chain | 1 ch | 2 ch | 3 ch | 4 ch | 5 ch | 6 ch | 7 ch | 8 ch | 9 ch | 10 ch | 11 ch | 12 ch | 13 ch | 14 ch | 15 ch | 16 ch | 17 ch | 18 ch | 19 ch | 20 ch | 21 ch | 22 ch | 23 ch | 24 ch | 25 ch | 26 ch | 27 ch | 28 ch | 29 ch | 30 ch | 31 ch | 32 ch | 33 ch | 34 ch | 35 ch | 36 ch | 37 ch | 38 ch | 39 ch | 40 ch | 41 ch | 42 ch | 43 ch | 44 ch | 45 ch | 46 ch | 47 ch | 48 ch | 49 ch | 50 ch | 51 ch | 52 ch | 53 ch | 54 ch | 55 ch | 56 ch | 57 ch | 58 ch | 59 ch | 60 ch | 61 ch | 62 ch | 63 ch | 64 ch | 65 ch | 66 ch | 67 ch | 68 ch | 69 ch | 70 ch | 71 ch | 72 ch | 73 ch | 74 ch | 75 ch | 76 ch | 77 ch | 78 ch | 79 ch | 80 ch | 81 ch | 82 ch | 83 ch | 84 ch | 85 ch | 86 ch | 87 ch | 88 ch | 89 ch | 90 ch | 91 ch | 92 ch | 93 ch | 94 ch | 95 ch | 96 ch | 97 ch | 98 ch | 99 ch | 100 ch |
picometer | 20 116 840 000 000 pm | 40 233 680 000 000 pm | 60 350 520 000 000 pm | 80 467 360 000 000 pm | 1.005842 × 1014 pm | 1.2070104 × 1014 pm | 1.4081788 × 1014 pm | 1.6093472 × 1014 pm | 1.8105156 × 1014 pm | 2.011684 × 1014 pm | 2.2128524 × 1014 pm | 2.4140208 × 1014 pm | 2.6151892 × 1014 pm | 2.8163576 × 1014 pm | 3.017526 × 1014 pm | 3.2186944 × 1014 pm | 3.4198628 × 1014 pm | 3.6210312 × 1014 pm | 3.8221996 × 1014 pm | 4.023368 × 1014 pm | 4.2245364 × 1014 pm | 4.4257048 × 1014 pm | 4.6268732 × 1014 pm | 4.8280416 × 1014 pm | 5.02921 × 1014 pm | 5.2303784 × 1014 pm | 5.4315468 × 1014 pm | 5.6327152 × 1014 pm | 5.8338836 × 1014 pm | 6.035052 × 1014 pm | 6.2362204 × 1014 pm | 6.4373888 × 1014 pm | 6.6385572 × 1014 pm | 6.8397256 × 1014 pm | 7.040894 × 1014 pm | 7.2420624 × 1014 pm | 7.4432308 × 1014 pm | 7.6443992 × 1014 pm | 7.8455676 × 1014 pm | 8.046736 × 1014 pm | 8.2479044 × 1014 pm | 8.4490728 × 1014 pm | 8.6502412 × 1014 pm | 8.8514096 × 1014 pm | 9.052578 × 1014 pm | 9.2537464 × 1014 pm | 9.4549148 × 1014 pm | 9.6560832 × 1014 pm | 9.8572516 × 1014 pm | 1.005842 × 1015 pm | 1.02595884 × 1015 pm | 1.04607568 × 1015 pm | 1.06619252 × 1015 pm | 1.08630936 × 1015 pm | 1.1064262 × 1015 pm | 1.12654304 × 1015 pm | 1.14665988 × 1015 pm | 1.16677672 × 1015 pm | 1.18689356 × 1015 pm | 1.2070104 × 1015 pm | 1.22712724 × 1015 pm | 1.24724408 × 1015 pm | 1.26736092 × 1015 pm | 1.28747776 × 1015 pm | 1.3075946 × 1015 pm | 1.32771144 × 1015 pm | 1.34782828 × 1015 pm | 1.36794512 × 1015 pm | 1.38806196 × 1015 pm | 1.4081788 × 1015 pm | 1.42829564 × 1015 pm | 1.44841248 × 1015 pm | 1.46852932 × 1015 pm | 1.48864616 × 1015 pm | 1.508763 × 1015 pm | 1.52887984 × 1015 pm | 1.54899668 × 1015 pm | 1.56911352 × 1015 pm | 1.58923036 × 1015 pm | 1.6093472 × 1015 pm | 1.62946404 × 1015 pm | 1.64958088 × 1015 pm | 1.66969772 × 1015 pm | 1.68981456 × 1015 pm | 1.7099314 × 1015 pm | 1.73004824 × 1015 pm | 1.75016508 × 1015 pm | 1.77028192 × 1015 pm | 1.79039876 × 1015 pm | 1.8105156 × 1015 pm | 1.83063244 × 1015 pm | 1.85074928 × 1015 pm | 1.87086612 × 1015 pm | 1.89098296 × 1015 pm | 1.9110998 × 1015 pm | 1.93121664 × 1015 pm | 1.95133348 × 1015 pm | 1.97145032 × 1015 pm | 1.99156716 × 1015 pm | 2.011684 × 1015 pm |
A chain is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods (20.1168 m). There are 10 chains in a furlong, and 80 chains in one statute mile. An acre is the area of 10 square chains (that is, an area of one chain by one furlong). The chain has been used for several centuries in Britain and in some other countries influenced by British practice.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
chain | ch | ≡ 66 ft (US) ≡ 4 rods | ≈ 20.11684 m | Imperial/US |
chains | picometers | chains | picometers |
---|---|---|---|
1 | ≈ 20116840000000 | 4 | ≈ 80467360000000 |
1.5 | ≈ 30175260000000 | 4.5 | ≈ 90525780000000 |
2 | ≈ 40233680000000 | 5 | ≈ 1.005842E+14 |
2.5 | ≈ 50292100000000 | 5.5 | ≈ 1.1064262E+14 |
3 | ≈ 60350520000000 | 6 | ≈ 1.2070104E+14 |
The picometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to 1×10−12 m, or one trillionth ( 1 / 1000000000000 ) of a metre, which is the SI base unit of length.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
picometer | pm | ≡ 1×10-12 m | ≡ 1×10-12 m | Metric system SI |
picometers | chains | picometers | chains |
---|---|---|---|
1 | ≈ 4.9709596537031E-14 | 4 | ≈ 1.9883838614812E-13 |
1.5 | ≈ 7.4564394805546E-14 | 4.5 | ≈ 2.2369318441664E-13 |
2 | ≈ 9.9419193074061E-14 | 5 | ≈ 2.4854798268515E-13 |
2.5 | ≈ 1.2427399134258E-13 | 5.5 | ≈ 2.7340278095367E-13 |
3 | ≈ 1.4912878961109E-13 | 6 | ≈ 2.9825757922218E-13 |
chains | picometers |
---|---|
1 | ≈ 20 116 840 000 000 |
4.9709596537031 × 10-14 | ≈ 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 …) |