Aspect Ratio FOV Calculator
Calculate how field of view changes when switching between different aspect ratios.
Aspect Ratio FOV Calculator
Target FOV
105.39° H
58.72° V | More horizontal visibility
FOV Comparison
Base (16:9)
H: 90°V: 58.72°
Target (21:9)
H: 105.39°V: 58.72°
Changes
Horizontal FOV Change+15.39°
Vertical FOV Change+0.00°
Aspect Ratio Change+31.3%
Scaling Methods Explained
Hor+ (Recommended)
Keeps vertical FOV, adds horizontal. You see more on the sides without losing anything.
Vert-
Keeps horizontal FOV, reduces vertical. You lose top/bottom visibility.
Stretch
No FOV change, image is stretched. Objects appear wider.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.