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Both calculators run independently — change the inputs on either side to compare results.

Elevation Gradient Calculator

Calculate the slope or grade percentage between two geographic points given their elevations and horizontal distance. Essential for cyclists, road engineers, hikers, and drainage planners assessing terrain steepness.

Starting Elevation (m)

Ending Elevation (m)

Horizontal Distance

Distance Unit

Elevation Unit

Fill in the required fields to see your result.

Geography

Magnetic Declination Adjuster

Convert a compass (magnetic) bearing to a true bearing by applying the local magnetic declination. Essential for accurate navigation in hiking, sailing, and surveying where map bearings are true north.

Compass Bearing (°)

Magnetic Declination (°)

Fill in the required fields to see your result.

Key differences

	Elevation Gradient Calculator	Magnetic Declination Adjuster
Category	Geography	Geography
Inputs required	5	2
Result	Grade Percentage (%)	True Bearing (°)
What it does	Calculate the slope or grade percentage between two geographic points given their elevations and horizontal distance. Essential for cyclists, road engineers, hikers, and drainage planners assessing terrain steepness.	Convert a compass (magnetic) bearing to a true bearing by applying the local magnetic declination. Essential for accurate navigation in hiking, sailing, and surveying where map bearings are true north.