × 0.001302083 = 0.03255208 gal | 0.03255208 gal |
| 50 tsp | 50 tsp × 0.001302083 = 0.06510417 gal | 0.06510417 gal |
| 100 tsp | 100 tsp × 0.001302083 = 0.1302083 gal | 0.1302083 gal |
Common US Teaspoon to US Gallon conversions
These are the us teaspoon-to-us gallon values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 us teaspoon = 0.001302083 us gallon
- 2 us teaspoon = 0.002604167 us gallon
- 2.5 us teaspoon = 0.003255208 us gallon
- 3 us teaspoon = 0.00390625 us gallon
- 4 us teaspoon = 0.005208333 us gallon
- 5 us teaspoon = 0.006510417 us gallon
- 6 us teaspoon = 0.0078125 us gallon
- 7 us teaspoon = 0.009114583 us gallon
- 8 us teaspoon = 0.01041667 us gallon
- 9 us teaspoon = 0.01171875 us gallon
- 10 us teaspoon = 0.01302083 us gallon
- 12 us teaspoon = 0.015625 us gallon
- 15 us teaspoon = 0.01953125 us gallon
- 20 us teaspoon = 0.02604167 us gallon
- 25 us teaspoon = 0.03255208 us gallon
- 30 us teaspoon = 0.0390625 us gallon
- 50 us teaspoon = 0.06510417 us gallon
- 75 us teaspoon = 0.09765625 us gallon
- 100 us teaspoon = 0.1302083 us gallon
- 200 us teaspoon = 0.2604167 us gallon
- 500 us teaspoon = 0.6510417 us gallon
- 1000 us teaspoon = 1.302083 us gallon
US Teaspoon to US Gallon conversion chart (both directions)
The chart below converts us teaspoon to us gallon and us gallon to us teaspoon side by side, so it works whichever way you need. 1 us teaspoon = 0.001302083 us gallon, and 1 us gallon = 768 us teaspoon.
| US Teaspoon → US Gallon | US Gallon → US Teaspoon |
|---|---|
| 0.25 tsp = 0.0003255208 gal | 0.25 gal = 192 tsp |
| 0.5 tsp = 0.0006510417 gal | 0.5 gal = 384 tsp |
| 1 tsp = 0.001302083 gal | 1 gal = 768 tsp |
| 2 tsp = 0.002604167 gal | 2 gal = 1,536 tsp |
| 3 tsp = 0.00390625 gal | 3 gal = 2,304 tsp |
| 4 tsp = 0.005208333 gal | 4 gal = 3,072 tsp |
| 5 tsp = 0.006510417 gal | 5 gal = 3,840 tsp |
| 6 tsp = 0.0078125 gal | 6 gal = 4,608 tsp |
| 7 tsp = 0.009114583 gal | 7 gal = 5,376 tsp |
| 8 tsp = 0.01041667 gal | 8 gal = 6,144 tsp |
| 9 tsp = 0.01171875 gal | 9 gal = 6,912 tsp |
| 10 tsp = 0.01302083 gal | 10 gal = 7,680 tsp |
| 12 tsp = 0.015625 gal | 12 gal = 9,216 tsp |
| 15 tsp = 0.01953125 gal | 15 gal = 11,520 tsp |
| 20 tsp = 0.02604167 gal | 20 gal = 15,360 tsp |
| 25 tsp = 0.03255208 gal | 25 gal = 19,200 tsp |
| 30 tsp = 0.0390625 gal | 30 gal = 23,040 tsp |
| 40 tsp = 0.05208333 gal | 40 gal = 30,720 tsp |
| 50 tsp = 0.06510417 gal | 50 gal = 38,400 tsp |
| 75 tsp = 0.09765625 gal | 75 gal = 57,600 tsp |
| 100 tsp = 0.1302083 gal | 100 gal = 76,800 tsp |
| 150 tsp = 0.1953125 gal | 150 gal = 115,200 tsp |
| 200 tsp = 0.2604167 gal | 200 gal = 153,600 tsp |
| 250 tsp = 0.3255208 gal | 250 gal = 192,000 tsp |
| 500 tsp = 0.6510417 gal | 500 gal = 384,000 tsp |
| 1000 tsp = 1.302083 gal | 1000 gal = 768,000 tsp |
US Teaspoon vs US Gallon: which is bigger?
A us gallon is the larger unit: one us gallon equals 768 us teaspoons. Put another way, you need 768 us teaspoons to make a single us gallon.
What is a US Teaspoon? History, origin and usage
The teaspoon began as the small spoon used to stir tea, which arrived in England in the 1600s, and its size grew as tea became cheaper and teacups larger through the early 1700s. It was eventually standardised at one third of a tablespoon, the proportion still used in the US customary system.
The teaspoon is the standard small measure for baking powder, salt, vanilla, spices and other potent ingredients in cooking. It is also a familiar dose marker for liquid medicines, though health authorities prefer proper millilitre measuring for medication.
A US teaspoon is one sixth of a fluid ounce and one third of a tablespoon, a tidy ratio that makes scaling recipes easy. Using an ordinary tea-drinking spoon instead of a measuring teaspoon is a common source of inaccurate baking.
What is a US Gallon? History, origin and usage
The everyday American gallon (written simply gal) is the very same US liquid gallon, inherited from the Queen Anne wine gallon of 231 cubic inches; the word gallon itself comes from the Old Northern French galon, a measure for liquids. The US locked this value in when it set its weights and measures in the 1830s.
This is the gallon Americans meet at the petrol pump, the supermarket milk aisle and the hardware-store paint shelf. It underlies the familiar miles-per-gallon figure used to compare car fuel economy in the United States.
Because Britain switched to the larger imperial gallon in 1824, a US gallon holds about a fifth less than a UK gallon, so a car rated 40 mpg in the US is actually thirstier than 40 mpg quoted in imperial gallons. The two systems share a name but not a size.
Convert 1 US Teaspoon to other units
It can help to see a us teaspoon next to the other units it is commonly compared with. One us teaspoon (tsp) is equal to:
| 1 US Teaspoon equals | Unit |
|---|---|
| 4.928922 mL | Millilitre |
| 0.4928922 cL | Centilitre |
| 0.004928922 L | Litre |
| 0.000004928922 m³ | Cubic Metre |
| 4.928922 cm³ | Cubic Centimetre |
| 0.3007813 in³ | Cubic Inch |
| 0.0001740632 ft³ | Cubic Foot |
| 0.001302083 US gal | US Gallon |
| 0.001302083 gal | US Gallon |
| 0.005208333 US qt | US Quart |
| 0.005208333 qt | US Quart |
| 0.01041667 US pt | US Pint |
| 0.01041667 pt | US Pint |
| 0.1666667 US fl oz | US Fluid Ounce |
| 0.1666667 fl oz | US Fluid Ounce |
| 0.1734738 imp fl oz | Imperial Fluid Ounce |
| 0.3333333 tbsp | US Tablespoon |
| 0.04166667 gi | US Gill |
| 0.0001398709 bu | US Bushel |
| 0.00003100198 bbl | Oil Barrel |
| 4,928.922 µL | Microlitre |
| 0.02083333 US cup | US Cup |
| 0.1666667 US fl oz | US Fluid Ounce |
Convert 1 US Gallon to other units
One us gallon (gal) is equal to:
| 1 US Gallon equals | Unit |
|---|---|
| 3,785.412 mL | Millilitre |
| 378.5412 cL | Centilitre |
| 3.785412 L | Litre |
| 0.003785412 m³ | Cubic Metre |
| 3,785.412 cm³ | Cubic Centimetre |
| 231 in³ | Cubic Inch |
| 0.1336806 ft³ | Cubic Foot |
| 1 US gal | US Gallon |
| 4 US qt | US Quart |
| 4 qt | US Quart |
| 8 US pt | US Pint |
| 8 pt | US Pint |
| 128 US fl oz | US Fluid Ounce |
| 128 fl oz | US Fluid Ounce |
| 133.2279 imp fl oz | Imperial Fluid Ounce |
| 256 tbsp | US Tablespoon |
| 768 tsp | US Teaspoon |
| 32 gi | US Gill |
| 0.1074209 bu | US Bushel |
| 0.02380952 bbl | Oil Barrel |
| 3,785,412 µL | Microlitre |
| 16 US cup | US Cup |
| 128 US fl oz | US Fluid Ounce |
Tips for converting US Teaspoon to US Gallon
- To go from us teaspoon to us gallon, multiply by 0.001302083; to go back, divide by 0.001302083 (or multiply by 768).
- For a quick mental estimate, remember that 1 us teaspoon ≈ 0.001302083 us gallon, so 10 us teaspoon ≈ 0.01302083 us gallon.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this US Teaspoon to US Gallon converter
Type a number into the US Teaspoon field and the equivalent in US Gallon appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the US Gallon field to convert the other way (us gallon to us teaspoon). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 tsp = 0.001302083 gal), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for us teaspoon-to-us gallon conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary units. The inch, foot, yard and mile are defined exactly in metres by the 1959 international yard-and-pound agreement, so every imperial figure on this page is exact, not rounded.
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
Watch the system: a <strong>US</strong> gallon, quart, pint and fluid ounce are <strong>not</strong> the same size as the <strong>imperial (UK)</strong> ones — a US gallon is 3.785 L while an imperial gallon is 4.546 L, and a US fluid ounce (29.57 mL) is slightly larger than an imperial fluid ounce (28.41 mL). The units on this page are labelled US or Imperial so the result is unambiguous.
Frequently asked questions
- How many us gallon are in 1 us teaspoon?
- 1 us teaspoon = 0.001302083 us gallon (gal). To convert any number of us teaspoon to us gallon, multiply by 0.001302083.
- How do I convert us teaspoon to us gallon?
- Multiply the number of us teaspoon by 0.001302083. For example, 10 us teaspoon = 10 × 0.001302083 = 0.01302083 us gallon, and 25 us teaspoon = 0.03255208 us gallon.
- How many us teaspoon are in 1 us gallon?
- 1 us gallon = 768 us teaspoon. So to convert us gallon back to us teaspoon, multiply by 768.
- What is the formula to convert us teaspoon to us gallon?
- us gallon = us teaspoon × 0.001302083. The reverse formula is us teaspoon = us gallon × 768.
- How much is 100 us teaspoon in us gallon?
- 100 us teaspoon = 0.1302083 us gallon. (And 1000 us teaspoon = 1.302083 us gallon.)
- Which is bigger, a us teaspoon or a us gallon?
- A us gallon is larger: 1 us gallon = 768 us teaspoon.
- Is this us teaspoon to us gallon converter accurate?
- Yes — every value is computed from the exact 0.001302083 gal per tsp factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert us gallon to us teaspoon too?
- Yes. The converter works both ways — enter a value in either field. 1 us gallon = 768 us teaspoon.