| |||

## Length | ||
---|---|---|

## Characteristic | ## angstrom | ## Notes | ||
---|---|---|---|---|

## Symbol | Å |
Use "A" for our conversion calculators. | ||

## Other Names | Ang, tenthmeter, tenthmetre | |||

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## angstrom-star | ## Notes | ||
---|---|---|---|---|

## Symbol | Å* | Use "A-star" for our conversion calculators. | ||

## Metric (SI) Equivalent |
1.00001495×10-10 meters | |||

## Standard Uncertainty | ± 9×10-17 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## arpent-length( Quebec survey unit ) |
## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |

## Characteristic | ## astronomical-unit | ## Notes | ||
---|---|---|---|---|

## Symbol | AU |
|||

## Other Name | UA | |||

## Metric (SI) Equivalent | ||||

## Standard Uncertainty | ||||

## Metric (SI) Dimensions | length |

## Characteristic | ## barleycorn | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | inch / 3 |

## Characteristic | ## baromil | ## Notes | ||
---|---|---|---|---|

## Other Name | barometer-mil | |||

## Metric (SI) Equivalent | ||||

## Metric (SI) Dimensions | length |

## Characteristic | ## Bohr-radius | ## Notes | ||
---|---|---|---|---|

## Symbol | a0 | Use "a-0" for our conversion calculators. | ||

## Other Names | Rb, atomic-unit-of-length, bohr, first-Bohr-radius | |||

## Metric (SI) Equivalent | 5.291772109×10-11 meters | |||

## Standard Uncertainty | ± 8×10-21 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## bolt( Used for measuring cloth ) | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 40 yards |

## Characteristic | ## cable-length | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | 219.456 meters |
This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 120 fathoms | |||

## Unit Group |

## Characteristic | ## cable-length-non-US-UK( Unit used outside the United States and the United Kingdom ) | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | 185.2 meters | This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | nautical-mile / 10 | |||

## Unit Group |

## Characteristic | ## cable-length-UK( Used in the United Kingdom ) | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | 185.3 meters | This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
nautical-mile-UK / 10 | |||

## Unit Group |

## Characteristic | ## cable-length-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Name | survey-cable-length | |||

## Metric (SI) Equivalent | 219.45643891 meters | This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | ||||

## Unit Group |

## Characteristic | ## caliber | ## Notes | ||
---|---|---|---|---|

## Other Name | calibre | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | inch / 100 |

## Characteristic | ## chain | ## Notes | ||
---|---|---|---|---|

## Symbol | ch |
|||

## Other Name | international-chain | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
100 links | |||

## Unit Group |

## Characteristic | ## chain-engineer | ## Notes | ||
---|---|---|---|---|

## Other Names | ch-eng, chain-ramsden | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 100 links-engineer | |||

## Unit Group |

## Characteristic | ## chain-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names | ch-US-survey, survey-chain, chain-surveyor, chain-gunter | |||

## Metric (SI) Equivalent |
This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 100 links-US-survey | |||

## Unit Group |

## Characteristic | ## classical-electron-radius | ## Notes | ||
---|---|---|---|---|

## Symbol | re | Use "r-e" for our conversion calculators. | ||

## Metric (SI) Equivalent |
2.8179403262×10-15 meters | |||

## Standard Uncertainty | ± 1.3×10-24 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## Compton-wavelength | ## Notes |
||
---|---|---|---|---|

## Symbol | λC |
Use "lambda-C" for our conversion calculators. | ||

## Metric (SI) Equivalent | 2.4263102387×10-12 meters | |||

## Standard Uncertainty | ± 7.3×10-22 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## cubit | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent |
This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 18 inches |

## Characteristic | ## ell | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 45 inches |

## Characteristic | ## fathom | ## Notes | ||
---|---|---|---|---|

## Symbol | fath | |||

## Other Name | international-fathom | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 2 yards | |||

## Unit Group |

## Characteristic | ## fathom-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names | fath-US-survey, survey-fathom | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | ||||

## Unit Group |

## Characteristic | ## fermi | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## foot | ## Notes | ||
---|---|---|---|---|

## Symbol | ft | |||

## Other Names | feet, ', international-foot | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
12 inches | |||

## Unit Group |

## Characteristic | ## foot-French-measure( Quebec survey unit ) | ## Notes | ||
---|---|---|---|---|

## Other Names | ft-French-measure, foot-Paris, Paris-foot, pied | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | 12.789 inches | |||

## Unit Group |

## Characteristic | ## foot-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names | ft-US-survey, survey-foot | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | (1200 / 3937) meters |
|||

## Unit Group |

## Characteristic | ## furlong | ## Notes | ||
---|---|---|---|---|

## Symbol | fur | |||

## Other Name |
international-furlong | |||

## Metric (SI) Equivalent | 201.168 meters | This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 660 feet |
|||

## Unit Group |

## Characteristic | ## furlong-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names | fur-US-survey, survey-furlong | |||

## Metric (SI) Equivalent | 201.16840234 meters | This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 660 feet-US-survey | |||

## Unit Group |

## Characteristic | ## hand | ## Notes | ||
---|---|---|---|---|

## Symbol | hd | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 4 inches |

## Characteristic | ## inch | ## Notes | ||
---|---|---|---|---|

## Symbol | in | |||

## Other Names | ", international-inch | |||

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length | |||

## Unit Group |

## Characteristic | ## inch-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names | in-US-survey, survey-inch | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | foot-US-survey / 12 | |||

## Unit Group |

## Characteristic | ## klick | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | 1000 meters | This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 1000 meters |

## Characteristic | ## lattice-parameter-of-silicon( Value in vacuum at 22.5 °C ) | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | 5.431020511×10-10 meters | |||

## Standard Uncertainty | ± 8.9×10-18 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## lattice-spacing-of-silicon( Value in vacuum at 22.5 °C ) | ## Notes | ||
---|---|---|---|---|

## Symbol | d220 | Use "d-220" for our conversion calculators. | ||

## Metric (SI) Equivalent | 1.920155716×10-10 meters | |||

## Standard Uncertainty | ± 3.2×10-18 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## league-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names | leag-US-survey, survey-league, statute-league | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | ||||

## Unit Group |

## Characteristic | ## light-year | ## Notes | ||
---|---|---|---|---|

## Symbol | ly | |||

## Other Names | lyr, ltyr | |||

## Metric (SI) Equivalent | ||||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |

## Characteristic | ## line-length | ## Notes | ||
---|---|---|---|---|

## Other Names | line, button | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. |
|||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
inch / 12 |

## Characteristic | ## link | ## Notes | ||
---|---|---|---|---|

## Symbol |
li | |||

## Other Names | lk, international-link, link-gunter-UK, link-surveyor-UK | "UK" indicates that this unit is used in the United Kingdom. | ||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 0.66 feet | |||

## Unit Group |

## Characteristic | ## link-engineer | ## Notes | ||
---|---|---|---|---|

## Other Names | li-eng, lk-eng, link-ramsden | |||

## Metric (SI) Equivalent |
This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | ||||

## Unit Group |

## Characteristic |
## link-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names | li-US-survey, lk-US-survey, survey-link, link-surveyor, link-gunter | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 0.66 feet-US-survey | |||

## Unit Group |

## Characteristic | ## meter | ## Notes | ||
---|---|---|---|---|

## Symbol | m | |||

## Other Name | metre | |||

## Metric (SI) Equivalent | meter is a metric unit (in fact, it is a base SI unit) | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## micron | ## Notes | ||
---|---|---|---|---|

## Symbol | μ | Use "mu" for our conversion calculators. | ||

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## mile | ## Notes | ||
---|---|---|---|---|

## Symbol | mi | |||

## Other Names | international-mile, land-mile | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 5280 feet | |||

## Unit Group |

## Characteristic | ## mile-US-survey( Used in the United States for some survey measurements ) |
## Notes | ||
---|---|---|---|---|

## Other Names | mi-US-survey, survey-mile, statute-mile | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | 5280 feet-US-survey | |||

## Unit Group |

## Characteristic | ## mil-length | ## Notes | ||
---|---|---|---|---|

## Other Names | thou, mil | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
inch / 1000 |

## Characteristic | ## muon-Compton-wavelength | ## Notes | ||
---|---|---|---|---|

## Symbol | λC,μ | Use "lambda-C-mu" for our conversion calculators. | ||

## Metric (SI) Equivalent |
1.17344411×10-14 meters | |||

## Standard Uncertainty | ± 2.6×10-22 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## nail | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | (9 / 4) inches |

## Characteristic | ## natural-unit-of-length |
## Notes | ||
---|---|---|---|---|

## Other Name | Compton-wavelength-over-2-pi | |||

## Metric (SI) Equivalent | 3.8615926796×10-13 meters | |||

## Standard Uncertainty | ± 1.2×10-22 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## nautical-league-UK( Used in the United Kingdom ) | ## Notes | ||
---|---|---|---|---|

## Other Names | nleag-UK, naut-leag-UK | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
||||

## Unit Group |

## Characteristic | ## nautical-mile | ## Notes | ||
---|---|---|---|---|

## Symbol | nmi | |||

## Other Name | naut-mi | |||

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length | |||

## Unit Group |

## Characteristic |
## nautical-mile-UK( Used in the United Kingdom ) | ## Notes | ||
---|---|---|---|---|

## Other Names | nmi-UK, naut-mi-UK | |||

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length | |||

## Unit Group |

## Characteristic | ## neutron-Compton-wavelength |
## Notes | ||
---|---|---|---|---|

## Symbol | λC,n |
Use "lambda-C-n" for our conversion calculators. | ||

## Metric (SI) Equivalent | 1.3195909058×10-15 meters | |||

## Standard Uncertainty | ± 7.5×10-25 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## palm | ## Notes | ||
---|---|---|---|---|

## Symbol | plm | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
3 inches |

## Characteristic | ## parsec | ## Notes | ||
---|---|---|---|---|

## Symbol |
pc | |||

## Metric (SI) Equivalent | ||||

## Metric (SI) Dimensions | length |

## Characteristic | ## perche-length( Quebec survey unit ) | ## Notes |
||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants |

## Characteristic | ## pica-computing |
## Notes | ||
---|---|---|---|---|

## Other Names | pica, Postscript-pica | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | ||||

## Unit Group |

## Characteristic | ## pica-printing | ## Notes | ||
---|---|---|---|---|

## Other Name | American-pica | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | ||||

## Unit Group |

## Characteristic | ## pica-tex | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 12 points-tex | |||

## Unit Group |

## Characteristic | ## Planck-length | ## Notes | ||
---|---|---|---|---|

## Symbol | lP | Use "l-P" for our conversion calculators. | ||

## Metric (SI) Equivalent | 1.616255×10-35 meters | |||

## Standard Uncertainty | ± 1.8×10-40 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## point-computing | ## Notes | ||
---|---|---|---|---|

## Symbol | pt | |||

## Other Names | point, PostScript-point | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | inch / 72 |
|||

## Unit Group |

## Characteristic | ## point-printing | ## Notes | ||
---|---|---|---|---|

## Other Names | pt-printing, American-point | |||

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length | |||

## Unit Group |

## Characteristic |
## point-tex | ## Notes | ||
---|---|---|---|---|

## Other Name |
pt-tex | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | inch / 72.27 | |||

## Unit Group |

## Characteristic | ## proton-Compton-wavelength | ## Notes | ||
---|---|---|---|---|

## Symbol | λC,p | Use "lambda-C-p" for our conversion calculators. | ||

## Metric (SI) Equivalent | 1.3214098554×10-15 meters | |||

## Standard Uncertainty | ± 4×10-25 meters | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## rod | ## Notes | ||
---|---|---|---|---|

## Symbol | rd | |||

## Other Names | international-rod, pole, international-pole, perch, international-perch | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 16.5 feet | |||

## Unit Group |

## Characteristic | ## rod-US-survey( Used in the United States for some survey measurements ) |
## Notes | ||
---|---|---|---|---|

## Other Names | rd-US-survey, survey-rod, survey-pole, survey-perch | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | 16.5 feet-US-survey | |||

## Unit Group |

## Characteristic | ## rope | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 20 feet |

## Characteristic | ## siriometer | ## Notes | ||
---|---|---|---|---|

## Other Name | siriometre | |||

## Metric (SI) Equivalent | ||||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 1×106 astronomical-units |

## Characteristic | ## siriusweit | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | ||||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 5 parsecs |

## Characteristic | ## skein | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | 109.728 meters |
This equivalent is calculated from exact values. | ||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 120 yards |

## Characteristic | ## span | ## Notes | ||
---|---|---|---|---|

## Symbol | sp | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants | 9 inches |

## Characteristic | ## spat-length | ## Notes | ||
---|---|---|---|---|

## Metric (SI) Equivalent | This equivalent is exact. | |||

## Metric (SI) Dimensions | length |

## Characteristic | ## tau-Compton-wavelength | ## Notes | ||
---|---|---|---|---|

## Symbol | λC,τ | Use "lambda-C-tau" for our conversion calculators. | ||

## Metric (SI) Equivalent | 6.97771×10-16 meters | |||

## Standard Uncertainty |
± 4.7×10-20 meters | |||

## Metric (SI) Dimensions |
length |

## Characteristic | ## yard |
## Notes | ||
---|---|---|---|---|

## Symbol | yd | |||

## Other Name | international-yard | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions | length | |||

## Description in Terms of Other Units and Constants |
3 feet | |||

## Unit Group |

## Characteristic | ## yard-US-survey( Used in the United States for some survey measurements ) | ## Notes | ||
---|---|---|---|---|

## Other Names |
yd-US-survey, survey-yard | |||

## Metric (SI) Equivalent | This equivalent is calculated from exact values. | |||

## Metric (SI) Dimensions |
length | |||

## Description in Terms of Other Units and Constants | ||||

## Unit Group |