To convert tropical years to decades, multiply the value by 0.0999999. To go the other way, multiply decades by 10 to get tropical years.
| Tropical Years (trop yr) | Decades (dec) |
|---|---|
| 1 trop yr | 0.0999999 dec |
| 2 trop yr | 0.2 dec |
| 3 trop yr | 0.3 dec |
| 4 trop yr | 0.4 dec |
| 5 trop yr | 0.5 dec |
| 6 trop yr | 0.599999 dec |
| 7 trop yr | 0.699999 dec |
| 8 trop yr | 0.799999 dec |
| 9 trop yr | 0.899999 dec |
| 10 trop yr | 0.999999 dec |
| 12 trop yr | 1.2 dec |
| 14 trop yr | 1.4 dec |
| 15 trop yr | 1.5 dec |
| 20 trop yr | 2 dec |
| 21 trop yr | 2.1 dec |
| 24 trop yr | 2.4 dec |
| 25 trop yr | 2.5 dec |
| 30 trop yr | 3 dec |
| 40 trop yr | 4 dec |
| 50 trop yr | 5 dec |
| 60 trop yr | 5.99999 dec |
| 75 trop yr | 7.49999 dec |
| 80 trop yr | 7.99999 dec |
| 100 trop yr | 9.99999 dec |
| 200 trop yr | 20 dec |
| 250 trop yr | 25 dec |
| 300 trop yr | 30 dec |
| 400 trop yr | 40 dec |
| 500 trop yr | 50 dec |
| 750 trop yr | 74.9999 dec |
| 1,000 trop yr | 99.9999 dec |
Tropical year (trop yr). A tropical (solar) year is 365.24219 days, from one March equinox to the next.
Decade (dec). A decade is 10 years.
There are 0.0999999 decades in one tropical year.
Multiply the number of tropical years by 0.0999999. For example, 10 tropical years equal 0.999999 decades.
One decade equals 10 tropical years.
1.2 decades. Other common values: 5 tropical years = 0.5 decades and 100 tropical years = 9.99999 decades.