16:9 Aspect Ratio Calculator
Get the exact 16:9 size for video, screens and presentations. Enter a width or height and the other side is filled in.
Enter the size you have — the ratio is reduced to its simplest form.
What is the 16:9 aspect ratio?
16:9 is the standard widescreen shape: 16 units wide for every 9 units tall, a decimal ratio of 1.778. It is the default for HD and 4K television, most computer monitors and laptops, YouTube videos and presentation slides.
width = height × 16 ÷ 9
Standard 16:9 resolutions
- 1280 × 720 — HD (720p)
- 1920 × 1080 — Full HD (1080p)
- 2560 × 1440 — QHD (1440p)
- 3840 × 2160 — 4K UHD
- 7680 × 4320 — 8K UHD
Not every width gives whole pixels at 16:9. A width must be a multiple of 16 for the height to come out exact — 1000 px wide gives 562.5 px, which the calculator rounds to 563 and flags.
Frequently asked questions
What size is 16:9 in pixels?
The most common 16:9 size is 1920 × 1080 (Full HD). 1280 × 720, 2560 × 1440 and 3840 × 2160 are also 16:9.
Is 16:9 the same as 1.78:1?
Yes. 16 ÷ 9 = 1.777…, usually rounded to 1.78:1.
What is the 16:9 height for a width of 1200 px?
1200 × 9 ÷ 16 = 675 px.