| US teaspoon | 1 tsp(US) | 2 tsp(US) | 3 tsp(US) | 4 tsp(US) | 5 tsp(US) | 6 tsp(US) | 7 tsp(US) | 8 tsp(US) | 9 tsp(US) | 10 tsp(US) | 11 tsp(US) | 12 tsp(US) | 13 tsp(US) | 14 tsp(US) | 15 tsp(US) | 16 tsp(US) | 17 tsp(US) | 18 tsp(US) | 19 tsp(US) | 20 tsp(US) | 21 tsp(US) | 22 tsp(US) | 23 tsp(US) | 24 tsp(US) | 25 tsp(US) | 26 tsp(US) | 27 tsp(US) | 28 tsp(US) | 29 tsp(US) | 30 tsp(US) | 31 tsp(US) | 32 tsp(US) | 33 tsp(US) | 34 tsp(US) | 35 tsp(US) | 36 tsp(US) | 37 tsp(US) | 38 tsp(US) | 39 tsp(US) | 40 tsp(US) | 41 tsp(US) | 42 tsp(US) | 43 tsp(US) | 44 tsp(US) | 45 tsp(US) | 46 tsp(US) | 47 tsp(US) | 48 tsp(US) | 49 tsp(US) | 50 tsp(US) | 51 tsp(US) | 52 tsp(US) | 53 tsp(US) | 54 tsp(US) | 55 tsp(US) | 56 tsp(US) | 57 tsp(US) | 58 tsp(US) | 59 tsp(US) | 60 tsp(US) | 61 tsp(US) | 62 tsp(US) | 63 tsp(US) | 64 tsp(US) | 65 tsp(US) | 66 tsp(US) | 67 tsp(US) | 68 tsp(US) | 69 tsp(US) | 70 tsp(US) | 71 tsp(US) | 72 tsp(US) | 73 tsp(US) | 74 tsp(US) | 75 tsp(US) | 76 tsp(US) | 77 tsp(US) | 78 tsp(US) | 79 tsp(US) | 80 tsp(US) | 81 tsp(US) | 82 tsp(US) | 83 tsp(US) | 84 tsp(US) | 85 tsp(US) | 86 tsp(US) | 87 tsp(US) | 88 tsp(US) | 89 tsp(US) | 90 tsp(US) | 91 tsp(US) | 92 tsp(US) | 93 tsp(US) | 94 tsp(US) | 95 tsp(US) | 96 tsp(US) | 97 tsp(US) | 98 tsp(US) | 99 tsp(US) | 100 tsp(US) |
| pipe | 1.0333994708995 × 10-5 pipe | 2.0667989417989 × 10-5 pipe | 3.1001984126984 × 10-5 pipe | 4.1335978835979 × 10-5 pipe | 5.1669973544974 × 10-5 pipe | 6.2003968253968 × 10-5 pipe | 7.2337962962963 × 10-5 pipe | 8.2671957671958 × 10-5 pipe | 9.3005952380952 × 10-5 pipe | 0.0001033 pipe | 0.0001137 pipe | 0.0001240 pipe | 0.0001343 pipe | 0.0001447 pipe | 0.0001550 pipe | 0.0001653 pipe | 0.0001757 pipe | 0.0001860 pipe | 0.0001963 pipe | 0.0002067 pipe | 0.0002170 pipe | 0.0002273 pipe | 0.0002377 pipe | 0.0002480 pipe | 0.0002583 pipe | 0.0002687 pipe | 0.0002790 pipe | 0.0002894 pipe | 0.0002997 pipe | 0.0003100 pipe | 0.0003204 pipe | 0.0003307 pipe | 0.0003410 pipe | 0.0003514 pipe | 0.0003617 pipe | 0.0003720 pipe | 0.0003824 pipe | 0.0003927 pipe | 0.0004030 pipe | 0.0004134 pipe | 0.0004237 pipe | 0.0004340 pipe | 0.0004444 pipe | 0.0004547 pipe | 0.0004650 pipe | 0.0004754 pipe | 0.0004857 pipe | 0.0004960 pipe | 0.0005064 pipe | 0.0005167 pipe | 0.0005270 pipe | 0.0005374 pipe | 0.0005477 pipe | 0.0005580 pipe | 0.0005684 pipe | 0.0005787 pipe | 0.0005890 pipe | 0.0005994 pipe | 0.0006097 pipe | 0.0006200 pipe | 0.0006304 pipe | 0.0006407 pipe | 0.0006510 pipe | 0.0006614 pipe | 0.0006717 pipe | 0.0006820 pipe | 0.0006924 pipe | 0.0007027 pipe | 0.0007130 pipe | 0.0007234 pipe | 0.0007337 pipe | 0.0007440 pipe | 0.0007544 pipe | 0.0007647 pipe | 0.0007750 pipe | 0.0007854 pipe | 0.0007957 pipe | 0.0008061 pipe | 0.0008164 pipe | 0.0008267 pipe | 0.0008371 pipe | 0.0008474 pipe | 0.0008577 pipe | 0.0008681 pipe | 0.0008784 pipe | 0.0008887 pipe | 0.0008991 pipe | 0.0009094 pipe | 0.0009197 pipe | 0.0009301 pipe | 0.0009404 pipe | 0.0009507 pipe | 0.0009611 pipe | 0.0009714 pipe | 0.0009817 pipe | 0.0009921 pipe | 0.0010024 pipe | 0.0010127 pipe | 0.0010231 pipe | 0.0010334 pipe |
A teaspoon is an item of cutlery, a measuring instrument, of approximately 5ml, or a unit of measurement of volume (usually abbreviated tsp.).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| US teaspoon | tsp(US) | ≡ 1⁄6 US fl oz | = 4.92892159375×10−6 m3 | Imperial/US |
| US teaspoons | pipes | US teaspoons | pipes |
|---|---|---|---|
| 1 | = 1.0333994708995E-5 | 6 | = 6.2003968253968E-5 |
| 2 | = 2.0667989417989E-5 | 7 | = 7.2337962962963E-5 |
| 3 | = 3.1001984126984E-5 | 8 | = 8.2671957671958E-5 |
| 4 | = 4.1335978835979E-5 | 9 | = 9.3005952380952E-5 |
| 5 | = 5.1669973544974E-5 | 10 | = 0.00010333994708995 |
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 | US teaspoons | pipes | US teaspoons |
|---|---|---|---|
| 1 | = 96768 | 6 | = 580608 |
| 2 | = 193536 | 7 | = 677376 |
| 3 | = 290304 | 8 | = 774144 |
| 4 | = 387072 | 9 | = 870912 |
| 5 | = 483840 | 10 | = 967680 |
| US teaspoons | pipes |
|---|---|
| 1 | = 1.0333994708995 × 10-5 |
| 96 768 | = 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 …) |