Year (average) to Month (average) Converter
1 yr = 12 mo — convert instantly with formula and table.
Enter any number above and the result updates as you type. Everything runs locally in your browser, so it is instant and private.
Quick answer: one year (average) equals 12 months. So to convert years to months, multiply by 12.
How to convert years to months
months = years × 12
The average Gregorian year is 365.25 days — 31,557,600 seconds — the figure used for ages, interest rates and astronomy's light-year.
The average calendar month is about 30.44 days (2,629,800 seconds) — a twelfth of the average Gregorian year, used for rates and rough planning.
Year (average) to Month (average) conversion table
| Year (average) (yr) | Month (average) (mo) |
|---|---|
| 0.01 yr | 0.12 mo |
| 0.1 yr | 1.2 mo |
| 0.25 yr | 3 mo |
| 0.4 yr | 4.8 mo |
| 0.75 yr | 9 mo |
| 1.25 yr | 15 mo |
| 1.75 yr | 21 mo |
| 2.5 yr | 30 mo |
| 3.5 yr | 42 mo |
| 4.5 yr | 54 mo |
| 6 yr | 72 mo |
| 8 yr | 96 mo |
| 10 yr | 120 mo |
| 12 yr | 144 mo |
| 14 yr | 168 mo |
| 16 yr | 192 mo |
| 18 yr | 216 mo |
| 20 yr | 240 mo |
| 24 yr | 288 mo |
| 26 yr | 312 mo |
| 30 yr | 360 mo |
| 35 yr | 420 mo |
| 45 yr | 540 mo |
| 55 yr | 660 mo |
| 65 yr | 780 mo |
| 75 yr | 900 mo |
| 85 yr | 1,020 mo |
| 95 yr | 1,140 mo |
| 110 yr | 1,320 mo |
| 125 yr | 1,500 mo |
| 175 yr | 2,100 mo |
| 250 yr | 3,000 mo |
| 350 yr | 4,200 mo |
| 450 yr | 5,400 mo |
| 600 yr | 7,200 mo |
| 750 yr | 9,000 mo |
| 900 yr | 10,800 mo |
| 1,500 yr | 18,000 mo |
| 2,500 yr | 30,000 mo |
| 10,000 yr | 120,000 mo |
Need the opposite direction? Use the Month (average) to Year (average) converter, or read our complete guide to time conversions for every formula in one place.
Frequently asked questions
How many months are in one year (average)?
One year (average) equals 12 months. Multiply any year (average) value by 12 to get months.
What is 10 years in months?
10 years equal 120 months (10 × 12).
Is the year (average) to month (average) conversion exact?
The conversion factor used here (12) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.