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Time Converter

Convert between milliseconds, seconds, minutes, hours, days, weeks, months and years - all at once.

UnitValue

Month = 30.4368 days (avg). Year = 365.2425 days (avg, including leap years).

Use Cases

When to Convert Time

Programming & Computing

Convert API timeouts, cache TTLs and database timestamps between milliseconds and seconds.

Project Planning

Convert sprint weeks to days, or total hours worked to days and weeks for reporting.

Science & Physics

Convert between SI time units for experiments, half-life calculations, and data logging.

Health & Fitness

Convert running times between seconds and minutes per kilometre for pace calculations.

Work & Payroll

Convert weekly hours to monthly or annual totals for salary and contract calculations.

Loan & Finance

Convert loan tenure from months to years or vice versa when comparing EMI plans.

FAQ

Time Conversion Questions

1 day = 24 hours × 60 minutes × 60 seconds = 86,400 seconds. Knowing this helps with time-based programming and scheduling.

1 week = 7 × 24 = 168 hours. A 40-hour work week is therefore 40/168 ≈ 23.8% of all available hours in a week.

Months have 28–31 days. This converter uses the Gregorian calendar average of 30.4368 days (365.2425 ÷ 12) to give consistent results regardless of which specific month you mean.

1 minute = 60 seconds × 1,000 ms = 60,000 milliseconds. Useful for setting timeouts and intervals in JavaScript or Java.

1 year ≈ 31,557,600 seconds (365.25 days average). The exact figure is 31,556,926 seconds for a tropical year (the time for Earth to complete one orbit around the Sun).