Convert Years to Months
1 year is 12 mo. One year is exactly 12 months.
One year is 12 months. To convert years to months, multiply by 12; to go the other way, divide by 12 or multiply by 0.083333333. This one is an average rather than an exact factor: a calendar year is 365 days or 366, so this figure is an average across the 400-year leap cycle. The definition comes from BIPM SI Brochure. The average Gregorian year, 365.2425 days — the figure the leap-year rule exists to produce.
Factor checked against the defining standard · How we check
- Years × 12
value * 1212 mo
1 year in every time unit
| Unit | Value | Exact factor |
|---|---|---|
| seconds | 31,556,952 s | × 31,556,952 |
| minutes | 525,949.2 min | × 525,949.2 |
| hours | 8,765.82 h | × 8,765.82 |
| days | 365.2425 d | × 365.2425 |
| weeks | 52.1775 wk | × 52.1775 |
| months | 12 mo | × 12 |
| years (as entered) | 1 yr | — |
Factors are entered by hand from BIPM SI Brochure rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert years to months?
- 1.Take the measurement in years.
- 2.Multiply by 12 — that is how many months fit in one year.
- 3.To go back the other way, divide by 12, or multiply by 0.083333333.
Years to months conversion table
| Years | Months |
|---|---|
| 1 yr | 12 mo |
| 2 yr | 24 mo |
| 3 yr | 36 mo |
| 4 yr | 48 mo |
| 5 yr | 60 mo |
| 6 yr | 72 mo |
| 7 yr | 84 mo |
| 8 yr | 96 mo |
| 9 yr | 108 mo |
| 10 yr | 120 mo |
| 12 yr | 144 mo |
| 15 yr | 180 mo |
| 20 yr | 240 mo |
| 25 yr | 300 mo |
| 50 yr | 600 mo |
| 100 yr | 1,200 mo |
What are years and months?
- Year (yr)
- The average Gregorian year, 365.2425 days — the figure the leap-year rule exists to produce.
- Month (mo)
- The average Gregorian month: a year divided by twelve, or 30.436875 days. Real months run 28 to 31 days.
Source: BIPM SI Brochure — the second, and units accepted for use with the SI
Questions people actually ask
- How many months are in a year?
- 12. The average Gregorian month: a year divided by twelve, or 30.436875 days. Real months run 28 to 31 days.
- How do I convert months back to years?
- Divide by 12, or multiply by 0.083333333 — they are the same operation.
Other time conversions
Months to years — the same conversion the other way.