What is 16:9 aspect ratio?

16:9 means width is 16/9 times height—standard for HD video and most monitors.

Aspect Ratio Calculator — 16:9 & Custom

Simplify aspect ratios or scale dimensions while keeping ratio. Free aspect ratio calculator for video and screens.

Mode

Width

Height

Target width

Formula used

Ratio = Width : Height (simplified by GCD)
Scaled height = Target width × (H ÷ W)

Examples

Try a sample calculation

1920×1080

16:9 HD

Simplify any ratio.

Scale while preserving ratio.

Enter the required fields—dates, amounts, percentages, or measurements as labeled.
Double-check units (currency, tax rate, height/weight) match your scenario.
Run the calculation and read the breakdown, not just the headline number.
Adjust inputs to compare scenarios, or open a related Rankify calculator for the next step.

Resize images by pixel dimensions or percentage without installing software.

Solve percent increase, decrease, and part-of-whole problems.