Visual Angle Calculator

Visual Angle Calculator calculator can be used to calculate the visual angle of an object based on its size and distance from the observer.

Input Parameters

Calculation Results

Calculation Formula

Visual Angle (θ) = 2 * arctan(Object Height / (2 * Distance))

Where:
θ = Visual Angle in radians
Object Height = Height of the object in meters
Distance = Distance from the observer to the object in meters

Visual Angle Calculator Calculator Usage Guide

Learn how to use the Visual Angle Calculator calculator and its working principles

How to Use the Visual Angle Calculator

  1. Enter the height of the object you're observing in meters (e.g., a person's height is approximately 1.75 meters).
  2. Enter the distance from you to the object in meters.
  3. Click the "Calculate" button to compute the visual angle.
  4. The calculator will display the visual angle in both degrees and radians.

Understanding Visual Angle

The visual angle is the angle subtended by an object at the eye of the observer. It determines how large an object appears to be from a given distance. This calculator is useful in various fields including astronomy, biology, and human perception studies.

Practical Applications

  • Estimating the apparent size of celestial objects.
  • Understanding human visual perception limitations.
  • Designing displays and user interfaces for optimal viewing.
  • Agricultural field analysis and crop monitoring.

Example

If you're standing 10 meters away from a flagpole that is 5 meters tall, the visual angle of the flagpole would be approximately 17.46 degrees. This means that from your position, the flagpole subtends an angle of 17.46 degrees at your eyes.