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Slope Distance & Horizontal Distance Calculator

Reduce a slope distance to horizontal distance using a vertical angle or an observed elevation difference.

Angle from the horizontal. Positive/negative gives elevation/depression.
Leave blank to calculate from vertical angle. If entered, it takes priority.
Reset

How to use this calculator

What to enter

Enter or select the following as requested: Slope Distance; Vertical Angle (degrees); OR use Elevation Difference. Follow the units, valid ranges, examples, and options displayed beside each field.

What the result means

The geometric result is derived from the dimensions, coordinates, or angles entered and the shape or relationship named by the calculator. Confirm that lengths use consistent units, angles use the selected degree/radian setting, and the points or dimensions satisfy the required geometric conditions.

When to use it

Use this to solve a geometry or trigonometry problem or check a design measurement. Verify units and assumptions before using the result for construction, surveying, or other precision work.