| drop (metric) | 1 drop (metric) | 2 drop (metric) | 3 drop (metric) | 4 drop (metric) | 5 drop (metric) | 6 drop (metric) | 7 drop (metric) | 8 drop (metric) | 9 drop (metric) | 10 drop (metric) | 11 drop (metric) | 12 drop (metric) | 13 drop (metric) | 14 drop (metric) | 15 drop (metric) | 16 drop (metric) | 17 drop (metric) | 18 drop (metric) | 19 drop (metric) | 20 drop (metric) | 21 drop (metric) | 22 drop (metric) | 23 drop (metric) | 24 drop (metric) | 25 drop (metric) | 26 drop (metric) | 27 drop (metric) | 28 drop (metric) | 29 drop (metric) | 30 drop (metric) | 31 drop (metric) | 32 drop (metric) | 33 drop (metric) | 34 drop (metric) | 35 drop (metric) | 36 drop (metric) | 37 drop (metric) | 38 drop (metric) | 39 drop (metric) | 40 drop (metric) | 41 drop (metric) | 42 drop (metric) | 43 drop (metric) | 44 drop (metric) | 45 drop (metric) | 46 drop (metric) | 47 drop (metric) | 48 drop (metric) | 49 drop (metric) | 50 drop (metric) | 51 drop (metric) | 52 drop (metric) | 53 drop (metric) | 54 drop (metric) | 55 drop (metric) | 56 drop (metric) | 57 drop (metric) | 58 drop (metric) | 59 drop (metric) | 60 drop (metric) | 61 drop (metric) | 62 drop (metric) | 63 drop (metric) | 64 drop (metric) | 65 drop (metric) | 66 drop (metric) | 67 drop (metric) | 68 drop (metric) | 69 drop (metric) | 70 drop (metric) | 71 drop (metric) | 72 drop (metric) | 73 drop (metric) | 74 drop (metric) | 75 drop (metric) | 76 drop (metric) | 77 drop (metric) | 78 drop (metric) | 79 drop (metric) | 80 drop (metric) | 81 drop (metric) | 82 drop (metric) | 83 drop (metric) | 84 drop (metric) | 85 drop (metric) | 86 drop (metric) | 87 drop (metric) | 88 drop (metric) | 89 drop (metric) | 90 drop (metric) | 91 drop (metric) | 92 drop (metric) | 93 drop (metric) | 94 drop (metric) | 95 drop (metric) | 96 drop (metric) | 97 drop (metric) | 98 drop (metric) | 99 drop (metric) | 100 drop (metric) |
| pipe | 1.048301795072 × 10-7 pipe | 2.096603590144 × 10-7 pipe | 3.1449053852161 × 10-7 pipe | 4.1932071802881 × 10-7 pipe | 5.2415089753601 × 10-7 pipe | 6.2898107704321 × 10-7 pipe | 7.3381125655041 × 10-7 pipe | 8.3864143605761 × 10-7 pipe | 9.4347161556482 × 10-7 pipe | 1.048301795072 × 10-6 pipe | 1.1531319745792 × 10-6 pipe | 1.2579621540864 × 10-6 pipe | 1.3627923335936 × 10-6 pipe | 1.4676225131008 × 10-6 pipe | 1.572452692608 × 10-6 pipe | 1.6772828721152 × 10-6 pipe | 1.7821130516224 × 10-6 pipe | 1.8869432311296 × 10-6 pipe | 1.9917734106368 × 10-6 pipe | 2.096603590144 × 10-6 pipe | 2.2014337696512 × 10-6 pipe | 2.3062639491584 × 10-6 pipe | 2.4110941286656 × 10-6 pipe | 2.5159243081728 × 10-6 pipe | 2.62075448768 × 10-6 pipe | 2.7255846671872 × 10-6 pipe | 2.8304148466944 × 10-6 pipe | 2.9352450262016 × 10-6 pipe | 3.0400752057089 × 10-6 pipe | 3.1449053852161 × 10-6 pipe | 3.2497355647233 × 10-6 pipe | 3.3545657442305 × 10-6 pipe | 3.4593959237377 × 10-6 pipe | 3.5642261032449 × 10-6 pipe | 3.6690562827521 × 10-6 pipe | 3.7738864622593 × 10-6 pipe | 3.8787166417665 × 10-6 pipe | 3.9835468212737 × 10-6 pipe | 4.0883770007809 × 10-6 pipe | 4.1932071802881 × 10-6 pipe | 4.2980373597953 × 10-6 pipe | 4.4028675393025 × 10-6 pipe | 4.5076977188097 × 10-6 pipe | 4.6125278983169 × 10-6 pipe | 4.7173580778241 × 10-6 pipe | 4.8221882573313 × 10-6 pipe | 4.9270184368385 × 10-6 pipe | 5.0318486163457 × 10-6 pipe | 5.1366787958529 × 10-6 pipe | 5.2415089753601 × 10-6 pipe | 5.3463391548673 × 10-6 pipe | 5.4511693343745 × 10-6 pipe | 5.5559995138817 × 10-6 pipe | 5.6608296933889 × 10-6 pipe | 5.7656598728961 × 10-6 pipe | 5.8704900524033 × 10-6 pipe | 5.9753202319105 × 10-6 pipe | 6.0801504114177 × 10-6 pipe | 6.1849805909249 × 10-6 pipe | 6.2898107704321 × 10-6 pipe | 6.3946409499393 × 10-6 pipe | 6.4994711294465 × 10-6 pipe | 6.6043013089537 × 10-6 pipe | 6.7091314884609 × 10-6 pipe | 6.8139616679681 × 10-6 pipe | 6.9187918474753 × 10-6 pipe | 7.0236220269825 × 10-6 pipe | 7.1284522064897 × 10-6 pipe | 7.2332823859969 × 10-6 pipe | 7.3381125655041 × 10-6 pipe | 7.4429427450113 × 10-6 pipe | 7.5477729245185 × 10-6 pipe | 7.6526031040257 × 10-6 pipe | 7.7574332835329 × 10-6 pipe | 7.8622634630401 × 10-6 pipe | 7.9670936425473 × 10-6 pipe | 8.0719238220545 × 10-6 pipe | 8.1767540015617 × 10-6 pipe | 8.2815841810689 × 10-6 pipe | 8.3864143605761 × 10-6 pipe | 8.4912445400833 × 10-6 pipe | 8.5960747195905 × 10-6 pipe | 8.7009048990977 × 10-6 pipe | 8.8057350786049 × 10-6 pipe | 8.9105652581121 × 10-6 pipe | 9.0153954376194 × 10-6 pipe | 9.1202256171266 × 10-6 pipe | 9.2250557966338 × 10-6 pipe | 9.329885976141 × 10-6 pipe | 9.4347161556482 × 10-6 pipe | 9.5395463351554 × 10-6 pipe | 9.6443765146626 × 10-6 pipe | 9.7492066941698 × 10-6 pipe | 9.854036873677 × 10-6 pipe | 9.9588670531842 × 10-6 pipe | 1.0063697232691 × 10-5 pipe | 1.0168527412199 × 10-5 pipe | 1.0273357591706 × 10-5 pipe | 1.0378187771213 × 10-5 pipe | 1.048301795072 × 10-5 pipe |
The drop is an approximated unit of measure of volume, the amount dispensed as one drop from a dropper or drip chamber. It is often used in giving quantities of liquid drugs to patients, and occasionally in cooking.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| drop (metric) | ≡ 1⁄20 mL | = 50.0×10−9 m3 | Imperial/US |
| drops (metric) | pipes | drops (metric) | pipes |
|---|---|---|---|
| 1 | = 1.048301795072E-7 | 6 | = 6.2898107704321E-7 |
| 2 | = 2.096603590144E-7 | 7 | = 7.3381125655041E-7 |
| 3 | = 3.1449053852161E-7 | 8 | = 8.3864143605761E-7 |
| 4 | = 4.1932071802881E-7 | 9 | = 9.4347161556482E-7 |
| 5 | = 5.2415089753601E-7 | 10 | = 1.048301795072E-6 |
The pipe was a measure of liquid volume equalling two hogsheads. This equated to 108 imperial gallons (490 l) for ale or 126 imperial gallons (570 l) for wine (also known as a butt).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| pipe | ≡ 126 gal (wine) | = 0.476961884784 m3 | Imperial/US |
| pipes | drops (metric) | pipes | drops (metric) |
|---|---|---|---|
| 1 | = 9539237.69568 | 6 | = 57235426.17408 |
| 2 | = 19078475.39136 | 7 | = 66774663.86976 |
| 3 | = 28617713.08704 | 8 | = 76313901.56544 |
| 4 | = 38156950.78272 | 9 | = 85853139.26112 |
| 5 | = 47696188.4784 | 10 | = 95392376.9568 |
| drops (metric) | pipes |
|---|---|
| 1 | = 1.048301795072 × 10-7 |
| 9,539,237.69568 | = 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 …) |