Converting from Year (y) to Gregorian Year (GY) in Time

What is Year (y)

In astronomy, a year (y) is defined as the time it takes for a planet to orbit its star once. On Earth, a year is approximately 365 days.

What is Gregorian Year (GY)

The Gregorian year (GY) is the standard calendar year used in most parts of the world today. It is based on the solar year, with 365 days in a common year and 366 days in a leap year.

Conversion Formulas

The default conversion between Year (y) and Gregorian Year (GY) is as follows:

• 1 (y) = 0.9993361 (GY)
• 1 (GY) = 1.000664 (y)

For converting between other values, you can use the following formulas:

• GY=y×0.9993361
• y=GY×1.000664

Examples

1. Converting 5 years to Gregorian years:

GY=5×0.9993361=4.9966805

2. Converting 8 Gregorian years to years:

y=8×1.000664=8.005312

3. Custom conversion:

14 years =13.9907 Gregorian years

3 Gregorian years =3.001993 years

Use this page to perform converting from Year (y) to Gregorian Year (GY) for your calculations.