Here you can convert the Time unit Year into the unit Month and vice versa you can convert Month into Year. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result, i.e., yr to mo or mo to yr. With the following calculator you can also calculate any other Time unit.
Info about "Year"
A year (a) (Latin: annus) forms the time span of 365 days, or in the case of a leap year, 366 consecutive days. Due to its varying length, the year is not a physical unit of time and thus not a unit of time in the international SI system of units.
In the time unit converter, a year is always calculated to be 365 days.
In astronomical terms, a year is defined as the duration of the Earth’s orbit around the Sun, which lasts 365.25 days on average. Due to the quarter of a day, a normal calendar year (common year) is defined as 365 days, which is replaced every four years by a leap year with 366 days.
In everyday life, the term "year" is understood to mean the period from 1st January to 31st December.
Info about "Month"
A month forms the time span of 28, 29, 30 or 31 consecutive days. Due to its varying length, the month is not a physical unit of time and thus not a unit of time in the international SI system of units.
To enable a general conversion (e.g., into seconds, minutes or years), the average length of the month in days is defined: Since a year comprises 12 months, a normal calendar year with 365 days results in a month length of 365 / 12 = 30.416667 days
In astronomical terms, a month is defined as the period of one complete revolution of the moon. Depending on the definition, the lunar month is a little more than 28 days on average.
Basis for conversion Year (yr) to Month (mo) and vice versa
The abbreviation for the "Time unit Year" is yr. The abbreviation for the "Time unit Month" is mo.
Formula for the conversion of Year (yr) to Month (mo) and vice versa
The calculation from Year to Month shall be made using the following conversion formula:
| Conversion formula Year to Month |
|---|
|
Determine the number of Month from Year Year × 12 |
Formula for the conversion of Month (mo) to Year (yr)
The calculation from Month to Year shall be made using the following conversion formula:
| Conversion formula Month to Year |
|---|
|
Determine the number of Year from Month Month × 0.083333333333333 |
Overview table: How many Year are how many Month?
| Year yr ⇒ Month mo |
|---|
| 0.01 yr are 0.12000 mo |
| 0.02 yr are 0.24000 mo |
| 0.03 yr are 0.36000 mo |
| 0.04 yr are 0.48000 mo |
| 0.05 yr are 0.60000 mo |
| 0.06 yr are 0.72000 mo |
| 0.07 yr are 0.84000 mo |
| 0.08 yr are 0.96000 mo |
| 0.09 yr are 1.08000 mo |
| 0.10 yr are 1.20000 mo |
| 0.20 yr are 2.40000 mo |
| 0.30 yr are 3.60000 mo |
| 0.40 yr are 4.80000 mo |
| 0.50 yr are 6 mo |
| 0.60 yr are 7.20000 mo |
| 0.70 yr are 8.40000 mo |
| 0.80 yr are 9.60000 mo |
| 0.90 yr are 10.80000 mo |
| 1 yr corresponds to 12 mo |
| 2 yr are 24 mo |
| 3 yr are 36 mo |
| 4 yr are 48 mo |
| 5 yr are 60 mo |
| 6 yr are 72 mo |
| 7 yr are 84 mo |
| 8 yr are 96 mo |
| 9 yr are 108 mo |
| 10 yr are 120 mo |
| 20 yr are 240 mo |
| 30 yr are 360 mo |
| 40 yr are 480 mo |
| 50 yr are 600 mo |
| 60 yr are 720 mo |
| 70 yr are 840 mo |
| 80 yr are 960 mo |
| 90 yr are 1 080 mo |
| 100 yr are 1 200 mo |
| 200 yr are 2 400 mo |
| 300 yr are 3 600 mo |
| 400 yr are 4 800 mo |
| 500 yr are 6 000 mo |
| 600 yr are 7 200 mo |
| 700 yr are 8 400 mo |
| 800 yr are 9 600 mo |
| 900 yr are 10 800 mo |
| 1 000 yr are 12 000 mo |
Overview table: How many Month are how many Year?
| Month mo ⇒ Year yr |
|---|
| 0.01 mo are 0.00083 yr |
| 0.02 mo are 0.00166 yr |
| 0.03 mo are 0.00250 yr |
| 0.04 mo are 0.00333 yr |
| 0.05 mo are 0.00416 yr |
| 0.06 mo are 0.00500 yr |
| 0.07 mo are 0.00583 yr |
| 0.08 mo are 0.00666 yr |
| 0.09 mo are 0.00750 yr |
| 0.10 mo are 0.00833 yr |
| 0.20 mo are 0.01666 yr |
| 0.30 mo are 0.02500 yr |
| 0.40 mo are 0.03333 yr |
| 0.50 mo are 0.04166 yr |
| 0.60 mo are 0.05000 yr |
| 0.70 mo are 0.05833 yr |
| 0.80 mo are 0.06666 yr |
| 0.90 mo are 0.07500 yr |
| 1 mo corresponds to 0.08333 yr |
| 2 mo are 0.16666 yr |
| 3 mo are 0.25000 yr |
| 4 mo are 0.33333 yr |
| 5 mo are 0.41666 yr |
| 6 mo are 0.50000 yr |
| 7 mo are 0.58333 yr |
| 8 mo are 0.66666 yr |
| 9 mo are 0.75000 yr |
| 10 mo are 0.83333 yr |
| 20 mo are 1.66666 yr |
| 30 mo are 2.50000 yr |
| 40 mo are 3.33333 yr |
| 50 mo are 4.16666 yr |
| 60 mo are 5 yr |
| 70 mo are 5.83333 yr |
| 80 mo are 6.66666 yr |
| 90 mo are 7.50000 yr |
| 100 mo are 8.33333 yr |
| 200 mo are 16.66666 yr |
| 300 mo are 25 yr |
| 400 mo are 33.33333 yr |
| 500 mo are 41.66666 yr |
| 600 mo are 50 yr |
| 700 mo are 58.33333 yr |
| 800 mo are 66.66666 yr |
| 900 mo are 75 yr |
| 1 000 mo are 83.33333 yr |
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Source information
As source for the information in the "Time units" category, we have used in particular:
Last update on May 2, 2022
The pages of the "Time units" category were last editorially reviewed by Stefan Banse on May 2, 2022. They all correspond to the current status.
Previous changes on April 24, 2021
- April 24, 2021: Publication of the time units converter.
- Editorial revision of all texts in this category