Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Photography
Print Size Resolution Calculator
Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab.
Fill in the required fields to see your result.
Photography
Magnification Ratio Calculator
Calculate the magnification ratio of a lens at a given subject distance β the ratio of subject image size on the sensor to actual subject size. Use it for macro photography planning to predict how large your subject will render and to choose between dedicated macro lenses, extension tubes, or close-up filters.
Fill in the required fields to see your result.
Key differences
| Print Size Resolution Calculator | Magnification Ratio Calculator | |
|---|---|---|
| Category | Photography | Photography |
| Inputs required | 4 | 2 |
| Result | Required File Size (MB) | Magnification Ratio (:1) |
| What it does | Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab. | Calculate the magnification ratio of a lens at a given subject distance β the ratio of subject image size on the sensor to actual subject size. Use it for macro photography planning to predict how large your subject will render and to choose between dedicated macro lenses, extension tubes, or close-up filters. |