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Free 21:9 aspect ratio calculator. Find width or height for ultrawide monitors, cinema, and gaming. Supports 2560x1080, 3440x1440, 5120x2160, and any custom dimension. Includes pixel count and diagonal.

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21:9 Aspect Ratio Calculator

Free 16:9 aspect ratio calculator. Find width or height for widescreen HD/4K video, monitors, and YouTube. Supports 1920x1080, 1280x720, and any custom dimension. Includes pixel count and diagonal.

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16:9 Aspect Ratio Calculator

Free 9:16 aspect ratio calculator for vertical video, TikTok, Reels, Shorts, and mobile stories. Find width or height for 1080x1920, 720x1280, and custom sizes.

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9:16 Aspect Ratio Calculator

Free 4:3 aspect ratio calculator for classic monitors, projectors, and presentations. Find width or height for 1024x768, 1600x1200, and custom sizes.

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4:3 Aspect Ratio Calculator

Free 3:2 aspect ratio calculator for DSLR photography, prints, and images. Find width or height for 3000x2000, 3600x2400, and custom sizes.

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3:2 Aspect Ratio Calculator

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1:1 Aspect Ratio Calculator

Free aspect ratio calculator. Find the aspect ratio from width and height, or calculate a missing width or height from a known ratio. Supports 16:9, 4:3, 21:9, 3:2, 1:1 and any custom ratio, with diagonal length and nearest-standard matching.

Calculators

Aspect Ratio Calculator

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