century | 1 c | 2 c | 3 c | 4 c | 5 c | 6 c | 7 c | 8 c | 9 c | 10 c | 11 c | 12 c | 13 c | 14 c | 15 c | 16 c | 17 c | 18 c | 19 c | 20 c | 21 c | 22 c | 23 c | 24 c | 25 c | 26 c | 27 c | 28 c | 29 c | 30 c | 31 c | 32 c | 33 c | 34 c | 35 c | 36 c | 37 c | 38 c | 39 c | 40 c | 41 c | 42 c | 43 c | 44 c | 45 c | 46 c | 47 c | 48 c | 49 c | 50 c | 51 c | 52 c | 53 c | 54 c | 55 c | 56 c | 57 c | 58 c | 59 c | 60 c | 61 c | 62 c | 63 c | 64 c | 65 c | 66 c | 67 c | 68 c | 69 c | 70 c | 71 c | 72 c | 73 c | 74 c | 75 c | 76 c | 77 c | 78 c | 79 c | 80 c | 81 c | 82 c | 83 c | 84 c | 85 c | 86 c | 87 c | 88 c | 89 c | 90 c | 91 c | 92 c | 93 c | 94 c | 95 c | 96 c | 97 c | 98 c | 99 c | 100 c |
decade | 10 dec | 20 dec | 30 dec | 40 dec | 50 dec | 60 dec | 70 dec | 80 dec | 90 dec | 100 dec | 110 dec | 120 dec | 130 dec | 140 dec | 150 dec | 160 dec | 170 dec | 180 dec | 190 dec | 200 dec | 210 dec | 220 dec | 230 dec | 240 dec | 250 dec | 260 dec | 270 dec | 280 dec | 290 dec | 300 dec | 310 dec | 320 dec | 330 dec | 340 dec | 350 dec | 360 dec | 370 dec | 380 dec | 390 dec | 400 dec | 410 dec | 420 dec | 430 dec | 440 dec | 450 dec | 460 dec | 470 dec | 480 dec | 490 dec | 500 dec | 510 dec | 520 dec | 530 dec | 540 dec | 550 dec | 560 dec | 570 dec | 580 dec | 590 dec | 600 dec | 610 dec | 620 dec | 630 dec | 640 dec | 650 dec | 660 dec | 670 dec | 680 dec | 690 dec | 700 dec | 710 dec | 720 dec | 730 dec | 740 dec | 750 dec | 760 dec | 770 dec | 780 dec | 790 dec | 800 dec | 810 dec | 820 dec | 830 dec | 840 dec | 850 dec | 860 dec | 870 dec | 880 dec | 890 dec | 900 dec | 910 dec | 920 dec | 930 dec | 940 dec | 950 dec | 960 dec | 970 dec | 980 dec | 990 dec | 1 000 dec |
A century (from the Latin centum, meaning one hundred; abbreviated c.) is a period of 100 years.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
century | c | ≡ 100 years (100 y) | = 3.1556952 Gs | Metric system SI |
centuries | decades | centuries | decades |
---|---|---|---|
1 | = 10 | 6 | = 60 |
2 | = 20 | 7 | = 70 |
3 | = 30 | 8 | = 80 |
4 | = 40 | 9 | = 90 |
5 | = 50 | 10 | = 100 |
A decade is a period of ten years. The word is derived (via French and Latin) from the Ancient Greek: δεκάς (/ðɛkˈɑːs/, transliteration=dekas), which means a group of ten.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
decade | dec | ≡ 10 years (10 y) | = 315 569 260 s | Metric system SI |
decades | centuries | decades | centuries |
---|---|---|---|
1 | = 0.1 | 6 | = 0.6 |
2 | = 0.2 | 7 | = 0.7 |
3 | = 0.3 | 8 | = 0.8 |
4 | = 0.4 | 9 | = 0.9 |
5 | = 0.5 | 10 | = 1 |
centuries | decades |
---|---|
1 | = 10 |
0.1 | = 1 |
You can find the conversion in other languages in the following:
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 …) |