CalculateTime Differencein Seconds or Years
Use our free Time Difference Calculator to find the precise gap between any two dates or times — from seconds all the way up to years.
Time Difference Calculator
Features
Accurate to the Second
Leverages native Date APIs to return precise results down to 1-second granularity.
Supports Date & Time
Freely combine calendar dates and exact times for versatile use-cases.
Timezone-Aware
Works flawlessly with your local timezone — no surprises across regions.
How It Works
- 1Enter the start date & time.
- 2Enter the end date & time.
- 3Click "Calculate" to see the difference in all units.
- 4Copy the result or tweak the inputs as needed.
What Is a Time Difference Calculator?
A time difference calculator (also known as a date duration calculator) quickly works out the exact amount of time separating two moments. Whether you need the time gap between project milestones, travel dates or historical events, our calculator returns accurate results in every common unit.
Key Benefits of This Time Difference Calculator
- Supports years, months, days, hours, minutes and seconds in one click.
- Handles future and past dates with automatic ordering — no manual swapping.
- Timezone-aware calculations eliminate regional confusion.
- Fast, lightweight and 100% free without sign-ups.
Test the Time Difference Calculator above and discover exactly how much time separates your two chosen dates.
FAQ
Is the calculator free to use?
Yes — all features are 100% free with no sign-up required.
Does it support milliseconds?
The current version focuses on seconds accuracy. Millisecond support is on our roadmap.
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