foot | 1 ft | 2 ft | 3 ft | 4 ft | 5 ft | 6 ft | 7 ft | 8 ft | 9 ft | 10 ft | 11 ft | 12 ft | 13 ft | 14 ft | 15 ft | 16 ft | 17 ft | 18 ft | 19 ft | 20 ft | 21 ft | 22 ft | 23 ft | 24 ft | 25 ft | 26 ft | 27 ft | 28 ft | 29 ft | 30 ft | 31 ft | 32 ft | 33 ft | 34 ft | 35 ft | 36 ft | 37 ft | 38 ft | 39 ft | 40 ft | 41 ft | 42 ft | 43 ft | 44 ft | 45 ft | 46 ft | 47 ft | 48 ft | 49 ft | 50 ft | 51 ft | 52 ft | 53 ft | 54 ft | 55 ft | 56 ft | 57 ft | 58 ft | 59 ft | 60 ft | 61 ft | 62 ft | 63 ft | 64 ft | 65 ft | 66 ft | 67 ft | 68 ft | 69 ft | 70 ft | 71 ft | 72 ft | 73 ft | 74 ft | 75 ft | 76 ft | 77 ft | 78 ft | 79 ft | 80 ft | 81 ft | 82 ft | 83 ft | 84 ft | 85 ft | 86 ft | 87 ft | 88 ft | 89 ft | 90 ft | 91 ft | 92 ft | 93 ft | 94 ft | 95 ft | 96 ft | 97 ft | 98 ft | 99 ft | 100 ft |
zeptometer | 3.048 × 1020 zm | 6.096 × 1020 zm | 9.144 × 1020 zm | 1.2192 × 1021 zm | 1.524 × 1021 zm | 1.8288 × 1021 zm | 2.1336 × 1021 zm | 2.4384 × 1021 zm | 2.7432 × 1021 zm | 3.048 × 1021 zm | 3.3528 × 1021 zm | 3.6576 × 1021 zm | 3.9624 × 1021 zm | 4.2672 × 1021 zm | 4.572 × 1021 zm | 4.8768 × 1021 zm | 5.1816 × 1021 zm | 5.4864 × 1021 zm | 5.7912 × 1021 zm | 6.096 × 1021 zm | 6.4008 × 1021 zm | 6.7056 × 1021 zm | 7.0104 × 1021 zm | 7.3152 × 1021 zm | 7.62 × 1021 zm | 7.9248 × 1021 zm | 8.2296 × 1021 zm | 8.5344 × 1021 zm | 8.8392 × 1021 zm | 9.144 × 1021 zm | 9.4488 × 1021 zm | 9.7536 × 1021 zm | 1.00584 × 1022 zm | 1.03632 × 1022 zm | 1.0668 × 1022 zm | 1.09728 × 1022 zm | 1.12776 × 1022 zm | 1.15824 × 1022 zm | 1.18872 × 1022 zm | 1.2192 × 1022 zm | 1.24968 × 1022 zm | 1.28016 × 1022 zm | 1.31064 × 1022 zm | 1.34112 × 1022 zm | 1.3716 × 1022 zm | 1.40208 × 1022 zm | 1.43256 × 1022 zm | 1.46304 × 1022 zm | 1.49352 × 1022 zm | 1.524 × 1022 zm | 1.55448 × 1022 zm | 1.58496 × 1022 zm | 1.61544 × 1022 zm | 1.64592 × 1022 zm | 1.6764 × 1022 zm | 1.70688 × 1022 zm | 1.73736 × 1022 zm | 1.76784 × 1022 zm | 1.79832 × 1022 zm | 1.8288 × 1022 zm | 1.85928 × 1022 zm | 1.88976 × 1022 zm | 1.92024 × 1022 zm | 1.95072 × 1022 zm | 1.9812 × 1022 zm | 2.01168 × 1022 zm | 2.04216 × 1022 zm | 2.07264 × 1022 zm | 2.10312 × 1022 zm | 2.1336 × 1022 zm | 2.16408 × 1022 zm | 2.19456 × 1022 zm | 2.22504 × 1022 zm | 2.25552 × 1022 zm | 2.286 × 1022 zm | 2.31648 × 1022 zm | 2.34696 × 1022 zm | 2.37744 × 1022 zm | 2.40792 × 1022 zm | 2.4384 × 1022 zm | 2.46888 × 1022 zm | 2.49936 × 1022 zm | 2.52984 × 1022 zm | 2.56032 × 1022 zm | 2.5908 × 1022 zm | 2.62128 × 1022 zm | 2.65176 × 1022 zm | 2.68224 × 1022 zm | 2.71272 × 1022 zm | 2.7432 × 1022 zm | 2.77368 × 1022 zm | 2.80416 × 1022 zm | 2.83464 × 1022 zm | 2.86512 × 1022 zm | 2.8956 × 1022 zm | 2.92608 × 1022 zm | 2.95656 × 1022 zm | 2.98704 × 1022 zm | 3.01752 × 1022 zm | 3.048 × 1022 zm |
The foot (pl. feet; abbreviation: ft; symbol: ′, the prime symbol) is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly. In both systems, the foot comprises 12 inches and three feet compose a yard.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot | ft | ≡ 0.3048 m ≡ 1⁄3 yd ≡ 12 inches | ≡ 0.3048 m | Imperial/US |
feet | zeptometers | feet | zeptometers |
---|---|---|---|
1 | ≡ 3.048E+20 | 4 | ≡ 1.2192E+21 |
1.5 | ≡ 4.572E+20 | 4.5 | ≡ 1.3716E+21 |
2 | ≡ 6.096E+20 | 5 | ≡ 1.524E+21 |
2.5 | ≡ 7.62E+20 | 5.5 | ≡ 1.6764E+21 |
3 | ≡ 9.144E+20 | 6 | ≡ 1.8288E+21 |
An zeptometer is a unit of length, a combination of the metric prefix zepto (symbol z) and the SI unit of length meter (symbol m), equal to 10−21 meter or 1.0E-21 meter and its symbol is zm. Plural name is zeptometers.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
zeptometer | zm | ≡ 1×10-21 m | ≡ 1×10-21 m | Metric system SI |
zeptometers | feet | zeptometers | feet |
---|---|---|---|
1 | ≡ 3.2808398950131E-21 | 4 | ≡ 1.3123359580052E-20 |
1.5 | ≡ 4.9212598425197E-21 | 4.5 | ≡ 1.4763779527559E-20 |
2 | ≡ 6.5616797900262E-21 | 5 | ≡ 1.6404199475066E-20 |
2.5 | ≡ 8.2020997375328E-21 | 5.5 | ≡ 1.8044619422572E-20 |
3 | ≡ 9.8425196850394E-21 | 6 | ≡ 1.9685039370079E-20 |
feet | zeptometers |
---|---|
1 | ≡ 3.048 × 1020 |
3.2808398950131 × 10-21 | ≡ 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 …) |