Quarts to Pints
Convert quarts (qt) to pints (pt). Both measure capacity and volume, and the conversion comes up in cooking, chemistry, fuel work.
The Formula
``
pints = quarts × 2
quarts = pints × 0.5
`
One quart is 2 pints, and one pint is 0.5 quarts.
Conversion Table
| Quarts | Pints |
|---|---|
| 1 qt | 2 pt |
| 2 qt | 4 pt |
| 5 qt | 10 pt |
| 10 qt | 20 pt |
| 25 qt | 50 pt |
| 50 qt | 100 pt |
| 100 qt | 200 pt |
| 500 qt | 1,000 pt |
| 1,000 qt | 2,000 pt |
The Other Direction
| Pints | Quarts |
|---|---|
| 1 pt | 0.5 qt |
| 2 pt | 1 qt |
| 5 pt | 2.5 qt |
| 10 pt | 5 qt |
| 25 pt | 12.5 qt |
| 50 pt | 25 qt |
| 100 pt | 50 qt |
| 500 pt | 250 qt |
| 1,000 pt | 500 qt |
What Each Unit Is
Quarts (qt) — a quarter of a US gallon, or 0.946352946 litres. From the Latin quartus, a fourth part of a gallon.
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 quart is just under a litre- Ice cream is sold by the quart
- A quart is two pints
- A US pint of beer is 473 mL
- A UK pint is 568 mL
- Blood donation takes about a pint
Precision
The factor 2 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.
Watch Out For
- A UK pint is 20% larger than a US pint — 568 mL against 473 mL.
In Code
`javascript
const quartToPint = (value) => value * 2;
``
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 qt with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 qt becomes | Error |
|---|---|---|---|
| 0 | 2 | 274 | — |
| 1 | 2 | 274 | — |
| 2 | 2 | 274 | — |
| 3 | 2 | 274 | — |
| 4 | 2 | 274 | — |
The right number of significant figures is set by your input, not by the converter. If you measured quarts to three significant figures, the answer in pints is only good to three — writing more digits claims precision the measurement never had.