Time Duration Calculator

Calculate the duration between two times.

About this tool

Enter the start time and end time. The tool will calculate the total hours and minutes, along with the decimal equivalent....

Calculation Results

Enter values to see the result.

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Understanding Time Duration Calculations

Our Time Duration Calculator is the perfect tool for tracking hours worked, session lengths, or any interval between two specific times. Whether you're an employee calculating your daily hours, a student timing a study session, or a gamer tracking play time, this tool provides clear and instant results.

Calculating time manually can be error-prone, especially when dealing with the transition between am/pm or when an interval crosses the midnight threshold. Our tool handles these logic challenges automatically. If you enter a start time that is later than the end time, our engine assumes the interval crosses into the next day, giving you the correct total duration.

Key Benefits for Professional Use

  • Decimal Hours: Perfect for payroll systems that require time in decimal format (e.g., 8h 30m = 8.5 hours).
  • Total Minutes: Useful for precise tracking or when calculating flat rates based on minutes.
  • Automatic Overnight Logic: No more manual math when a shift starts at 10 PM and ends at 6 AM.
  • Simple Inputs: Uses the native browser time picker for a smooth, consistent experience.

Productivity tracking starts with understanding how you spend your time. By accurately measuring durations, you can better manage your schedule, improve billing accuracy, and gain insights into your daily habits. Start calculating your durations today with our free, easy-to-use tool.

How to calculate time intervals

1

Set Start Time

Select the time the interval begins using the time picker.

2

Set End Time

Select the time the interval ends. The duration will update automatically.

3

Analyze Results

Note the 'Duration Text' for a human-readable format and 'Decimal Hours' for spreadsheets or payroll.

Time Duration FAQs

Does it work past midnight?

Yes! If the end time is earlier than the start time, the tool logically assumes the event concluded on the following day.

How is 'Decimal Hours' calculated?

By dividing the total minutes by 60. For example, 45 minutes becomes 0.75 hours.

Can I use this for my timesheet?

Definitely. It's specifically designed to output formats (h/m and decimal) commonly used in professional environments.

Reliable Tracking

Built for professionals who need accurate time tracking without the complexity.

Error-Free Logic: Handles am/pm and overnight transitions correctly.
Instant Processing: Results update as soon as you change the inputs.
Professional Formats: Provides both standard and decimal hour outputs.