Gaming · Free tool
FOV Calculator
Convert field of view between aspect ratios and games. Horizontal + vertical FOV using Hor+ formula.
Updated April 2026
Converted horizontal FOV
105.39°
Vertical FOV (new)
58.72°
Vertical FOV (source, for Source-engine games)
58.72°
Game FOV presets
| CS2 | 90° (default, fixed) |
| Valorant | 103° (max, fixed) |
| Apex Legends | 70–110° |
| Overwatch 2 | 80–103° |
| Fortnite | 80–120° |
Uses the Hor+ formula: fov_new = 2 × atan(tan(fov_old/2) × (aspect_new / aspect_old)). Matches what modern FPS games do when you widen your monitor.
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What it does
Keep the same visual field when switching monitors or aspect ratios. Hor+ formula with 5 aspect-ratio presets and game defaults.
Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/fov-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="FOV Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter current FOV and aspect ratio.
- Pick the target aspect ratio.
- Read horizontal + vertical FOV.
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