| french; charriere | 1 F | 2 F | 3 F | 4 F | 5 F | 6 F | 7 F | 8 F | 9 F | 10 F | 11 F | 12 F | 13 F | 14 F | 15 F | 16 F | 17 F | 18 F | 19 F | 20 F | 21 F | 22 F | 23 F | 24 F | 25 F | 26 F | 27 F | 28 F | 29 F | 30 F | 31 F | 32 F | 33 F | 34 F | 35 F | 36 F | 37 F | 38 F | 39 F | 40 F | 41 F | 42 F | 43 F | 44 F | 45 F | 46 F | 47 F | 48 F | 49 F | 50 F | 51 F | 52 F | 53 F | 54 F | 55 F | 56 F | 57 F | 58 F | 59 F | 60 F | 61 F | 62 F | 63 F | 64 F | 65 F | 66 F | 67 F | 68 F | 69 F | 70 F | 71 F | 72 F | 73 F | 74 F | 75 F | 76 F | 77 F | 78 F | 79 F | 80 F | 81 F | 82 F | 83 F | 84 F | 85 F | 86 F | 87 F | 88 F | 89 F | 90 F | 91 F | 92 F | 93 F | 94 F | 95 F | 96 F | 97 F | 98 F | 99 F | 100 F |
| yard | 0.0003645 yd | 0.0007291 yd | 0.0010936 yd | 0.0014582 yd | 0.0018227 yd | 0.0021872 yd | 0.0025518 yd | 0.0029163 yd | 0.0032808 yd | 0.0036454 yd | 0.0040099 yd | 0.0043745 yd | 0.0047390 yd | 0.0051035 yd | 0.0054681 yd | 0.0058326 yd | 0.0061971 yd | 0.0065617 yd | 0.0069262 yd | 0.0072908 yd | 0.0076553 yd | 0.0080198 yd | 0.0083844 yd | 0.0087489 yd | 0.0091134 yd | 0.0094780 yd | 0.0098425 yd | 0.0102071 yd | 0.0105716 yd | 0.0109361 yd | 0.0113007 yd | 0.0116652 yd | 0.0120297 yd | 0.0123943 yd | 0.0127588 yd | 0.0131234 yd | 0.0134879 yd | 0.0138524 yd | 0.0142170 yd | 0.0145815 yd | 0.0149460 yd | 0.0153106 yd | 0.0156751 yd | 0.0160397 yd | 0.0164042 yd | 0.0167687 yd | 0.0171333 yd | 0.0174978 yd | 0.0178624 yd | 0.0182269 yd | 0.0185914 yd | 0.0189560 yd | 0.0193205 yd | 0.0196850 yd | 0.0200496 yd | 0.0204141 yd | 0.0207787 yd | 0.0211432 yd | 0.0215077 yd | 0.0218723 yd | 0.0222368 yd | 0.0226013 yd | 0.0229659 yd | 0.0233304 yd | 0.0236950 yd | 0.0240595 yd | 0.0244240 yd | 0.0247886 yd | 0.0251531 yd | 0.0255176 yd | 0.0258822 yd | 0.0262467 yd | 0.0266113 yd | 0.0269758 yd | 0.0273403 yd | 0.0277049 yd | 0.0280694 yd | 0.0284339 yd | 0.0287985 yd | 0.0291630 yd | 0.0295276 yd | 0.0298921 yd | 0.0302566 yd | 0.0306212 yd | 0.0309857 yd | 0.0313502 yd | 0.0317148 yd | 0.0320793 yd | 0.0324439 yd | 0.0328084 yd | 0.0331729 yd | 0.0335375 yd | 0.0339020 yd | 0.0342666 yd | 0.0346311 yd | 0.0349956 yd | 0.0353602 yd | 0.0357247 yd | 0.0360892 yd | 0.0364538 yd |
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 | yards | french; charriere | yards |
|---|---|---|---|
| 1 | = 0.00036453776611257 | 4 | = 0.0014581510644503 |
| 1.5 | = 0.00054680664916885 | 4.5 | = 0.0016404199475066 |
| 2 | = 0.00072907553222514 | 5 | = 0.0018226888305628 |
| 2.5 | = 0.00091134441528142 | 5.5 | = 0.0020049577136191 |
| 3 | = 0.0010936132983377 | 6 | = 0.0021872265966754 |
The yard (abbreviation: yd) is an English unit of length, in both the British imperial and US customary systems of measurement, that comprises 3 feet or 36 inches.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| yard | yd | ≡ 0.9144 m ≡ 3 ft ≡ 36 in | ≡ 0.9144 m | Imperial/US |
| yards | french; charriere | yards | french; charriere |
|---|---|---|---|
| 1 | = 2743.2 | 4 | = 10972.8 |
| 1.5 | = 4114.8 | 4.5 | = 12344.4 |
| 2 | = 5486.4 | 5 | = 13716 |
| 2.5 | = 6858 | 5.5 | = 15087.6 |
| 3 | = 8229.6 | 6 | = 16459.2 |
| french; charriere | yards |
|---|---|
| 1 | = 0.0003645 |
| 2,743.2 | = 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 …) |