Geo & Map Calculators

GPS Coordinate Distance Calculator

Find the great-circle distance between two GPS coordinates — the straight-line 'as the crow flies' distance across the curved surface of the Earth.

Trip Time Calculator

Estimate travel time from distance and average speed — a quick way to sanity-check how long a road trip, flight, or journey should realistically take.

GPS Midpoint Calculator

Find the geographic midpoint between two GPS coordinates — the point exactly halfway along the great-circle path, not simply the average of the two coordinates.

DMS to Decimal Degrees Calculator

Convert a degrees-minutes-seconds coordinate into decimal degrees — the format almost all modern digital mapping tools and GPS systems use internally.

Land Area Cost Calculator

Find the total price of a plot of land from its area and price per unit — and see the equivalent size in acres for easier comparison across listings.

Elevation Grade Calculator

Find the grade (slope percentage) of a hill or road from rise and run — the standard way steepness is measured and posted on road signs.

Map Scale Calculator

Convert a distance measured on a map into real-world distance using the map's scale — the ratio printed on nearly every topographic and reference map.

Decimal Degrees to DMS Calculator

Convert a decimal-degree coordinate into degrees, minutes and seconds — the traditional coordinate format used on nautical charts, surveys, and older maps.

Bearing Calculator

Find the initial compass bearing from one GPS coordinate to another — the heading you'd start out on to follow the shortest path between two points.

GPS Speed Calculator

Find average speed from two GPS coordinates and the elapsed travel time — a quick sanity check for a logged trip using straight-line distance.