Age / Time Converter
Convert
Years use a 365-day (non-leap) convention. Enter a value and pick the units.
Age / time spans from milliseconds to years. The base unit is the second; larger units are defined as 60 s/min, 3600 s/h, 86400 s/day, 604800 s/week, and 31536000 s/yr (365 days, non-leap).
Converting between these is useful for expressing an age in different units, estimating a lifespan in seconds, or relating a project duration in weeks to days. The year is a 365-day convention (not accounting for leap years).
Common applications
Expressing an age in days or weeks; converting a project duration from weeks to days; estimating a lifespan in seconds.
Frequently asked questions
31,536,000 s (365 days, non-leap).
No — it uses a 365-day year. For precise astronomical work, use a different convention.
1 week = 7 days. Multiply by 7.