Time converter

Free Online Time Converter — Convert Seconds, Hours, Days, and Years Instantly

Easily convert time units between seconds, minutes, hours, days, weeks, and years using our Online Time Converter. This free calculator lets you instantly find out how many seconds are in an hour, how many days are in a week, or how many milliseconds are in a day — all in your browser, with no app or login required.

How to Use the Time Converter

1. Enter your value in any field (for example, “2 hours”).
2. The calculator will automatically fill in all other time units.
3. Click Reset to clear all fields and start again.

Supported Time Units

• Microseconds (μs) — one millionth of a second.
• Milliseconds (ms) — one thousandth of a second.
• Seconds (s) — the base unit of time.
• Minutes (min) — 60 seconds.
• Hours (h) — 60 minutes or 3,600 seconds.
• Days — 24 hours.
• Weeks — 7 days.
• Years — approximately 365 days.

Why Use This Online Time Converter?

• ⏱ Instant conversion between all major time units.
• 💻 Works directly in your browser — no installation.
• 📱 Fully responsive and mobile-friendly.
• 💡 Perfect for students, developers, engineers, and everyday users.

Examples

Example 1: 1 hour = 3,600 seconds
Example 2: 1 day = 24 hours
Example 3: 1 week = 7 days = 168 hours
Example 4: 1 year = 31,536,000 seconds

Whether you’re calculating time differences, converting between hours and seconds, or doing scientific time conversions, our free Time Converter makes it quick and accurate.