Compare calculators

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 (°)

Fill in the required fields to see your result.

Astronomy

Exoplanet Habitable Zone Calculator

Estimate the inner and outer boundaries of a star's habitable zone based on its luminosity, spectral type, and a planet's mass. Use it when assessing whether a known exoplanet could support liquid water on its surface.

Star Luminosity (solar luminosity)

Stellar Classification

Planet Mass (Earth masses)

Fill in the required fields to see your result.

Key differences

	Asteroid Impact Energy Calculator	Exoplanet Habitable Zone Calculator
Category	Astronomy	Astronomy
Inputs required	4	3
Result	Impact Energy (megatons TNT)	Optimal Habitable Distance (AU)
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.	Estimate the inner and outer boundaries of a star's habitable zone based on its luminosity, spectral type, and a planet's mass. Use it when assessing whether a known exoplanet could support liquid water on its surface.