FOV Calculator

Lock any 2 of screen size, viewing distance, or FOV — the others are computed automatically.

Free & unlimitedWorks offline

Lock the values you know (2 of 4 locked)

Game FOV (HFOV) (°)

Viewing FOV (HFOV) (°)

Screen size (in)

Viewing distance (cm)

Aspect ratio

Viewing angle

Horizontal FOV

49.4°

Vertical FOV

29.0°

Diagonal FOV

55.6°

Screen width

59.8 cm

Game-specific FOV values

Game	Default HFOV	Default VFOV	Note
CS2 / Valorant	106.26°	73.74°	Fixed 106 HFOV at 16:9, varies with aspect ratio
Apex Legends	110°	70°	Slider 70-110, default 70 (70 is vFOV)
Overwatch 2	103°	71°	Slider 80-103 HFOV
Fortnite	80°	59°	Default 80 HFOV (slider available)
Battlefield 2042	95°	65°	Default 74-105 vFOV
Call of Duty	120°	80°	80-120 FOV slider
Escape from Tarkov	75°	59°	50-75 vFOV
Rainbow Six Siege	90°	59°	60-90 FOV slider

FOV uses HFOV = 2 · atan(W / 2D) where W is screen width and D is viewing distance. VFOV = 2 · atan(tan(HFOV/2) / aspect). This gives your physical field of view, which may differ from in-game FOV settings.

All processing happens in your browser. No data is sent to any server.

About this tool

1
Enter monitor specs
Input your monitor size (diagonal inches), resolution, and aspect ratio.
2
Set your viewing distance
Measure and enter the distance from your eyes to the monitor in cm or inches.
3
Choose FOV type
Select horizontal, vertical, or diagonal FOV and your game's FOV measurement method.
4
View recommendations
See the calculated optimal FOV and convert between different game FOV systems.

A FOV that is too wide causes fisheye distortion at the edges; too narrow feels like tunnel vision.
Sitting closer to your monitor generally benefits from a wider FOV setting.
Some games measure FOV vertically (Overwatch) while others use horizontal (CS2) - this tool converts between them.