# year (common) to month (synodic) conversion

Conversion number between year (common) [a, y, or yr] and month (synodic) [mo] is 12.360065014036. This means, that year (common) is bigger unit than month (synodic).

### Contents [show][hide] Switch to reverse conversion:
from month (synodic) to year (common) conversion

### Enter the number in year (common):

Decimal Fraction Exponential Expression
 [a, y, or yr]
eg.: 10.12345 or 1.123e5

Result in month (synodic)

?
 precision 0 1 2 3 4 5 6 7 8 9 [info] Decimal: Exponential:

### Calculation process of conversion value

• 1 year (common) = (31536000) / (2551442.890) = 12.360065014036 month (synodic)
• 1 month (synodic) = (2551442.890) / (31536000) = 0.080905723300355 year (common)
• ? year (common) × (31536000  ("s"/"year (common)")) / (2551442.890  ("s"/"month (synodic)")) = ? month (synodic)

### High precision conversion

If conversion between year (common) to second and second to month (synodic) is exactly definied, high precision conversion from year (common) to month (synodic) is enabled. Since definition contain rounded number(s) too, there is no sense for high precision calculation, but if you want, you can enable it. Keep in mind, that converted number will be inaccurate due this rounding error!

### year (common) to month (synodic) conversion chart

 Start value: [year (common)] Step size [year (common)] How many lines? (max 100)

visual:
year (common)month (synodic)
00
10123.60065014036
20247.20130028072
30370.80195042108
40494.40260056144
50618.0032507018
60741.60390084216
70865.20455098252
80988.80520112288
901112.4058512632
1001236.0065014036
1101359.607151544
Copy to Excel

## Multiple conversion

Enter numbers in year (common) and click convert button.
One number per line.

Converted numbers in month (synodic):
Click to select all

## Details about year (common) and month (synodic) units:

Convert Year (common) to other unit:

### year (common)

Definition of year (common) unit: 365 d. The year commonly has 365 days (except the leap year)

Convert Month (synodic) to other unit:

### month (synodic)

Definition of month (synodic) unit: ≈ 29.530589 days. Synodic month = Cycle time of moon phases (example, from fool moon to next fool moon). This period is not constant and it is longer than moon rotation around Earth (sidereal month), because moon and Earth moves together around the Sun. ← Back to Time units 