Converted Value (click to copy)
0 minutes
1 s = 0.01666667 min
100% Private: No data is ever sent to any server. All calculations are performed locally in your browser.
How to Use This Time Converter
Converting time takes about two seconds:
- Enter a value in the "From" field — for example, 90 for 90 minutes.
- Pick the source unit from the first dropdown (e.g., Minutes).
- Pick the target unit from the second dropdown (e.g., Hours).
- Read the result — the green box shows both the decimal value and a readable format like "1 hour 30 minutes".
- Check the All Units panel for the same value expressed in every other unit at once.
Click any result in the "All Units" panel to copy that specific value. Click the main result box to copy the primary conversion.
💡 Pro tip: Use the All Units panel as a sanity check. If your "1 day" input shows 86,400 seconds, 1,440 minutes, and 24 hours — you know the conversion is right. This also makes the tool useful for reference: keep it open while planning schedules or estimating durations.
Time Unit Reference Table
The table below shows each common time unit and what it equals in seconds, minutes, and hours.
| Unit |
In Seconds |
In Minutes |
In Hours |
Common Use |
| 1 Microsecond (µs) | 0.000001 | — | — | Computing, electronics |
| 1 Millisecond (ms) | 0.001 | — | — | Web latency, audio |
| 1 Second (s) | 1 | 0.0167 | 0.00028 | SI base unit of time |
| 1 Minute (min) | 60 | 1 | 0.0167 | Everyday timing |
| 1 Hour (h) | 3,600 | 60 | 1 | Schedules, meetings |
| 1 Day (d) | 86,400 | 1,440 | 24 | Calendars |
| 1 Week (wk) | 604,800 | 10,080 | 168 | Planning cycles |
| 1 Month (avg) | 2,629,746 | 43,829.1 | 730.485 | Financial reports |
| 1 Year (365d) | 31,536,000 | 525,600 | 8,760 | Age, annual planning |
| 1 Leap year (366d) | 31,622,400 | 527,040 | 8,784 | Calendar correction |
| 1 Decade | 315,360,000 | 5,256,000 | 87,600 | Cultural eras |
| 1 Century | 3,153,600,000 | 52,560,000 | 876,000 | Historical periods |
Common Uses of a Time Converter
- Project planning. Convert between working hours, days, and weeks to estimate timelines accurately.
- Software development. Milliseconds, microseconds, and seconds are used at different layers — API timeouts, retry delays, cache expiry.
- Payroll and invoicing. Converting hours worked to days or weeks for monthly billing and tax calculations.
- Scientific computing. Physics simulations often work in seconds but report in hours, days, or years.
- Fitness and health. Convert exercise durations between minutes and hours, or check heart rate intervals in milliseconds.
- Financial modeling. Interest rates are quoted annually but computed monthly, daily, or even continuously.
- Age and milestones. Convert your age in years to days, hours, or seconds for celebration graphics.
Common Mistakes to Avoid
- Assuming every month has the same length. February has 28 or 29 days; other months have 30 or 31. Our "Month" option uses the Gregorian average (30.436875 days) — accurate for aggregate math, less so for specific calendar months.
- Forgetting about leap years. If you're converting a specific number of years to days, use "Leap year" for leap-year calculations or the average for long-term projections.
- Mixing hours and decimal hours. "1.5 hours" means 1 hour 30 minutes, not 1 hour 5 minutes. Our readable output shows the correct interpretation.
- Assuming 1 billion seconds equals 32 years. It actually equals about 31.7 years. Small conversions compound over long ranges — always trust the full precision, not a mental shortcut.
- Using years for age in legal or medical contexts. Age in legal and medical settings is often expressed in days for infants, and in years+months for older children. Convert carefully.
Why We Built This Tool
Time conversions come up everywhere — from estimating project timelines to checking how many seconds are in a leap year. Most online time converters only handle one pair at a time, force you to re-enter values, or fail on mobile.
Ours does three things better: it shows every unit at once so you can glance without re-converting, it produces a human-readable format like "1 hour 30 minutes" alongside the decimal, and it runs entirely in your browser with no tracking. If you spot a bug, or you'd like us to add a feature — like a duration calculator, an elapsed-time timer, or a specific calendar-date converter — drop us a note using the contact link below.
SkillsInsider Editorial
Reviewed and maintained
Every conversion factor on this page was verified against the SI Brochure (9th edition) and the Gregorian calendar definition. The average month (30.436875 days) and average year (365.2425 days) are the standard values used in scientific and financial calculations. If you spot an error, or you'd like a new unit added, please
send us the details so we can fix it. Last reviewed: October 2026.
