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

Urban Sprawl Index Calculator

Measure urban sprawl by comparing the percentage growth of built-up urban area to population growth. Used by urban planners and geographers to assess land-use efficiency.

Urban Area Growth (%)

Population Growth (%)

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

	Urban Sprawl Index Calculator	Magnetic Declination Adjuster
Category	Geography	Geography
Inputs required	2	2
Result	Urban Sprawl Index	True Bearing (°)
What it does	Measure urban sprawl by comparing the percentage growth of built-up urban area to population growth. Used by urban planners and geographers to assess land-use efficiency.	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.