Time Converter
Enter any time value and convert it to all common units instantly.
About the Time Converter
The time converter converts between seconds, minutes, hours, days, weeks, months and years instantly.
How to use the Time Converter
How the units relate
The everyday units stack up cleanly: 60 seconds to a minute, 60 minutes to an hour, 24 hours to a day, 7 days to a week. From there the converter uses standard averages — about 30.44 days to a month and 365.25 days to a year — so longer conversions stay accurate over time.
Why months and years are approximate
Months range from 28 to 31 days and leap years add an extra day every four years, so there is no single exact figure for “a month” or “a year” in seconds. The converter uses the long-run averages, which is the standard approach and is accurate for planning and estimates.
Conversions people reach for
Common uses include turning a project estimate from days into working hours, converting a cooking or workout time, checking how many weeks are in a stretch of months, or translating a scientific measurement between seconds and hours.
A note on accuracy
For short spans the converter is exact. Over months and years it uses averaged lengths, so a result can differ by a day or two from a calendar count across a specific date range. When you need the precise gap between two real dates, a dedicated date or age calculator is the better tool.
Frequently Asked Questions
How to Convert Time Units
Convert between hours, minutes and seconds instantly using this free time converter. Enter any value and the tool calculates the equivalent in every other unit automatically.
Common time conversions
- 1 hour = 60 minutes = 3,600 seconds
- 1 day = 24 hours = 1,440 minutes = 86,400 seconds
- 1 week = 168 hours = 10,080 minutes
- 90 minutes = 1.5 hours = 5,400 seconds
Why convert time?
Time conversion is useful for billing and invoicing (converting minutes worked to fractional hours), video editing (converting frame numbers to timecodes), cooking (recipes that use minutes vs hours), and travel planning (flight durations in different formats).
Conversions are exact for milliseconds through weeks. Months use an average of 30.44 days and years 365.25 days (accounting for leap years), since calendar months vary in length. Built and maintained by TooLegend. Last reviewed June 2026.