Binoculars Range Calculator
Free calculate the maximum viewing range and optical properties of binoculars based on magnification and objective lens specifications.
Input Parameters
Height of the object you want to view
Results
Enter parameters to calculate binocular range
Binoculars Specifications
Key Formulas
- • Exit Pupil = Objective Diameter / Magnification
- • Relative Brightness = (Exit Pupil)²
- • Maximum Range ≈ Object Height × Magnification × 1000
- • Twilight Factor = √(Magnification × Objective Diameter)
Common Binocular Specs
- • 8×42: General purpose, good for birding
- • 10×50: Astronomy and long-range viewing
- • 7×35: Wide field, low magnification
- • 12×50: High magnification, astronomy