FieldengGeospatial & Survey
Heading / Azimuth Conversion
Wrap a heading to [0°, 360°) and add magnetic declination (east positive) to get true bearing.
Geospatial & Survey
Wrap a heading to [0°, 360°) and add magnetic declination (east positive) to get true bearing.
App id: GEO-17. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
true = wrap(heading + declination)Inputs
| Name | Unit |
|---|---|
| Heading | deg |
| Declination (east +) (optional) | deg |
Outputs
| Name | Unit |
|---|---|
| Normalized heading (hero result) | deg |
| True bearing | deg |
Diagnose
This tool does not attach diagnose observations.
Assumptions
- Leave declination blank when the heading is already true. East declination is positive.
Provenance
- No IGRF model. Enter the declination from a current chart if converting magnetic to true.