Time Duration Calculator
This versatile tool helps you with all your time-related calculations. You can find the exact duration between two dates and times, or you can add or subtract a specific amount of time from a starting date. It's perfect for project planning, counting down to an event, or managing schedules.
Calculated Duration
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Days
1
Hours
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Minutes
0
Seconds
Precise Calculations
Accurately calculate the duration between two points in time, down to the second.
Instant Results
All calculations happen instantly in your browser with a responsive and clear interface.
Easy To Use
An intuitive interface for both calculating duration and adding or subtracting time from a date.
Works Anywhere
This is a browser-based tool, requiring no installation. It works seamlessly on any modern device.
Privacy Guaranteed
No dates or calculations are ever sent to a server. Everything happens locally on your device.
Completely Free
A powerful date and time calculator available for free, without registrations or watermarks.
Master Your Timeline
Calculate Duration Between Two Dates
Need to know exactly how long you have until a deadline? Or how old you are in days? The "Calculate Duration" tab lets you input a start and end date (and time) to find the precise difference. The result is broken down into days, hours, minutes, and seconds, giving you a complete picture. For calculating age from a date of birth, try our dedicated Age Calculator.
Add or Subtract Time from a Date
Planning an event in 90 days? Need to know what the date was 6 months ago? The "Add/Subtract Time" tab is your go-to tool. Enter a starting date, specify the amount of time to add or subtract, and the calculator will instantly show you the new date and time. It’s perfect for future planning or historical lookups.