Horizontal Field of View
A rectilinear lens's horizontal angle of view follows sensor width and focal length.
Horizontal Field of View
Optics · 2 inputs
How to use this calculator
- Enter sensor width in mm.
- Enter focal length in mm.
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Keep capture settings, physical dimensions and delivery requirements in separate columns of the job notes. A mathematically equivalent setting may change motion blur, depth of field or noise. Check an actual frame before committing an entire session to a numerical estimate.
The model approximates focus at infinity and excludes fisheye projection and strong distortion.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
Related calculations
Vertical Field of View
Vertical angle of view uses the sensor's shorter dimension for a landscape-oriented frame.
Open calculator ↗Sensor Diagonal
The sensor diagonal supports format comparisons and diagonal field-of-view calculations.
Open calculator ↗Diagonal Crop Factor
A diagonal crop factor compares the sensor diagonal with a 36 by 24 millimetre reference.
Open calculator ↗