league (land) | 1 lea | 2 lea | 3 lea | 4 lea | 5 lea | 6 lea | 7 lea | 8 lea | 9 lea | 10 lea | 11 lea | 12 lea | 13 lea | 14 lea | 15 lea | 16 lea | 17 lea | 18 lea | 19 lea | 20 lea | 21 lea | 22 lea | 23 lea | 24 lea | 25 lea | 26 lea | 27 lea | 28 lea | 29 lea | 30 lea | 31 lea | 32 lea | 33 lea | 34 lea | 35 lea | 36 lea | 37 lea | 38 lea | 39 lea | 40 lea | 41 lea | 42 lea | 43 lea | 44 lea | 45 lea | 46 lea | 47 lea | 48 lea | 49 lea | 50 lea | 51 lea | 52 lea | 53 lea | 54 lea | 55 lea | 56 lea | 57 lea | 58 lea | 59 lea | 60 lea | 61 lea | 62 lea | 63 lea | 64 lea | 65 lea | 66 lea | 67 lea | 68 lea | 69 lea | 70 lea | 71 lea | 72 lea | 73 lea | 74 lea | 75 lea | 76 lea | 77 lea | 78 lea | 79 lea | 80 lea | 81 lea | 82 lea | 83 lea | 84 lea | 85 lea | 86 lea | 87 lea | 88 lea | 89 lea | 90 lea | 91 lea | 92 lea | 93 lea | 94 lea | 95 lea | 96 lea | 97 lea | 98 lea | 99 lea | 100 lea |
micrometer | 4 828 000 000 μm | 9 656 000 000 μm | 14 484 000 000 μm | 19 312 000 000 μm | 24 140 000 000 μm | 28 968 000 000 μm | 33 796 000 000 μm | 38 624 000 000 μm | 43 452 000 000 μm | 48 280 000 000 μm | 53 108 000 000 μm | 57 936 000 000 μm | 62 764 000 000 μm | 67 592 000 000 μm | 72 420 000 000 μm | 77 248 000 000 μm | 82 076 000 000 μm | 86 904 000 000 μm | 91 732 000 000 μm | 96 560 000 000 μm | 101 388 000 000 μm | 106 216 000 000 μm | 111 044 000 000 μm | 115 872 000 000 μm | 120 700 000 000 μm | 125 528 000 000 μm | 130 356 000 000 μm | 135 184 000 000 μm | 140 012 000 000 μm | 144 840 000 000 μm | 149 668 000 000 μm | 154 496 000 000 μm | 159 324 000 000 μm | 164 152 000 000 μm | 168 980 000 000 μm | 173 808 000 000 μm | 178 636 000 000 μm | 183 464 000 000 μm | 188 292 000 000 μm | 193 120 000 000 μm | 197 948 000 000 μm | 202 776 000 000 μm | 207 604 000 000 μm | 212 432 000 000 μm | 217 260 000 000 μm | 222 088 000 000 μm | 226 916 000 000 μm | 231 744 000 000 μm | 236 572 000 000 μm | 241 400 000 000 μm | 246 228 000 000 μm | 251 056 000 000 μm | 255 884 000 000 μm | 260 712 000 000 μm | 265 540 000 000 μm | 270 368 000 000 μm | 275 196 000 000 μm | 280 024 000 000 μm | 284 852 000 000 μm | 289 680 000 000 μm | 294 508 000 000 μm | 299 336 000 000 μm | 304 164 000 000 μm | 308 992 000 000 μm | 313 820 000 000 μm | 318 648 000 000 μm | 323 476 000 000 μm | 328 304 000 000 μm | 333 132 000 000 μm | 337 960 000 000 μm | 342 788 000 000 μm | 347 616 000 000 μm | 352 444 000 000 μm | 357 272 000 000 μm | 362 100 000 000 μm | 366 928 000 000 μm | 371 756 000 000 μm | 376 584 000 000 μm | 381 412 000 000 μm | 386 240 000 000 μm | 391 068 000 000 μm | 395 896 000 000 μm | 400 724 000 000 μm | 405 552 000 000 μm | 410 380 000 000 μm | 415 208 000 000 μm | 420 036 000 000 μm | 424 864 000 000 μm | 429 692 000 000 μm | 434 520 000 000 μm | 439 348 000 000 μm | 444 176 000 000 μm | 449 004 000 000 μm | 453 832 000 000 μm | 458 660 000 000 μm | 463 488 000 000 μm | 468 316 000 000 μm | 473 144 000 000 μm | 477 972 000 000 μm | 482 800 000 000 μm |
A league is a unit of length (or, in various regions, area). It was common in Europe and Latin America, but is no longer an official unit in any nation. The word originally meant the distance a person could walk in an hour. Since the Middle Ages, many values have been specified in several countries.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
league (land) | lea | ≈ 1 hour walk, Currently defined in US as 3 Statute miles, but historically varied from 2 to 9 km | ≈ 4828 m | Imperial/US |
leagues (land) | micrometers | leagues (land) | micrometers |
---|---|---|---|
1 | = 4828000000 | 4 | = 19312000000 |
1.5 | = 7242000000 | 4.5 | = 21726000000 |
2 | = 9656000000 | 5 | = 24140000000 |
2.5 | = 12070000000 | 5.5 | = 26554000000 |
3 | = 14484000000 | 6 | = 28968000000 |
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling 1×10−6 of a metre (SI standard prefix "micro-" = 10−6); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
micrometer | μm | ≡ 1×10-6 m | ≡ 1×10-6 m | Metric system SI |
micrometers | leagues (land) | micrometers | leagues (land) |
---|---|---|---|
1 | = 2.0712510356255E-10 | 4 | = 8.2850041425021E-10 |
1.5 | = 3.1068765534383E-10 | 4.5 | = 9.3206296603148E-10 |
2 | = 4.142502071251E-10 | 5 | = 1.0356255178128E-9 |
2.5 | = 5.1781275890638E-10 | 5.5 | = 1.139188069594E-9 |
3 | = 6.2137531068766E-10 | 6 | = 1.2427506213753E-9 |
leagues (land) | micrometers |
---|---|
1 | = 4 828 000 000 |
2.0712510356255 × 10-10 | = 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 …) |