The quart (abbreviation qt.) is an English unit of volume equal to a quarter gallon. It is divided into two pints or four cups. Historically, the exact size of the quart has varied with the different values of gallons over time and in reference to different commodities. Presently, three kinds of quarts remain in use: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system. All are roughly equal to one metric liter.
The imperial quart, used for both liquid or dry capacity, is equal to one quarter of an imperial gallon, or exactly 1.1365225 liters.
| 1 imperial quart | = | 1/4 | imperial gallons |
| = | 2 | imperial pints | |
| = | 40 | imperial fluid ounces | |
| ≡ | 1.1365225 | liters | |
| ≈ | 69.355 | cubic inches | |
| ≈ | 38.430 | US fluid ounces |
| Definition | Relation to SI units |
|---|---|
≡ 1⁄4 gal (imp) |
| US legal cup | pipe | drop (imperial) | pony | imperial minim | fluid scruple | petaliter | hectoliter |
|---|---|---|---|---|---|---|---|
| 1 | 0.0005032 | 2,432.6839108 | 10.8204873 | 4,054.4731847 | 202.7236592 | 2.4 × 10-16 | 0.0024 |
| 1,987.3411866 | 1 | 4,834,572.929895 | 21 504 | 8,057,621.5498223 | 402,881.0774932 | 4.76961884784 × 10-13 | 4.7696188 |
| 0.0004111 | 2.0684350293206 × 10-7 | 1 | 0.0044480 | 1.6666667 | 0.0833333 | 9.86564670138 × 10-20 | 9.86564670138 × 10-7 |
| 0.0924173 | 4.6502976190476 × 10-5 | 224.8220299 | 1 | 374.7033831 | 18.7351692 | 2.2180147171875 × 10-17 | 0.0002218 |
| 0.0002466 | 1.2410610175928 × 10-7 | 0.6000000 | 0.0026688 | 1 | 0.0500000 | 5.91938802083 × 10-20 | 5.91938802083 × 10-7 |
| 0.0049328 | 2.482122035173 × 10-6 | 12.0000000 | 0.0533756 | 20.0000000 | 1 | 1.18387760416 × 10-18 | 1.18387760416 × 10-5 |
| 4.1666666666667 × 1015 | 2 096 603 590 144 | 1.0136182961631 × 1019 | 4.5085363602457 × 1016 | 1.6893638269379 × 1019 | 8.4468191347325 × 1017 | 1 | 10 000 000 000 000 |
| 416.6666667 | 0.2096604 | 1,013,618.2961631 | 4,508.5363602 | 1,689,363.8269379 | 84,468.1913473 | 1.0 × 10-13 | 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
| 1 imperial quarts | = 0.0011365225 cubic meters |
| 2 imperial quarts | = 0.002273045 cubic meters |
| 3 imperial quarts | = 0.0034095675 cubic meters |
| 4 imperial quarts | = 0.00454609 cubic meters |
| 5 imperial quarts | = 0.0056826125 cubic meters |