Additional menu

Tablet Expert

Unbiased Tablet Reviews

FREE ONLINE TOOL

Image Resizer & Converter

Resize images without stretching, convert to WebP, JPG or PNG, and download instantly.

IMAGE TOOL

Image Resizer & Converter

Upload an image, choose a new size and download it in your preferred format.

Original dimensionsUpload an image to start
New dimensions↗ Aspect ratio locked
Quick sizes
Upload an image to get started.
Image previewOriginal
Your image previewSee your photo here after uploading
Aspect ratio: —Megapixels: —
✓ Free to use  ·  ✓ Processes in your browser  ·  ✓ No account needed

How to use Image Dimensions & Aspect Ratio Calculator

Use the tool above to enter or upload your input, adjust the available options, and review the result. Save or copy the output when you are satisfied.

What to know before using the results

Results depend on your inputs and device capabilities. For image tools, large files may require additional processing time and memory. Always inspect the final output before using it in a project.

Frequently asked questions

Answers to common questions about using this tool.

The proportional relationship between image width and height, such as 16:9 or 4:3.
No. This calculator provides dimensions and estimates; it does not alter or export an image.
Megapixels measure total pixels. PPI describes pixel density at a particular print size.

Explore More Free Tools

Try other useful utilities from Tablet Expert.

FREE TOOLBackground RemovalRemove image backgrounds with on-device AI and download a transparent PNG.Open tool →FREE TOOLJSON Formatter & ValidatorFormat, minify and validate JSON with readable error feedback.Open tool →FREE TOOLUUID GeneratorGenerate random UUID v4 identifiers securely in your browser.Open tool →FREE TOOLImage OptimizerCompress JPEG, PNG and WebP images locally in your browser.Open tool →