| imperial gallon | 1 gal (imp) | 2 gal (imp) | 3 gal (imp) | 4 gal (imp) | 5 gal (imp) | 6 gal (imp) | 7 gal (imp) | 8 gal (imp) | 9 gal (imp) | 10 gal (imp) | 11 gal (imp) | 12 gal (imp) | 13 gal (imp) | 14 gal (imp) | 15 gal (imp) | 16 gal (imp) | 17 gal (imp) | 18 gal (imp) | 19 gal (imp) | 20 gal (imp) | 21 gal (imp) | 22 gal (imp) | 23 gal (imp) | 24 gal (imp) | 25 gal (imp) | 26 gal (imp) | 27 gal (imp) | 28 gal (imp) | 29 gal (imp) | 30 gal (imp) | 31 gal (imp) | 32 gal (imp) | 33 gal (imp) | 34 gal (imp) | 35 gal (imp) | 36 gal (imp) | 37 gal (imp) | 38 gal (imp) | 39 gal (imp) | 40 gal (imp) | 41 gal (imp) | 42 gal (imp) | 43 gal (imp) | 44 gal (imp) | 45 gal (imp) | 46 gal (imp) | 47 gal (imp) | 48 gal (imp) | 49 gal (imp) | 50 gal (imp) | 51 gal (imp) | 52 gal (imp) | 53 gal (imp) | 54 gal (imp) | 55 gal (imp) | 56 gal (imp) | 57 gal (imp) | 58 gal (imp) | 59 gal (imp) | 60 gal (imp) | 61 gal (imp) | 62 gal (imp) | 63 gal (imp) | 64 gal (imp) | 65 gal (imp) | 66 gal (imp) | 67 gal (imp) | 68 gal (imp) | 69 gal (imp) | 70 gal (imp) | 71 gal (imp) | 72 gal (imp) | 73 gal (imp) | 74 gal (imp) | 75 gal (imp) | 76 gal (imp) | 77 gal (imp) | 78 gal (imp) | 79 gal (imp) | 80 gal (imp) | 81 gal (imp) | 82 gal (imp) | 83 gal (imp) | 84 gal (imp) | 85 gal (imp) | 86 gal (imp) | 87 gal (imp) | 88 gal (imp) | 89 gal (imp) | 90 gal (imp) | 91 gal (imp) | 92 gal (imp) | 93 gal (imp) | 94 gal (imp) | 95 gal (imp) | 96 gal (imp) | 97 gal (imp) | 98 gal (imp) | 99 gal (imp) | 100 gal (imp) |
| fluid scruple | 3,840.0000000 fl s | 7,680.0000000 fl s | 11,520.0000001 fl s | 15,360.0000001 fl s | 19,200.0000001 fl s | 23,040.0000001 fl s | 26,880.0000002 fl s | 30,720.0000002 fl s | 34,560.0000002 fl s | 38,400.0000002 fl s | 42,240.0000002 fl s | 46,080.0000003 fl s | 49,920.0000003 fl s | 53,760.0000003 fl s | 57,600.0000003 fl s | 61,440.0000003 fl s | 65,280.0000004 fl s | 69,120.0000004 fl s | 72,960.0000004 fl s | 76,800.0000004 fl s | 80,640.0000005 fl s | 84,480.0000005 fl s | 88,320.0000005 fl s | 92,160.0000005 fl s | 96,000.0000005 fl s | 99,840.0000006 fl s | 103,680.0000006 fl s | 107,520.0000006 fl s | 111,360.0000006 fl s | 115,200.0000007 fl s | 119,040.0000007 fl s | 122,880.0000007 fl s | 126,720.0000007 fl s | 130,560.0000007 fl s | 134,400.0000008 fl s | 138,240.0000008 fl s | 142,080.0000008 fl s | 145,920.0000008 fl s | 149,760.0000008 fl s | 153,600.0000009 fl s | 157,440.0000009 fl s | 161,280.0000009 fl s | 165,120.0000009 fl s | 168,960.0000010 fl s | 172,800.0000010 fl s | 176,640.0000010 fl s | 180,480.0000010 fl s | 184,320.0000010 fl s | 188,160.0000011 fl s | 192,000.0000011 fl s | 195,840.0000011 fl s | 199,680.0000011 fl s | 203,520.0000012 fl s | 207,360.0000012 fl s | 211,200.0000012 fl s | 215,040.0000012 fl s | 218,880.0000012 fl s | 222,720.0000013 fl s | 226,560.0000013 fl s | 230,400.0000013 fl s | 234,240.0000013 fl s | 238,080.0000013 fl s | 241,920.0000014 fl s | 245,760.0000014 fl s | 249,600.0000014 fl s | 253,440.0000014 fl s | 257,280.0000015 fl s | 261,120.0000015 fl s | 264,960.0000015 fl s | 268,800.0000015 fl s | 272,640.0000015 fl s | 276,480.0000016 fl s | 280,320.0000016 fl s | 284,160.0000016 fl s | 288,000.0000016 fl s | 291,840.0000016 fl s | 295,680.0000017 fl s | 299,520.0000017 fl s | 303,360.0000017 fl s | 307,200.0000017 fl s | 311,040.0000018 fl s | 314,880.0000018 fl s | 318,720.0000018 fl s | 322,560.0000018 fl s | 326,400.0000018 fl s | 330,240.0000019 fl s | 334,080.0000019 fl s | 337,920.0000019 fl s | 341,760.0000019 fl s | 345,600.0000020 fl s | 349,440.0000020 fl s | 353,280.0000020 fl s | 357,120.0000020 fl s | 360,960.0000020 fl s | 364,800.0000021 fl s | 368,640.0000021 fl s | 372,480.0000021 fl s | 376,320.0000021 fl s | 380,160.0000021 fl s | 384,000.0000022 fl s |
The imperial (UK) gallon, now defined as exactly 4.54609 litres (about 277.42 cubic inches), is used in some Commonwealth countries and was originally based on the volume of 10 pounds (approximately 4.54 kg) of water at 62 °F (17 °C). The imperial fluid ounce is defined as 1⁄160 of an imperial gallon; there are four quarts in a gallon, two pints in a quart, and 20 Imperial fluid ounces in an imperial pint.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| imperial gallon | gal (imp) | ≡ 4.54609 L | ≡ 4.54609×10−3 m3 | Imperial/US |
| imperial gallons | fluid scruples | imperial gallons | fluid scruples |
|---|---|---|---|
| 1 | = 3840.0000000216 | 6 | = 23040.00000013 |
| 2 | = 7680.0000000432 | 7 | = 26880.000000151 |
| 3 | = 11520.000000065 | 8 | = 30720.000000173 |
| 4 | = 15360.000000086 | 9 | = 34560.000000195 |
| 5 | = 19200.000000108 | 10 | = 38400.000000216 |
The fluid scruple is 1⁄24 fluid ounce, 1⁄3 fluid dram, 20 minims, or 1⁄4 teaspoon, or 1 saltspoon. It is therefore equal to 1.23 milliliters.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| fluid scruple | fl s | ≡ 1⁄24 fl oz (imp) | = 1.18387760416×10−6 m3 | Imperial/US |
| fluid scruples | imperial gallons | fluid scruples | imperial gallons |
|---|---|---|---|
| 1 | = 0.0002604166666652 | 6 | = 0.0015624999999912 |
| 2 | = 0.0005208333333304 | 7 | = 0.0018229166666564 |
| 3 | = 0.0007812499999956 | 8 | = 0.0020833333333216 |
| 4 | = 0.0010416666666608 | 9 | = 0.0023437499999868 |
| 5 | = 0.001302083333326 | 10 | = 0.002604166666652 |
| imperial gallons | fluid scruples |
|---|---|
| 1 | = 3,840.0000000 |
| 0.0002604 | = 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 …) |