Kalkulator Rasio Aspek
Calculate and convert image aspect ratios
100% gratis. Berjalan sepenuhnya di browser Anda - file dan data Anda tidak pernah meninggalkan perangkat Anda dan tidak ada yang diunggah ke server mana pun.
Original Dimensions
Scale to New Size
Common Ratios
Matches These Common Ratios
Tentang alat ini
This calculator helps you work out an image's aspect ratio (like 16:9 or 4:3), or figure out what dimensions to use to match a target ratio - useful when you need to resize an image to fit a specific ratio without distorting it, or just want to know what ratio a set of dimensions represents.
Cara menggunakan alat ini
- Enter your current dimensionsType the width and height you have now, in pixels. The ratio is worked out and simplified as you type.
- Pick a target ratio, or set your ownChoose one of the presets - 1:1, 4:3, 16:9, 3:2, 2:3, 9:16, 21:9, 5:4 or 1.91:1 - or type any custom ratio you need.
- Change one side and read the otherEdit either the width or the height and the opposite value updates to keep the ratio exact, so nothing stretches.
- Use the numbers to resizeCopy the calculated dimensions into your editor, or into the Image Resizer on this site, to apply them.
Mengapa menggunakannya
- Keeps images sharp: resizing to a matching ratio avoids the squashed or stretched look you get from forcing the wrong dimensions.
- Removes the guesswork of dividing width by height and simplifying the fraction by hand.
- Covers the ratios that platforms actually require, including 9:16 for vertical video and 1.91:1 for link previews.
- Runs entirely in your browser with no upload, so you can use it on unreleased work.
Penggunaan umum
- Video editors checking footage is 16:9 or 21:9 before an export.
- Social media managers sizing posts for a 1:1 feed image, a 9:16 story, or a 1.91:1 link card.
- Web designers working out responsive image boxes that hold their shape across breakpoints.
- Photographers converting between 3:2 camera output and 5:4 or 4:3 print sizes.
- Students and teachers fitting images into slides without distortion.
Tips untuk hasil lebih baik
- Ratios are about shape, not size: 1920x1080 and 1280x720 are both 16:9.
- Round to whole pixels at the end. A calculated 1280.5 should become 1280 or 1281, and a half pixel can produce a soft edge.
- Scaling down keeps quality; scaling far above the original will look soft no matter how exact the ratio is.
- If a target ratio does not divide cleanly, crop to the ratio instead of stretching to it.
Kesalahan yang harus dihindari
- Typing a new width and height independently. Change one and let the other be calculated, or the ratio drifts.
- Confusing 16:9 with 9:16. The first is landscape, the second is vertical, and using the wrong one puts bars down the sides.
- Treating aspect ratio as resolution. A 16:9 image can be 640x360 or 3840x2160, and only the second is 4K.
- Enlarging a small image to hit a required size. Match the ratio, then start from the highest-resolution original you have.
Pertanyaan yang sering diajukan
Enter your current dimensions or target ratio, and the calculator works out matching width/height values so you can resize proportionally without stretching the image.
16:9 (widescreen video/YouTube thumbnails), 1:1 (square, social media profile posts), 4:3 (traditional photo/screen), and 9:16 (vertical/story format) are among the most common.
This is a calculator for working out the right dimensions - use the Image Resizer or Crop tool afterward to actually apply those dimensions to your image.
Yes. Aspect Ratio is free for normal use with no account required, and ToolBox does not add a watermark to your result.
Most tools in this category run in your browser so the file stays on your device. If a tool needs a temporary server job, files are handled for that job only and are not kept as a lasting archive.
No install needed. Open Aspect Ratio in your browser, add your file or paste your input, then download or copy the result.
Yes on modern mobile browsers. For large files, a desktop browser is usually faster and more reliable.
Try a different quality or format setting, use a smaller input, or open a related tool (for example compress before convert). Keep a copy of the original file before replacing it.
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