256 × 144
144p · Very low
Tiny preview or reference. Exact 16:9, but generally too small for publishing.
16:9 Aspect Ratio Calculator
Enter a width or height to calculate the matching 16:9 dimension instantly. The last field you edit controls the result.
Calculate 16:9 width or height
Positive numbers up to 1,000,000,000 pixels are accepted.
16:9 result
1,920 × 1,080
1,080px exact; no rounding needed.
Common presets
Height = width × 9 ÷ 16. The exact value is shown before rounding.
Live widescreen preview
1,920 × 1,080
- Ratio
- 16:9
- Decimal
- 1.7778:1
Need the vertical version? Open the 9:16 calculator →
Verified reference
Common 16:9 Resolutions and Dimensions
A resolution is an exact 16:9 size when its width multiplied by 9 and divided by 16 equals its height. Use a row to load that size into the calculator. The separate nominal list explains practical integer rasters that are commonly called 16:9 even though their pixel ratio differs slightly.
320 × 180
180p · Very low
Lightweight preview. Exact 16:9.
640 × 360
360p · SD
Low-bandwidth video. Exact 16:9.
960 × 540
qHD · SD+
Preview or proxy video. Exact 16:9 and one quarter of the pixel count of 1080p.
1,024 × 576
WSVGA-style · SD+
Embedded video and layouts. Exact 16:9.
1,280 × 720
HD / 720p · HD
Video, streaming and presentations. Exact 16:9 and listed in YouTube guidance.
1,600 × 900
HD+ · HD+
Desktop and display capture. Exact 16:9.
1,920 × 1,080
Full HD / 1080p · Full HD
Video, monitors and presentations. Exact 16:9 and the default calculator size.
2,560 × 1,440
QHD / 1440p · QHD
Monitors and high-quality video. Exact 16:9.
3,200 × 1,800
QHD+ · QHD+
High-density display capture. Exact 16:9.
3,840 × 2,160
4K UHD / 2160p · UHD
4K video and displays. Exact 16:9; 4096 × 2160 DCI 4K is a different ratio.
5,120 × 2,880
5K · 5K
High-density displays. Exact 16:9.
7,680 × 4,320
8K UHD / 4320p · 8K
8K mastering and displays. Exact 16:9.
Common nominal 16:9 sizes
These dimensions are useful and widely recognized. They are labelled nominal—not incorrect—because whole-pixel rounding prevents them from reducing to an exact 16:9 ratio.
426 × 240
Nominal 16:9 · 1.775:1
Exact counterpart: 426.666… × 240 or 426 × 239.625.
A practical integer 240p raster listed in YouTube guidance.
854 × 480
Nominal 16:9 · 1.7792:1
Exact counterpart: 853.333… × 480 or 854 × 480.375.
A common 480p delivery raster created by integer rounding.
1366 × 768
Nominal 16:9 · 1.7786:1
Exact counterpart: 1365.333… × 768 or 1366 × 768.375.
A common display raster that is treated as nominal 16:9.
Transparent calculation
How to Calculate a 16:9 Aspect Ratio
When width is known, multiply it by 9 and divide by 16. When height is known, multiply it by 16 and divide by 9. The calculator performs the same operations and waits until the final step to apply pixel rounding.
Find height
Height = Width × 9 ÷ 16At 1,000px wide, the exact height is 562.5px. Nearest and ceiling produce 563px; floor produces 562px.
Find width
Width = Height × 16 ÷ 9At 1,080px high, the matching width is exactly 1,920px, so no rounding is required.
The decimal form is 16 ÷ 9 = 1.777777…:1, usually written as 1.7778:1 or 1.78:1. The ratio works with any consistent unit, but converting pixels to a physical print size requires a separate PPI or DPI value.
Direct answer
What Does 16:9 Mean?
A 16:9 aspect ratio is a widescreen rectangle measuring 16 units wide for every 9 units high. It describes proportional shape, not a single resolution. That is why 1280 × 720, 1920 × 1080, 2560 × 1440, and 3840 × 2160 can all be exact 16:9 sizes with different pixel detail.
- Aspect ratio
- The proportional shape: 16 units by 9 units.
- Resolution
- The pixel dimensions, such as 1920 × 1080.
- Orientation
- 16:9 is landscape; the rotated version is 9:16 portrait.
The proportion is unit-independent: a 16 by 9 inch panel has the same shape as a 160 by 90 millimeter panel. This page uses pixels because raster images and video need pixel dimensions. A larger exact resolution adds detail and file size without changing the frame shape; physical output still requires a separate PPI or DPI decision.
Where to Use 16:9
Video and YouTube
Use 1280 × 720 for an HD export, 1920 × 1080 for Full HD, or 3840 × 2160 for 4K UHD. YouTube lists these as recommended 16:9 resolutions and adapts its player when a video uses another ratio.
Presentations
PowerPoint documents 10 × 5.625 inches for On-screen Show (16:9) and 13.333 × 7.5 inches for Widescreen. The second width is a displayed approximation of 13⅓ inches.
Displays and gaming
Match the output to the display or capture target. 1920 × 1080, 2560 × 1440, and 3840 × 2160 are exact 16:9 sizes, but the best choice also depends on performance and source quality.
Web layouts and CSS
Use CSS aspect-ratio: 16 / 9 when a responsive box should preserve its shape while one dimension remains automatic. Pixel dimensions determine detail; the ratio determines shape.
16:9 Compared with Other Ratios
Choose the ratio that matches the final placement rather than stretching a finished asset. Cropping fills a different frame by removing content; fitting preserves the complete frame and may add empty space.
16:9 vs 4:3
4:3 is squarer and gives more vertical space at the same width.
16:9 vs 16:10
16:10 is slightly taller and is useful when vertical workspace matters.
16:9 vs 21:9
21:9 is wider for ultrawide displays and cinematic layouts.
16:9 vs 9:16
They use the same proportions in landscape and portrait orientations.
Frequently Asked Questions
What resolution is 16:9?
16:9 is a ratio rather than one resolution. Exact examples include 1280 × 720, 1920 × 1080, 2560 × 1440, and 3840 × 2160.
Is 1920 × 1080 a 16:9 ratio?
Yes. Dividing both dimensions by 120 simplifies 1920:1080 to exactly 16:9.
Is 2560 × 1440 a 16:9 ratio?
Yes. Dividing both values by 160 produces exactly 16:9.
Is 1366 × 768 exactly 16:9?
No. Its ratio is about 1.7786:1, so it is a common nominal 16:9 display resolution created by integer rounding.
What is 16:9 as a decimal?
Sixteen divided by nine is 1.777777…, commonly rounded to 1.7778:1 or 1.78:1.
Can I calculate 16:9 in inches, cm, or mm?
Yes, because the ratio is unit-independent. Converting between physical dimensions and pixels also requires a PPI or DPI value.
Method and review record
How this calculator was checked
The calculator keeps an internal 16:9 ratio. It multiplies a known width by 9 ÷ 16 or a known height by 16 ÷ 9, preserves the exact result, and applies the selected rounding rule only to the displayed pixel output.
Reviewed August 6, 2026 by the ScreenMetricLab editorial team. Found an issue? Contact us.
Related resources
Continue with related tools and ratios
Use these next when you need a portrait version, a different frame shape, or a display-density check after choosing the 16:9 pixel size.