Ratio.

Aspect-ratio calculator. Every number shows its arithmetic. All math runs in your browser.

Key to the plate

you type here selected answer

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1Size and ratio

LED wall

Panel W Panel H Across Down

15 × 8 = 120 panels

Width Height

Same ratio at

Width × Height

720 = 1280 × 9 ÷ 16

Ratio Preset

Ratio takes 16:9, 2.39, or a pasted size like 1920x1080. The locked side stays fixed when a ratio is typed or picked.

2Pixelmap

Screen unnamed

Screen name Show name and resolution

Grid grid 120 px · 16 × 9 squares, exact fit

Square size Pattern soon

Dominant colour soon

Elements

Colour bars Grid lines Square labels Corner stars Diagonals Safe areas Grey ramps Edge border

Only colour bars can be switched off for now. Toggles for the rest are coming soon.

Motion · video still

Animate patterns

Loop length Frame rate

One seamless loop: set the player to repeat. Recording runs in real time.

Screens · batch export none yet

No screens yet. Set a size and a screen name, then add it here.

Saved in this browser only.

Fig. 1 · 1920 × 1080

Reduced: 16:9
Decimal: 1.7778
Pixels: 2.07 MP

1080 = 1920 × 9 ÷ 16

Additional tools

3Rounding

Method	Size (W × H)	Note

4Fit a frame

Target W H

—

5Print

DPI

—

6ffmpeg command scale a video to this size

Input file Scaling Frame rate Codec Quality Audio

Popular Diagrams, No. 2.39. All maths runs in your browser. Projects leave it only if you sign in. Method · Privacy