Distance, Bearing and Destination Calculator

Build a multi-waypoint route with separate winds, speeds and fuel flows per leg, or convert coordinates and bearings.

Build an ordered mission route with multiple waypoints, set wind, true airspeed and fuel flow for each leg, then send it to the mission fuel planner for automatic totals and reserves. Coordinate and bearing converters and two-point route calculations are also available.

What would you like to do?

Choose one workspace. Your entries stay in place when you switch.

Local calculation: values are processed in your browser. Opening the optional map requests visible-area tiles from OpenStreetMap; waypoint names and flight settings stay in your browser. Optional profiles are stored only in this browser.
Optional aircraft profile: Manual values
Active profile: Manual values

Build a full route with waypoints

Follow the three steps below: add locations, enter the flight conditions, then preview the route and send it to the fuel planner.

1. Add your waypoints in order

Enter a start and a next location. Add more waypoints for each stop or change of course. Distances, time and fuel update as you edit.

Replaces the waypoints and conditions with a three-point example you can edit and calculate.

Place waypoints on a map

Click to place the next waypoint, or drag a numbered marker. Coordinates, leg distances, time and fuel update from your entries.

About map tiles and privacy

Opening the map loads OpenStreetMap tiles for the area you view. Your browser requests those tiles from OpenStreetMap; route calculations stay in your browser.

Waypoint 1
Waypoint 2

A return is optional. Add return to start places the start location at the end of the route. After reordering, check the settings for any new connections.

Next: enter flight conditions

2. Set the conditions for each leg

A leg connects two consecutive waypoints. Enter its airspeed, wind and a measured or representative fuel flow in litres per hour (L/h). The starting values are examples to replace.

What do airspeed and wind direction mean here?

TAS is true airspeed, not indicated airspeed or groundspeed. Wind direction is where the wind comes from, measured from true north. Each leg uses its initial true bearing as a constant track; split long or changing courses into more waypoints.

Next: calculate the route

3. Calculate and check the preview

The preview updates as you edit. Use Calculate full route to check missing or invalid entries, then review each leg before sending the route to the fuel planner.

Coordinate & bearing converter

Convert one location or one bearing. Choose the format you have, select the format you need, then convert and copy the result.

Coordinates

Use this side for a location: latitude/longitude, a grid reference or a pasted pair.

Decimal degrees, degrees/minutes or degrees/minutes/seconds are detected automatically. The two fields may use different formats.

WGS 84 coordinates. UTM and MGRS are supported from 80°S to 84°N; polar UPS references are unavailable. MGRS precision describes the grid square, not location accuracy.

Bearings

Use this side for an angle or direction, such as degrees or mils.

Enter a decimal degree bearing, for example 90.25.

Bearings wrap to one turn, clockwise from north. Unit conversion keeps the same reference: true, magnetic and grid north are not interchangeable. No declination or grid convergence correction is applied. The route calculator uses true bearings.

Distance, bearing and destination

Two ways to use this tool

  1. For distance and bearing: enter the start and end coordinates.
  2. For a new destination: enter the start, a true bearing in your chosen unit and a distance. The end coordinates above are used only for the separate two-point result.
  3. Choose Calculate. Read the matching results, or use the route fuel link beneath them.

The pre-filled coordinates are examples. Replace them with your own, or use the converter workspace to fill a start or end point.

Decimal degrees, DDM or DMS; north positive, south negative or S.
Decimal degrees, DDM or DMS; east positive, west negative or W.
For example: 52 29.172 N or 52 29 10.32 N.
Use the converter above to enter an MGRS grid reference.
Use a true bearing. Units do not change the north reference.

Planning output only. Verify assumptions and results against authoritative data, manufacturer information, approved procedures, test evidence and competent engineering or regulatory review before use.

Calculation basis

Distance uses the haversine formula with a mean Earth radius of 6,371,008.8 metres. Bearings, midpoint and destination use the same spherical-Earth model. The waypoint builder joins adjacent points in the entered order and accepts decimal, degrees/minutes or degrees/minutes/seconds latitude/longitude, MGRS and UTM. Each leg has its own true airspeed, true wind-from direction, wind speed and fuel flow. A wind triangle gives groundspeed, transit time and fuel. Add a return-to-start waypoint when a closed route is needed. Review which mission phases the route replaces, then the fuel planner combines all phases and the selected reserve policy. The two-point and generated-destination fuel links remain available.

Limitations and verification

  • Route geometry does not account for terrain, airspace, magnetic variation or route constraints. The optional fuel connection uses an entered steady wind; it does not obtain weather automatically.
  • Long routes and precision survey work may require an ellipsoidal geodesic implementation.
  • Bearings are true, not magnetic.
  • Wind-adjusted transit uses the initial true course as a constant track for each leg. Split long routes and changing winds or courses into representative phases.

Version and review status

Formula set: v1.2
Staging review date: 17 August 2026
Status: Staging beta pending user acceptance and cross-browser checks.
Software update: 21 October 2026. Multi-waypoint routes and automatic mission fuel calculations v1.7 use reference and synthetic software checks; aircraft performance and operational limits have not been measured or approved by these checks.