Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Upright object with visible top. Distance must be horizontal, and eye offset referenced to the base elevation.
Example Calculation
- Horizontal distance: 10
- Elevation angle to top: 45 °
- Observer eye height above base elevation: 1.5
Horizontal distance = 10; Elevation angle to top = 45; Observer eye height above base elevation = 1.5. Primary result: 11.5.
Frequently asked questions
How do I use this calculator?
Enter horizontal distance, elevation angle to top, observer eye height above base elevation. The result updates automatically. Use Reset to restore the example values.
What method does it use?
height=horizontal distance ×tan(angle)+eye-level offset.. Upright object with visible top. Distance must be horizontal, and eye offset referenced to the base elevation.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.