Time Converter
Convert between nanoseconds, seconds, minutes, hours, days, weeks and years.
Convert between nanoseconds, seconds, minutes, hours, days, weeks and years.
This free Time Converter from KX Toolkit is part of our all-in-one online toolkit. It runs entirely in your browser, so your data never leaves your device for client-side operations. 100% free, forever - no paywall, no credit card, no trial.
How to use the Time Converter
- Pick the unit you have and the unit you want.
- Enter the value.
- Read the converted value - most tools update as you type.
- Use the swap button to reverse the direction if needed.
What you can do with the Time Converter
- Convert recipe ingredients between metric and imperial.
- Translate engineering specs across systems.
- Check shipping weights and dimensions before ordering.
- Quick travel conversions for distance, speed and currency.
Why use KX Toolkit's Time Converter
- Browser-based: Works on Windows, macOS, Linux, iOS and Android - no install, no extension.
- Privacy-first: Client-side tools never upload your data; server-side tools delete files right after processing.
- Mobile-friendly: Full feature parity on phones and tablets - not a stripped-down view.
- Fast: Optimised for instant feedback. No artificial waiting screens, no email-gated downloads.
- One hub for everything: 300+ tools across SEO, text, image, PDF, code, color, calculators and more - skip switching between sites.
Tips for the best results
For very large or very small numbers, use the scientific-notation option - it avoids floating-point rounding errors.
Related Unit Converter Tools
If you find this tool useful, explore the full Unit Converter Tools collection or browse our complete tool directory. KX Toolkit is built for marketers, developers, designers, students and anyone who needs a quick utility without signing up for yet another SaaS.
How many seconds are in a day?
A standard day has 86,400 seconds: 60 seconds times 60 minutes times 24 hours. A week has 604,800 seconds and a non-leap year has 31,536,000 seconds. Leap seconds occasionally added to UTC do not affect these values for most practical purposes. The converter handles common time units and the larger ones at once so you can scale between them.
What is a nanosecond used for?
A nanosecond is one billionth of a second (10^-9 s). It is the timescale of computer CPU cycles, fibre-optic signal transmission, and high-speed electronics. Light travels about 30 cm in one nanosecond. The converter lets you scale up from nanoseconds to seconds, minutes, or beyond, which is useful when comparing benchmarks, latency figures, or scientific results.
How is a year defined in conversions?
The converter typically uses 365.25 days per year (the Julian year) to account for leap years on average, or 365 days for a common year. A tropical year is 365.2422 days. The differences are small but matter for very long durations. Always check which definition is in use, especially for scientific and astronomical calculations.
How do I convert hours into minutes and seconds?
Multiply hours by 60 for minutes and by 3,600 for seconds. So 2.5 hours equals 150 minutes or 9,000 seconds. The converter shows all three columns so you do not need to multiply manually. This is useful for sport timing, project management, and converting decimal hours from time tracking apps into a more natural HH:MM:SS format.
What is the difference between a month and 30 days?
Months vary from 28 to 31 days, so "a month" is ambiguous. The converter usually treats one month as 30.4375 days (365.25/12) for averages, or 30 days for a quick estimate. For exact differences between calendar dates, use the date difference calculator instead, which respects month lengths and leap years instead of averaging.
Why are some time intervals longer than others?
Earth time units depend on astronomical motion, which is not a perfect multiple of seconds. A solar day is slightly longer than a sidereal day, leap seconds are added irregularly, and years differ in length. The converter uses standard averages that work for everyday math but should not be used for orbital mechanics or precise civil time.
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