Gallons to Pints
Convert gallons (gal) to pints (pt). Both measure capacity and volume, and the conversion comes up in cooking, chemistry, fuel work.
The Formula
``
pints = gallons × 8
gallons = pints × 0.125
`
One gallon is 8 pints, and one pint is 0.125 gallons.
Conversion Table
| Gallons | Pints |
|---|---|
| 1 gal | 8 pt |
| 2 gal | 16 pt |
| 5 gal | 40 pt |
| 10 gal | 80 pt |
| 25 gal | 200 pt |
| 50 gal | 400 pt |
| 100 gal | 800 pt |
| 500 gal | 4,000 pt |
| 1,000 gal | 8,000 pt |
The Other Direction
| Pints | Gallons |
|---|---|
| 1 pt | 0.125 gal |
| 2 pt | 0.25 gal |
| 5 pt | 0.625 gal |
| 10 pt | 1.25 gal |
| 25 pt | 3.125 gal |
| 50 pt | 6.25 gal |
| 100 pt | 12.5 gal |
| 500 pt | 62.5 gal |
| 1,000 pt | 125 gal |
What Each Unit Is
Gallons (gal) — the US liquid gallon: exactly 3.785411784 litres. The English wine gallon of 231 cubic inches, kept by the US after Britain moved on in 1824.
Pints (pt) — the US liquid pint: half a quart, or 473.176 millilitres. From the Old French pinte; the US kept the pre-1824 English measure.
A Sense of Scale
A US milk jug is 1 gallon- A car tank is 12–16 gallons
- US fuel economy is miles per gallon
- A US pint of beer is 473 mL
- A UK pint is 568 mL
- Blood donation takes about a pint
Precision
The factor 8 is exact by international agreement, not a rounded approximation. Any imprecision in a result comes from your input, not the conversion.
Watch Out For
- The UK imperial gallon is 4.546 litres — 20% larger. A "gallon" without a country attached is ambiguous, and US MPG figures look worse when read as imperial.
- A UK pint is 20% larger than a US pint — 568 mL against 473 mL.
In Code
`javascript
const gallonToPint = (value) => value * 8;
``
Where This Conversion Comes Up
- Cooking
- Chemistry
- Fuel
- Beverages
- Medicine
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 gal with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 gal becomes | Error |
|---|---|---|---|
| 0 | 8 | 1,096 | — |
| 1 | 8 | 1,096 | — |
| 2 | 8 | 1,096 | — |
| 3 | 8 | 1,096 | — |
| 4 | 8 | 1,096 | — |
The right number of significant figures is set by your input, not by the converter. If you measured gallons to three significant figures, the answer in pints is only good to three — writing more digits claims precision the measurement never had.