How Many Seconds in a Day

Convert time between any units easily, from days to seconds, weeks to minutes, or even nanoseconds. This tool updates automatically as you type or change units.

Conversion Options

Enter a number to convert.

Conversion Result
1 day = 86,400 seconds

How Many Seconds in a Day? 86,400 seconds. A free, instant tool to convert any time unit to another — seconds, minutes, hours, days, weeks, months, or years.

The How Many Seconds in a Day tool instantly converts between time units — from seconds and minutes to days, years, or even nanoseconds. It updates automatically as you type, giving you quick and accurate results without any extra clicks. Whether you’re a developer, student, or just exploring how time works, this converter makes it simple and clear.

Examples:

  • 1 Day = 86,400 Seconds
  • 1 Hour = 3,600 Seconds
  • 1 Week = 604,800 Seconds
  • 1 Month (average) = 2,629,800 Seconds
  • 1 Year = 31,557,600 Seconds
  • 1 Minute = 60,000 Milliseconds
  • 1 Nanosecond = 0.000000001 Seconds