Time Unit Converter
Convert between nanoseconds, milliseconds, seconds, minutes, hours, days, weeks, months, years, decades, and centuries.
Reviewed October 7, 2026 Runs in your browser — inputs are never stored
1 Minute (min) = 60.000000 Second (s)
This tool provides general unit conversions for everyday and educational use. For regulated, legal, or scientific applications, verify conversion factors against the applicable official standard.
About the Time Unit Converter
The time unit converter changes durations across a wide range, from nanoseconds and milliseconds to days, weeks, months, years and centuries. Months are treated as 30 days and years as 365 days, so the long-range figures are approximations, while seconds, minutes, hours, days and weeks are exact.
How to use it
- 1Type the value you want to convert.
- 2Choose the unit you are converting from and the unit you want (for example milliseconds to seconds).
- 3The result updates as you type; use the swap button to reverse the direction.
- 4Copy or share the result with the buttons below it.
Worked example
250 ms = 0.25 s, and 1 day = 86,400 seconds.
How it works
Reference values
1 minute = 60 s · 1 hour = 3,600 s · 1 day = 86,400 s · 1 year = 31,536,000 s (365 days).
Common use cases
- Converting programming timeouts
- Science and engineering calculations
- Estimating long durations
Frequently asked questions
A:A Julian year = 31,557,600 s. A Gregorian year = 365.2425 × 86,400 ≈ 31,556,952 s. This calculator uses 31,536,000 s (365 × 24 × 60 × 60).
A:A nanosecond = 10⁻⁹ seconds. Light travels about 30 cm (1 foot) in 1 nanosecond.
Reviewed for accuracy · Last updated October 7, 2026
Conversion factors are based on internationally defined SI units and standard metric/imperial equivalence tables.
CalcWisee Editorial Team
Calculator development and formula review
CalcWisee is an independent site founded by Ayman. Every calculator is built from a published formula or official definition, tested against hand-worked examples before it goes live, and corrected promptly when a reader reports an issue to ayman@calcwisee.com.
Expertise: Financial mathematics, Health and fitness formulas, Applied mathematics, Unit conversion standards
References & sources
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