Declination & Pace Calculator | Prepper Field Guide

Your Leg

Grid azimuth from the map (degrees)

Declination (degrees West)

Default 14.0 W suits New York's Capital Region and Hudson Valley, where declination runs about 13.1 to 14.8 degrees West. Always confirm the current value for your exact location before a trip.

Distance (meters)

Terrain

Your pace count, double-paces per 100 m on flat ground

Most adults fall between 62 and 68. Calibrate yours on a measured 100 m course - the workbook shows how.

Walk This

Magnetic azimuth (set your compass)
Back azimuth (magnetic, your way back)
Adjusted pace count per 100 m
Total double-paces for the leg

Rules used: with West declination, Grid to Magnetic = ADD the declination; Magnetic to Grid = SUBTRACT. Back azimuth = azimuth +/- 180. Pace adjustments: +10% moderate slope, +20-25% steep slope, brush, or snow. Totals multiply the unrounded adjusted rate and round only the final figure - the same convention as the workbook, so the two always agree. Full method, worked examples, and practice exercises with an answer key: the Off-Grid Land Navigation Workbook from Prepper Field Guide.

GO FURTHER

Learn the whole system: declination, back azimuths, pace calibration, worked examples, and field exercises with an answer key.

Get the Off-Grid Land Navigation Workbook - $12

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