🌍 Days to Years
Translate day counts into years using the Gregorian average.
Useful for warranty tracking, long-term planning, or understanding age calculations.
730 days ≈
1.998631 years
Months (avg): 23.983573
Weeks: 104.285714
How to Use This Calculator
Enter days
Type the number of days you want to evaluate.
See years
The calculator divides by 365.25, accounting for leap years over long averages.
Review months and weeks
Extra context helps when communicating the same duration in different terms.
Formula
Years ≈ Days ÷ 365.25
Months (avg) ≈ Days ÷ 30.436875
Weeks = Days ÷ 7
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Aging, warranties, and service intervals are often specified in years, but data may arrive in days. This calculator bridges the gap using the Gregorian astronomical average year (365.25 days).
The month conversion uses the average month length. For precise calendar calculations, reference actual month lengths or use a date difference calculator.
Weeks offer a quick sanity check and help when aligning with recurring weekly events.
Frequently Asked Questions
Is the year length exact?
It is the long-term average. Specific calendar years are 365 days, with leap years at 366.
Can I use this for age calculations?
It gives an approximate age in years. For birthday-to-birthday accuracy, use date difference functions that account for actual months.
Why show months as well?
Months help when timelines demand finer granularity than years but coarser than weeks.
Does the calculator accept decimal days?
Yes. Partial days convert to fractional years, which is useful for finance and engineering timelines.