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Time Converter

Convert time durations between seconds, minutes, hours, days, weeks, and years. Free, private, and instant browser-based converter.

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How to use Time Converter

  1. 1

    Enter your time duration value.

  2. 2

    Select your starting unit (seconds, minutes, hours, days, weeks, years).

  3. 3

    Select your target unit and click Convert.

Capabilities

  • Converts time intervals between seconds, milliseconds, minutes, hours, days, and weeks
  • Supports decimal time and mixed calendar unit equivalents
  • Fast, accurate calculations for payroll, scheduling, and engineering

How Time Duration & Interval Conversions Work

Time duration measurement calculates the elapsed interval between events. Unlike purely decimal systems, standard time uses a mixed base: 60 seconds per minute, 60 minutes per hour, 24 hours per day, 7 days per week, and 365.25 days per astronomical calendar year. Payroll processing, project management, and scientific computing require converting between decimal hours and raw seconds.

Time Scaling Constants (Base: Second)

1 Minute: 60 s
1 Hour: 3,600 s
1 Day: 86,400 s
1 Week: 604,800 s
1 Year: 31,536,000 s

Worked Example: Converting 72 Hours to Days

Base Seconds: 72 hours * 3,600 s/hour = 259,200 seconds

Target Days: 259,200 seconds / 86,400 s/day = 3.0 days

Result: A 72-hour project sprint corresponds to exactly 3 standard days.

Counting Business Days Between Dates?

Calculate net working weekdays excluding Saturdays and Sundays.

Working Days
Privacy & Processing

This tool operates in a sandbox directly inside your web browser. All parsing, processing, and downloads are rendered locally. Your file size, metadata, and contents never cross the network. It works completely offline.

Frequently Asked Questions

How many seconds are in 24 hours (one day)?

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

How do you convert minutes to decimal hours?

Divide the number of minutes by 60. For example, 45 minutes / 60 = 0.75 hours. 90 minutes / 60 = 1.5 hours.

How many hours are in one week?

One standard 7-day week contains 168 hours (7 days * 24 hours = 168 hours).

What time duration units are supported?

The tool converts between seconds, milliseconds, minutes, hours, days, weeks, and calendar years.

Is this time converter free to use?

Yes. It processes time conversions locally in your browser with zero limits and no signup.

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