IGC Webview

A free browser-based tool for viewing IGC format tracks and barograph traces from gliding loggers.

© 2016 Alistair Malcolm Green and Richard Brisbourne

OpenStreetMaps version 2018/2019 by Chris Fox

Warning: Airspace data is not valid for flight planning or navigation

Always consult the official publications for current and correct information.



Select Task Source

You may enter BGA trigraphs, six character codes for waypoints on the Welt2000 database or Lat/Long in either 'dd:mm.mmm N ddd:mm.mmm W' or 'dd:mm:ss N ddd:mm:ss W' format. Start and finish must be filled in, blank turning points will be ignored.

Start:   TP1:   TP2:   TP3:   TP4:   Finish:


Flight Information




Control Sectors

Start Line:
Radius: Km

Sector type:  

Turning Points:
  radius: Km

 radius: Km

Time: Hrs  Mins

Radius: Km  

Save configuration:

Select units:


Climb rate:

Cruise Speed:

Task Speed:

Task Distance:

ENL engine detect:  

Threshold: (1-1000)

Time required: seconds

Save configuration:

Altitude reference

*With pressure source, reference 1013.25 mb. With GPS, raw file data

Data Source


Glider altitude:

Terrain height:

Height AGL:

Information on this thermal:

Thermal entry :

Thermal exit:

Net Gain:

Average climb rate:

Estimated wind: °

Distance Measuring tool: