WebToolArcInverse MP math
For target megapixels and aspect ratio r = width/height, height = √(pixels ÷ r) and width = r × height. Integer rounding changes the final MP slightly, so the studio reports the actual rounded result.
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Megapixel Calculator
Convert between pixel dimensions, megapixels and print requirements, then audit aspect ratio, common display formats, print density, standard print sizes and raw raster payload locally in your browser.
browser-local · pixels ↔ MP ↔ print
Pixel-count evidenceImage Resolution & Print Studio
Move between pixel dimensions, megapixels and print requirements, then inspect aspect ratio, named resolutions, print-density limits, standard-size fit and exact raw raster payload without uploading an image.
The image stays in this browser tab. The helper reads browser-decoded pixel dimensions and file bytes; it is not a metadata/DPI parser.
24.00 MP6,000 × 4,000 px
24,000,000Total pixels
3:2Exact integer ratio
3:2Closest common ratio
CustomNamed resolution
20 × 13.33 inMax print at chosen PPI
68.66 MiBRaw raster payload
No local fileLoaded file bytes
Resolution frame
Print size across common PPI values
| Density | Maximum physical size | Context |
|---|
Standard print fit audit
| Effective PPI | Crop loss | Orientation | Band |
|---|
Print-fit evidence
Standard-size effective PPI uses the best orientation and a crop-to-fill model. Crop loss estimates pixel area discarded only to match the print aspect ratio; it is not a print-quality score.
Local image helper
A chosen image is decoded locally only to populate browser-reported pixel dimensions and show its actual compressed file bytes. It is not uploaded and the file itself is never placed in a share link or local saved settings.
Core image workflows
Use a flagship page for the highest-demand resize, compression, crop and conversion jobs; specialist image tools remain available from the full hub.
Image ResizerResize by pixels or percentageImage CompressorReduce file size with controlsImage CropperCrop visually or by coordinatesImage ConverterConvert JPG, PNG and WebPJPG to PNGConvert JPEG into PNGPNG to JPGExport PNG as JPEGHEIC to JPGConvert phone HEIC/HEIF photosWebP to JPGExport WebP as JPEG
Megapixels are area, not a quality guarantee
Megapixels equal width × height ÷ 1,000,000. That tells you how many samples are in the raster, but not whether a lens was sharp, focus was accurate, noise reduction smeared detail, motion blurred the exposure, or an image was previously upscaled.
Use PPI for image-to-print planning
For a raster image, physical print size at a chosen PPI is pixel dimension ÷ PPI. PPI is an image sampling density. Printer DPI is a device-marking density and may use multiple printer dots to reproduce one image pixel, so the two should not be treated as interchangeable specifications.
Work backward from a print requirement
If the job is an 8 × 10 inch print at 300 PPI, the minimum raster dimensions are 2,400 × 3,000 pixels, or 7.2 megapixels. The print-requirement mode performs that inverse calculation directly for inches, centimetres or millimetres.
Aspect ratio can force cropping
A 3:2 photo does not fit an 8×10 (4:5) print without cropping or borders. The standard print-size audit rotates the print when useful, then reports the effective PPI for crop-to-fill and the approximate pixel-area crop loss. It does not silently stretch the image.
File size needs an explicit assumption
Width × height × channels × bits per channel gives the tightly packed sample payload before row/channel padding. Real image formats may store 10/12-bit samples in wider containers, and compressed JPEG/HEIC/RAW/TIFF sizes are content- and codec-dependent, so this studio does not present a guessed compressed size as a fact.
Local-file privacy and metadata limits
The optional image helper stays in the browser and reads the browser-decoded dimensions plus actual file byte size. It is a convenience input, not a metadata/DPI/EXIF forensic parser; orientation and decoder behavior can vary by browser and format.