How does the Asteroid Impact Calculator work?

Input asteroid diameter/mass and impact velocity Then: Calculate kinetic energy and TNT equivalent Then: Estimate crater size and damage radius.

Can you give an example of how to use the Asteroid Impact Calculator?

Example: Input 10 km asteroid, 20 km/s impact velocity gives a result of 10¹⁸ J energy (100 million megatons TNT), extinction-level event (65 Mya extinction).

Is the Asteroid Impact Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Asteroid Impact Calculator?

Our Asteroid Impact Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Asteroid Impact Calculator

Asteroid Diameter (km)

Impact Velocity (km/s)

Density (kg/m³)

Asteroid impact calculator estimates energy release, crater size, and environmental effects based on impact velocity, size, and composition.

Difficulty:intermediate

References

›Asteroid Impact — Wikipedia

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Asteroid Impact Calculator

Asteroid Impact Calculator

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Asteroid Impact Calculator