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Time Dilation Calculator
Calculate relativistic time dilation for a moving clock.
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Time
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Calculate relativistic time dilation for a moving clock.
Time Dilation Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: γ x proper time.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Time Quick Guide
Typical values for reference.
| Speed %c | Proper yrs | Spare | Observer yrs |
|---|---|---|---|
| 10 | 1 | – | 1.005 |
| 50 | 1 | – | 1.155 |
| 80 | 1 | – | 1.667 |
| 99 | 1 | – | 7.089 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Time Dilation Calculator FAQ
Answers to common questions about this calculator.
Lorentz.
It gives a quick estimate of time dilation from the values you enter.
No. It is a planning estimate, so check important figures with a professional or official source.
Yes. Edit any field and the result updates when you calculate.