Compare calculators

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

Geographic Midpoint Calculator

Find the true geographic center between two GPS coordinates, with optional weighting for each location. Useful for choosing a meeting point, logistics hub, or central headquarters between multiple sites.

First Location Latitude (°)

First Location Longitude (°)

Second Location Latitude (°)

Second Location Longitude (°)

First Location Weight (factor)

Second Location Weight (factor)

Fill in the required fields to see your result.

Geography

Earthquake Distance Calculator

Estimate the distance from a seismograph station to an earthquake epicenter using the arrival time difference between P and S seismic waves. Useful for seismology education and rapid preliminary epicenter location.

P Wave Arrival Time (seconds)

S Wave Arrival Time (seconds)

Fill in the required fields to see your result.

Key differences

	Geographic Midpoint Calculator	Earthquake Distance Calculator
Category	Geography	Geography
Inputs required	6	2
Result	Midpoint Latitude (°)	Epicenter Distance (km)
What it does	Find the true geographic center between two GPS coordinates, with optional weighting for each location. Useful for choosing a meeting point, logistics hub, or central headquarters between multiple sites.	Estimate the distance from a seismograph station to an earthquake epicenter using the arrival time difference between P and S seismic waves. Useful for seismology education and rapid preliminary epicenter location.