Navigation Calculators

Free navigation calculators.
Great circle distance, bearing, magnetic declination, ETA, and waypoint tools for any journey.

Calculate the true compass bearing from one location to another using latitude and longitude. Get the exact heading for any route.

Convert between true north, magnetic north, and compass heading. Apply variation and deviation corrections for accurate navigation.

Calculate your estimated time of arrival from current position, distance remaining, and speed. Works for driving, sailing, hiking, and flying.

Calculate fuel required for each leg of a journey. Plan fuel stops for sailing, boating, or long-distance driving routes.

Calculate the shortest distance between any two points on Earth using latitude and longitude. Uses the Haversine formula for accurate results.

Convert between true north and magnetic north. Apply the correct declination to your compass bearing for accurate navigation anywhere in the world.

Calculate speed, distance, or time from any two known values. Works for any mode of transport — sailing, driving, cycling, running.

Calculate sunrise and sunset times for any date and location. Find day length, golden hour, and civil twilight times.

Calculate your estimated position from a known starting point using heading, speed, and elapsed time. Works on land, sea, and air.

Calculate the wind correction angle (crab angle) needed to fly or sail a straight course in crosswind conditions.