Home
Back
Image Resolution Formula:
| From: | To: |
Image resolution refers to the total number of pixels contained in a digital image, typically expressed as width × height. It determines the level of detail and clarity in an image, with higher resolutions providing more detailed and sharper images.
The resolution is calculated using the formula:
Where:
Explanation: Each pixel represents a single point in the image, and the total resolution is simply the product of the number of pixels along the width and height dimensions.
Details: Image resolution is crucial for determining image quality, print size capabilities, and suitability for different applications. Higher resolutions allow for larger prints without pixelation and provide more detail for editing and zooming.
Tips: Enter the width and height of your image in pixels. Both values must be positive integers greater than zero. The calculator will compute the total number of pixels in the image.
Q1: What's the difference between resolution and DPI?
A: Resolution refers to the total number of pixels in an image, while DPI (dots per inch) refers to printing density - how many pixels are printed per inch on physical media.
Q2: What are common image resolutions?
A: Common resolutions include 1920×1080 (Full HD), 3840×2160 (4K UHD), 7680×4320 (8K UHD), and standard photo sizes like 3000×2000 or 6000×4000.
Q3: How does resolution affect file size?
A: Higher resolution images contain more pixels, which generally results in larger file sizes, though compression algorithms can reduce this relationship.
Q4: What is megapixel count?
A: Megapixels represent resolution in millions of pixels. A 12-megapixel image has approximately 12 million total pixels (e.g., 4000×3000 = 12,000,000 pixels).
Q5: Does higher resolution always mean better quality?
A: While higher resolution can provide more detail, other factors like sensor quality, lens sharpness, and image processing also significantly impact final image quality.