point (Didot; European) | 1 pt | 2 pt | 3 pt | 4 pt | 5 pt | 6 pt | 7 pt | 8 pt | 9 pt | 10 pt | 11 pt | 12 pt | 13 pt | 14 pt | 15 pt | 16 pt | 17 pt | 18 pt | 19 pt | 20 pt | 21 pt | 22 pt | 23 pt | 24 pt | 25 pt | 26 pt | 27 pt | 28 pt | 29 pt | 30 pt | 31 pt | 32 pt | 33 pt | 34 pt | 35 pt | 36 pt | 37 pt | 38 pt | 39 pt | 40 pt | 41 pt | 42 pt | 43 pt | 44 pt | 45 pt | 46 pt | 47 pt | 48 pt | 49 pt | 50 pt | 51 pt | 52 pt | 53 pt | 54 pt | 55 pt | 56 pt | 57 pt | 58 pt | 59 pt | 60 pt | 61 pt | 62 pt | 63 pt | 64 pt | 65 pt | 66 pt | 67 pt | 68 pt | 69 pt | 70 pt | 71 pt | 72 pt | 73 pt | 74 pt | 75 pt | 76 pt | 77 pt | 78 pt | 79 pt | 80 pt | 81 pt | 82 pt | 83 pt | 84 pt | 85 pt | 86 pt | 87 pt | 88 pt | 89 pt | 90 pt | 91 pt | 92 pt | 93 pt | 94 pt | 95 pt | 96 pt | 97 pt | 98 pt | 99 pt | 100 pt |
fermi | 375 939 850 000 fm | 751 879 700 000 fm | 1 127 819 550 000 fm | 1 503 759 400 000 fm | 1 879 699 250 000 fm | 2 255 639 100 000 fm | 2 631 578 950 000 fm | 3 007 518 800 000 fm | 3 383 458 650 000 fm | 3 759 398 500 000 fm | 4 135 338 350 000 fm | 4 511 278 200 000 fm | 4 887 218 050 000 fm | 5 263 157 900 000 fm | 5 639 097 750 000 fm | 6 015 037 600 000 fm | 6 390 977 450 000 fm | 6 766 917 300 000 fm | 7 142 857 150 000 fm | 7 518 797 000 000 fm | 7 894 736 850 000 fm | 8 270 676 700 000 fm | 8 646 616 550 000 fm | 9 022 556 400 000 fm | 9 398 496 250 000 fm | 9 774 436 100 000 fm | 10 150 375 950 000 fm | 10 526 315 800 000 fm | 10 902 255 650 000 fm | 11 278 195 500 000 fm | 11 654 135 350 000 fm | 12 030 075 200 000 fm | 12 406 015 050 000 fm | 12 781 954 900 000 fm | 13 157 894 750 000 fm | 13 533 834 600 000 fm | 13 909 774 450 000 fm | 14 285 714 300 000 fm | 14 661 654 150 000 fm | 15 037 594 000 000 fm | 15 413 533 850 000 fm | 15 789 473 700 000 fm | 16 165 413 550 000 fm | 16 541 353 400 000 fm | 16 917 293 250 000 fm | 17 293 233 100 000 fm | 17 669 172 950 000 fm | 18 045 112 800 000 fm | 18 421 052 650 000 fm | 18 796 992 500 000 fm | 19 172 932 350 000 fm | 19 548 872 200 000 fm | 19 924 812 050 000 fm | 20 300 751 900 000 fm | 20 676 691 750 000 fm | 21 052 631 600 000 fm | 21 428 571 450 000 fm | 21 804 511 300 000 fm | 22 180 451 150 000 fm | 22 556 391 000 000 fm | 22 932 330 850 000 fm | 23 308 270 700 000 fm | 23 684 210 550 000 fm | 24 060 150 400 000 fm | 24 436 090 250 000 fm | 24 812 030 100 000 fm | 25 187 969 950 000 fm | 25 563 909 800 000 fm | 25 939 849 650 000 fm | 26 315 789 500 000 fm | 26 691 729 350 000 fm | 27 067 669 200 000 fm | 27 443 609 050 000 fm | 27 819 548 900 000 fm | 28 195 488 750 000 fm | 28 571 428 600 000 fm | 28 947 368 450 000 fm | 29 323 308 300 000 fm | 29 699 248 150 000 fm | 30 075 188 000 000 fm | 30 451 127 850 000 fm | 30 827 067 700 000 fm | 31 203 007 550 000 fm | 31 578 947 400 000 fm | 31 954 887 250 000 fm | 32 330 827 100 000 fm | 32 706 766 950 000 fm | 33 082 706 800 000 fm | 33 458 646 650 000 fm | 33 834 586 500 000 fm | 34 210 526 350 000 fm | 34 586 466 200 000 fm | 34 962 406 050 000 fm | 35 338 345 900 000 fm | 35 714 285 750 000 fm | 36 090 225 600 000 fm | 36 466 165 450 000 fm | 36 842 105 300 000 fm | 37 218 045 150 000 fm | 37 593 985 000 000 fm |
In typography, the point is the smallest unit of measure. It is used for measuring font size, leading, and other items on a printed page.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
point (Didot; European) | pt | ≡ 1⁄12 × 1⁄72 of pied du roi; | ≈ 0.00037597 m; | Other (Length) |
points (Didot; European) | fermi | points (Didot; European) | fermi |
---|---|---|---|
1 | ≈ 375939850000 | 4 | ≈ 1503759400000 |
1.5 | ≈ 563909775000 | 4.5 | ≈ 1691729325000 |
2 | ≈ 751879700000 | 5 | ≈ 1879699250000 |
2.5 | ≈ 939849625000 | 5.5 | ≈ 2067669175000 |
3 | ≈ 1127819550000 | 6 | ≈ 2255639100000 |
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one. This distance can also be called a fermi and was so named in honour of physicist Enrico Fermi, as it is a typical length-scale of nuclear physics.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
fermi | fm | ≡ 1×10−15 m | ≡ 1×10−15 m | Metric system Non-SI |
fermi | points (Didot; European) | fermi | points (Didot; European) |
---|---|---|---|
1 | ≈ 2.65999999734E-12 | 4 | ≈ 1.063999998936E-11 |
1.5 | ≈ 3.98999999601E-12 | 4.5 | ≈ 1.196999998803E-11 |
2 | ≈ 5.31999999468E-12 | 5 | ≈ 1.32999999867E-11 |
2.5 | ≈ 6.64999999335E-12 | 5.5 | ≈ 1.462999998537E-11 |
3 | ≈ 7.97999999202E-12 | 6 | ≈ 1.595999998404E-11 |
points (Didot; European) | fermi |
---|---|
1 | ≈ 375 939 850 000 |
2.65999999734 × 10-12 | ≈ 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 …) |