To get
how big is a photo 4x6. At 300 DPI, a 4x6 photo should be roughly 1200 x 1800 pixels. This will ensure a sharp, vibrant print - just the quality you're looking for.
Visuals Clipping explains how to get the right pixel dimensions using your editing tools to match print size requirements. When you get the ratio of pixels to inches just right, you can be sure your photos will look professional whether you view them on screen or print them out. But getting this right is important to avoid the hassle of pixelation or unexpected cropping during printing.