Time Converter – Convert Time Online (Free Tool)
Free online Time Converter tool to convert time between timezones. Calculate time differences across different regions. Perfect for scheduling across time zones.
Example Output
Straight unit conversion using standard factors.
2 hours
What is Time Converter?
Time Converter switches duration values between common units — milliseconds, seconds, minutes, hours, days, weeks, months (30d), years (365d). Useful for cache TTL conversions, timeout calculations, and quick "how many seconds in 3 days?" lookups.
Why use this tool?
- 100% free with no hidden costs or daily limits
- Works offline after the first page load
- Lightweight page weight that loads quickly even on slow connections
- Strict and lenient parser modes for handling messy real-world data
- Handles UTF-8 BOM, mixed delimiters, and other edge cases that break simpler converters
How to use
- Enter a value and pick the source unit (ms, sec, min, hour, day, week, month, year)
- Pick the target unit — result appears in real time
- Use it for quick duration math without spreadsheet formulas
Examples
Cache TTL planning
Library expects TTL in seconds: 1 day → 86,400 seconds. 1 week → 604,800. 1 hour → 3,600.
Sprint planning
2 weeks = 14 days = 336 hours = 1,209,600 seconds. Useful for capacity math at hourly billing.
Common use cases
- TTL/timeout/expiry math in app configuration
- Sprint or project duration breakdowns
- Server uptime conversions (seconds → human-readable)
- Comparing rate limits expressed in different units
Troubleshooting
- Month/year conversion off vs my calendar.
- The tool uses fixed-length months (30 days) and years (365 days) — close enough for back-of-the-envelope math. For calendar-accurate work, use Age Calculator instead.
Frequently Asked Questions
You can convert between seconds, minutes, hours, days, weeks, milliseconds, microseconds, and nanoseconds.
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