Online Time Converter

Quickly convert seconds, minutes, hours, days, and years. Accurate and free online calculator.

Time is one of the seven fundamental quantities of the SI, with the second (s) as the base unit. In daily life: 1 hour = 3,600 seconds; 1 day = 86,400 seconds; 1 week = 604,800 seconds. Our converter uses the Julian year of 365.25 days for precision in long calculations. In programming, Unix timestamps count seconds since January 1, 1970. In physics, nanoseconds (ns) and microseconds (μs) measure electronic pulses and chemical reactions. Supports everything from nanoseconds to millennia.

Frequently Asked Questions

How many seconds are in 1 hour?

1 hour has 3,600 seconds.

How many minutes are in a day?

There are 1,440 minutes in a full solar day.

How do I convert days into hours?

Multiply the number of days by 24.

How does the calculator handle leap years?

Our calculations adopt the standard Julian year of 365.25 days to ensure greater accuracy.

Does the converter require registration?

No, access is instant and free.