1. What is Image Resolution?

Image resolution refers to the total number of pixels in an image, typically expressed as width × height. Higher resolution means more image detail and clarity.

2. How Resolution is Calculated

The resolution is calculated using the simple formula:

Where:

• \( width\_pixels \) — Number of pixels along the width
• \( height\_pixels \) — Number of pixels along the height

Explanation: Multiplying the width and height in pixels gives the total number of pixels in the image, which determines its resolution.

3. Importance of Resolution

Details: Resolution affects image quality, file size, and suitability for different purposes (web display, printing, etc.). Higher resolution images can be printed larger without losing quality.

4. Using the Calculator

Tips: Enter the width and height in pixels (must be positive integers). The calculator will compute the total resolution in megapixels (1 million pixels = 1 megapixel).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between resolution and pixel density (PPI)?
A: Resolution is total pixels, while PPI (pixels per inch) depends on both resolution and physical size of the display/print.

Q2: What are common resolution standards?
A: Common standards include 1920×1080 (Full HD), 3840×2160 (4K UHD), and 7680×4320 (8K UHD).

Q3: Does higher resolution always mean better quality?
A: Only up to a point - beyond what the display can show or the eye can see, higher resolution has diminishing returns.

Q4: How does resolution affect file size?
A: Generally, higher resolution means larger file size, though compression algorithms can mitigate this.

Q5: What's a megapixel?
A: 1 megapixel = 1 million pixels. A 12MP camera captures images with about 12 million pixels total.