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Time Converter

Convert between different time units (seconds, minutes, hours, days, years, etc.) instantly with precision.

From

Popular Conversions

Quick Reference Table

Second (s)	Millisecond (ms)
1 s	0.001 ms
5 s	0.005 ms
10 s	0.01 ms
50 s	0.05 ms
100 s	0.1 ms
500 s	0.5 ms
1000 s	1 ms

How to Convert

1. Enter the value you want to convert in the From or To input box.

2. Select the corresponding units from the dropdown menus below the input boxes.

3. The conversion calculates instantly and dynamically in both directions.

4. Click the swap button in the center to reverse the conversion direction, or click the copy icon to copy the values to your clipboard.

💡 Pro Tip: Click any of the popular conversions at the bottom of the card to configure the fields instantly!

About Time Converter

Time conversion is an essential tool for project management, payroll tracking, physics, and daily scheduling. The fundamental unit of time in both the International System of Units (SI) and most everyday contexts is the second.

The Base-60 System

Unlike many other measurement systems that rely entirely on base-10 mathematics, time is heavily based on the sexagesimal (base-60) system, originating from ancient Sumeria and Babylon. This is why there are 60 seconds in a minute and 60 minutes in an hour. Converting larger units like months and years can sometimes be mathematically imprecise due to leap years and varying month lengths, but standardized averages (like a 365-day year) are typically used for general conversions.

Common Use Cases

Payroll and Freelancing: Converting fractional hours to minutes (e.g., 2.5 hours = 150 minutes) ensures accurate billing and payroll.
Software Engineering: Computer systems process time using Unix timestamps, which count the number of seconds (or milliseconds) since January 1, 1970. Developers constantly convert between milliseconds, seconds, and readable dates.
Logistics and Scheduling: Converting days into working hours, or mapping out project timelines across weeks and months, is crucial for delivery and event planning.

Frequently Asked Questions

Learn more about time converter and formulas

📚 5 Questions Answered

There are exactly 86,400 seconds in a standard 24-hour day (60 seconds × 60 minutes × 24 hours).

A standard year has 52 weeks plus 1 day (making 365 days). A leap year has 52 weeks plus 2 days (making 366 days).

A millisecond is one-thousandth (1/1,000) of a second. A microsecond is one-millionth (1/1,000,000) of a second. A nanosecond is one-billionth (1/1,000,000,000) of a second.

The base-60 system was developed by the ancient Sumerians and passed down to the Babylonians. The number 60 is a highly composite number with many divisors (1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30), making it incredibly easy to divide into fractions.

A leap second is a one-second adjustment occasionally applied to Coordinated Universal Time (UTC) to keep clocks synchronized with the Earth's slowing rotation. However, international bodies have voted to scrap leap seconds by 2035 due to the havoc they cause in software systems.