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Time Unit Converter

Seconds, minutes, hours, days, weeks, months and years.

Best for: Use it to convert a runtime, a deadline, an age or any duration between units.

Complete guide

Input

From
To
How it's calculated & sources
The Time Unit Converter uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

How it works

Second is the SI base. Year uses Julian year (365.25 days) for accuracy.

Example

1 day = 24 hours = 1,440 minutes = 86,400 seconds.

Frequently asked questions

Is conversion real-time?+

Yes — values update instantly as you type in either field, with full bidirectional input.

Where does the time reference come from?+

All factors are SI-anchored using internationally accepted conversions.

Continue your journey

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Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Time Unit?
A time unit converter changes a duration between seconds, minutes, hours, days, weeks, months and years.
Why does Time Unit matter?
The same duration in the unit you need. Longer units (months, years) are approximate because their length varies.
How is Time Unit calculated?
Every value is converted through seconds as the common base, then expressed in the unit you want. Formula: 1 min = 60 s; 1 h = 3,600 s; 1 day = 86,400 s; 1 week = 604,800 s; 1 (365-day) year = 31,536,000 s.
What are common time unit mistakes?
Treating a month as a fixed length - months vary from 28 to 31 days.
When should you use the Time Unit Converter?
Use it to convert a runtime, a deadline, an age or any duration between units.

What is the Time Unit Converter?

A time unit converter changes a duration between seconds, minutes, hours, days, weeks, months and years.

How the Time Unit Converter works

Every value is converted through seconds as the common base, then expressed in the unit you want.

1 min = 60 s; 1 h = 3,600 s; 1 day = 86,400 s; 1 week = 604,800 s; 1 (365-day) year = 31,536,000 s

Time unit conversions — seconds, minutes, hours, days

1 minute6010.01676.94e-4
1 hour3,6006010.0417
1 day86,4001,440241
1 week604,80010,0801687
1 month (30 d)2,592,00043,20072030
1 year (365 d)31,536,000525,6008760365

Common mistakes to avoid

  • Treating a month as a fixed length - months vary from 28 to 31 days.
  • Using 365 days for a year when leap years matter.
  • Mixing up minutes and hours in the input.

Keywords: time, units, seconds.

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Time Unit Converter free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Time Unit Converter?+

Time Unit Converter uses the standard time unit formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Time Unit Converter runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Time Unit Converter on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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Seconds, minutes, hours, days, weeks, months and years.

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