How it works
Fill in the 2 fields above and Time Dilation Calculator calculates the result instantly, recalculating as you change any value. It applies the formula Δt = Δt₀ / √(1 − v²/c²). The math runs locally in your browser — nothing is sent to a server.
Formula
Δt = Δt₀ / √(1 − v²/c²)Examples
- Proper time 1 s, Velocity 80 % of c → Dilated time: 1.6667 s
Frequently asked questions
How do I use the Time Dilation Calculator?
Enter your values in the 2 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Time Dilation Calculator use?
It uses Δt = Δt₀ / √(1 − v²/c²). The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Time Dilation Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Time Dilation Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on science and the rest of the platform, you can use it as often as you like.
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