Years to Decades Calculator

Use the years to decades calculator to convert between years and decades.

Clear
Result0.1 dec1 yr converted
1 yr equals0.1 dec
1 dec equals10 yr

Year (average) to decade reference

year (average)decade
1 yr0.1 dec
2 yr0.2 dec
5 yr0.5 dec
10 yr1 dec
25 yr2.5 dec
50 yr5 dec
100 yr10 dec
500 yr50 dec
1,000 yr100 dec

How to convert year (average) to decade

One year (average) equals 0.1 dec, so multiply the number of year (average)s by 0.1:

dec = yr × 0.1

Going the other way

One decade equals 10 yr, so to convert back:

yr = dec × 10

Both directions are shown in the results above, and the drop-downs let you convert between any pair of time units — not just these two.