Convert horizontal, vertical and diagonal field of view across common aspect ratios using explicit game axes and reference formats.
| Aspect | hFoV | vFoV | Diagonal |
|---|
FoV Calculator is a free, browser-based field of view calculator.
A game preset loads its labeling convention; it does not detect your running game or monitor.
Each row describes one rectilinear camera at a different aspect ratio while holding vertical FOV constant. hFoV is the left-to-right angle, vFoV is the top-to-bottom angle, and diagonal FoV runs corner to corner. The highlighted row is the input reference, not necessarily your physical display.
The calculator provides geometric Hor+ equivalents. It does not convert mouse sensitivity or reproduce ADS zoom, viewmodel FOV, stretched-resolution handling, vehicle cameras, abilities, or dynamic camera states. Fortnite now exposes FOV Minimum and Maximum controls, while generic Call of Duty and Quake conventions vary by title, so those games require Custom mode after you verify the exact setting.
Current presets cover CS2's fixed 90 H on a 4:3 reference, Valorant's fixed 103 H at 16:9, Apex's 70-110 H slider on a 4:3 reference, Overwatch 2 PC's 80-103 H range at 16:9, and Battlefield 2042's 50-105 vertical on-foot range.
If copying the same degree value between games changes the apparent zoom, diagnose why the same FOV number looks different between games. The guide covers reference formats and camera behavior that a bare number cannot describe.
FoV is one leg of the aim stack. The other three are accurate DPI, a stable crosshair, and muscle memory. See how to copy a pro's crosshair in CS2 and Valorant and lock in the visual target that matches the FoV you just calculated.
FoV Calculator FAQ
