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Instagram gives you plenty of ways to show up — feed images, carousels, reels, and stories — each with unique Instagram post sizes. When your visuals match Instagram ’s recommendations, you give your posts the best chance of standing out and getting that all-important social media engagement. The recommended Instagram Story size is 1080 x 1920 pixels with an aspect ratio of 9:16 for both images and videos. Here are the exact Instagram Story dimensions, sizes and ratios for your photos, images and videos. Post the best Story quality. So let’s clear it up once and for all: The best Instagram Story size in 2025 is 1080 × 1920 pixels , with an aspect ratio of 9:16. That’s the standard vertical format that fills the entire screen of most smartphones without black borders or awkward zooming.
