| mile (US Survey) | 1 mi (US) | 2 mi (US) | 3 mi (US) | 4 mi (US) | 5 mi (US) | 6 mi (US) | 7 mi (US) | 8 mi (US) | 9 mi (US) | 10 mi (US) | 11 mi (US) | 12 mi (US) | 13 mi (US) | 14 mi (US) | 15 mi (US) | 16 mi (US) | 17 mi (US) | 18 mi (US) | 19 mi (US) | 20 mi (US) | 21 mi (US) | 22 mi (US) | 23 mi (US) | 24 mi (US) | 25 mi (US) | 26 mi (US) | 27 mi (US) | 28 mi (US) | 29 mi (US) | 30 mi (US) | 31 mi (US) | 32 mi (US) | 33 mi (US) | 34 mi (US) | 35 mi (US) | 36 mi (US) | 37 mi (US) | 38 mi (US) | 39 mi (US) | 40 mi (US) | 41 mi (US) | 42 mi (US) | 43 mi (US) | 44 mi (US) | 45 mi (US) | 46 mi (US) | 47 mi (US) | 48 mi (US) | 49 mi (US) | 50 mi (US) | 51 mi (US) | 52 mi (US) | 53 mi (US) | 54 mi (US) | 55 mi (US) | 56 mi (US) | 57 mi (US) | 58 mi (US) | 59 mi (US) | 60 mi (US) | 61 mi (US) | 62 mi (US) | 63 mi (US) | 64 mi (US) | 65 mi (US) | 66 mi (US) | 67 mi (US) | 68 mi (US) | 69 mi (US) | 70 mi (US) | 71 mi (US) | 72 mi (US) | 73 mi (US) | 74 mi (US) | 75 mi (US) | 76 mi (US) | 77 mi (US) | 78 mi (US) | 79 mi (US) | 80 mi (US) | 81 mi (US) | 82 mi (US) | 83 mi (US) | 84 mi (US) | 85 mi (US) | 86 mi (US) | 87 mi (US) | 88 mi (US) | 89 mi (US) | 90 mi (US) | 91 mi (US) | 92 mi (US) | 93 mi (US) | 94 mi (US) | 95 mi (US) | 96 mi (US) | 97 mi (US) | 98 mi (US) | 99 mi (US) | 100 mi (US) |
| french; charriere | 4,828,041.657 F | 9,656,083.314 F | 14,484,124.971 F | 19,312,166.628 F | 24,140,208.285 F | 28,968,249.942 F | 33,796,291.599 F | 38,624,333.256 F | 43,452,374.913 F | 48,280,416.57 F | 53,108,458.227 F | 57,936,499.884 F | 62,764,541.541 F | 67,592,583.198 F | 72,420,624.855 F | 77,248,666.512 F | 82,076,708.169 F | 86,904,749.826 F | 91,732,791.483 F | 96,560,833.14 F | 101,388,874.797 F | 106,216,916.454 F | 111,044,958.111 F | 115,872,999.768 F | 120,701,041.425 F | 125,529,083.082 F | 130,357,124.739 F | 135,185,166.396 F | 140,013,208.053 F | 144,841,249.71 F | 149,669,291.367 F | 154,497,333.024 F | 159,325,374.681 F | 164,153,416.338 F | 168,981,457.995 F | 173,809,499.652 F | 178,637,541.309 F | 183,465,582.966 F | 188,293,624.623 F | 193,121,666.28 F | 197,949,707.937 F | 202,777,749.594 F | 207,605,791.251 F | 212,433,832.908 F | 217,261,874.565 F | 222,089,916.222 F | 226,917,957.879 F | 231,745,999.536 F | 236,574,041.193 F | 241,402,082.85 F | 246,230,124.507 F | 251,058,166.164 F | 255,886,207.821 F | 260,714,249.478 F | 265,542,291.135 F | 270,370,332.792 F | 275,198,374.449 F | 280,026,416.106 F | 284,854,457.763 F | 289,682,499.42 F | 294,510,541.077 F | 299,338,582.734 F | 304,166,624.391 F | 308,994,666.048 F | 313,822,707.705 F | 318,650,749.362 F | 323,478,791.019 F | 328,306,832.676 F | 333,134,874.333 F | 337,962,915.99 F | 342,790,957.647 F | 347,618,999.304 F | 352,447,040.961 F | 357,275,082.618 F | 362,103,124.275 F | 366,931,165.932 F | 371,759,207.589 F | 376,587,249.246 F | 381,415,290.903 F | 386,243,332.56 F | 391,071,374.217 F | 395,899,415.874 F | 400,727,457.531 F | 405,555,499.188 F | 410,383,540.845 F | 415,211,582.502 F | 420,039,624.159 F | 424,867,665.816 F | 429,695,707.473 F | 434,523,749.13 F | 439,351,790.787 F | 444,179,832.444 F | 449,007,874.101 F | 453,835,915.758 F | 458,663,957.415 F | 463,491,999.072 F | 468,320,040.729 F | 473,148,082.386 F | 477,976,124.043 F | 482,804,165.7 F |
≡ 5280 US Survey feet ≡ (5280 × 1200⁄3937) m
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| mile (US Survey) | mi (US) | ≡ 5280 US Survey feet ≡ (5280 × 1200⁄3937) m | ≈ 1609.347219 m | Imperial/US |
| miles (US Survey) | french; charriere | miles (US Survey) | french; charriere |
|---|---|---|---|
| 1 | ≈ 4828041.657 | 4 | ≈ 19312166.628 |
| 1.5 | ≈ 7242062.4855 | 4.5 | ≈ 21726187.4565 |
| 2 | ≈ 9656083.314 | 5 | ≈ 24140208.285 |
| 2.5 | ≈ 12070104.1425 | 5.5 | ≈ 26554229.1135 |
| 3 | ≈ 14484124.971 | 6 | ≈ 28968249.942 |
The French scale or French gauge system is commonly used to measure the size of a catheter. It is most often abbreviated as Fr, but can often be seen abbreviated as Fg, Ga, FR or F. It may also be abbreviated as CH or Ch (for Charrière, its inventor).
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| french; charriere | F | ≡ 1⁄3 mm | = 0.3×10−3 m | Other (Length) |
| french; charriere | miles (US Survey) | french; charriere | miles (US Survey) |
|---|---|---|---|
| 1 | ≈ 2.0712331645899E-7 | 4 | ≈ 8.2849326583596E-7 |
| 1.5 | ≈ 3.1068497468849E-7 | 4.5 | ≈ 9.3205492406546E-7 |
| 2 | ≈ 4.1424663291798E-7 | 5 | ≈ 1.035616582295E-6 |
| 2.5 | ≈ 5.1780829114748E-7 | 5.5 | ≈ 1.1391782405244E-6 |
| 3 | ≈ 6.2136994937697E-7 | 6 | ≈ 1.2427398987539E-6 |
| miles (US Survey) | french; charriere |
|---|---|
| 1 | ≈ 4,828,041.657 |
| 2.0712331645899 × 10-7 | ≈ 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 …) |