Download your Word document
Earth Curvature Drop Approximation Calculator result sheet — free, supported by sponsors. Your download button appears in 20 seconds.
This free download is supported by sponsors — continuing in
20
Your file is generated in your browser when you choose Download — nothing is uploaded. If this calculator returns enough numeric data, the export also includes its best-fit chart alongside the readable table.
WorldCalculate result export
Earth Curvature Drop Approximation Calculator — result sheet
Estimate geometric curvature drop over a supplied surface distance using a spherical Earth approximation.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Drop≈distance²/(2×radius) after converting the distance to the same unit as radius.
This is a local small-angle approximation, kept separate from refraction, observer height, and line-of-sight calculations.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Surface distance — minimum 0; maximum 100000
- Earth radius — minimum 1; maximum 100000
Worked example
| Input | Value |
|---|---|
| Surface distance | 10 |
| Earth radius | 6371 |
Approximate drop =0.00785 km =7.85 m.
Assumptions and limits
- Distance and radius use kilometres and the distance is small relative to the radius.
- A spherical surface and tangent-plane approximation are used.
- Atmospheric refraction, terrain, observer height, and geodesic path details are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
No saved result was found. Please run the calculation first, then choose Download again.