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Both calculators run independently — change the inputs on either side to compare results.

Asteroid Impact Energy Calculator

Calculate the kinetic energy released when an asteroid strikes Earth, expressed in megatons of TNT. Use it to compare historical impacts or assess the potential effect of a hypothetical impactor.

Asteroid Diameter (m)

Impact Velocity (km/s)

Asteroid Density

Impact Angle (°)

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Astronomy

Light Travel Time Calculator

Find how long light takes to travel any astronomical distance. Useful for understanding how old the light from distant stars and galaxies is when it reaches Earth.

Distance (light-years)

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Key differences

	Asteroid Impact Energy Calculator	Light Travel Time Calculator
Category	Astronomy	Astronomy
Inputs required	4	1
Result	Impact Energy (megatons TNT)	Light Travel Time (years)
What it does	Calculate the kinetic energy released when an asteroid strikes Earth, expressed in megatons of TNT. Use it to compare historical impacts or assess the potential effect of a hypothetical impactor.	Find how long light takes to travel any astronomical distance. Useful for understanding how old the light from distant stars and galaxies is when it reaches Earth.