4:3 Aspect Ratio Calculator
Calculate perfect 4:3 aspect ratio dimensions for classic TV format, legacy displays, and retro content
Calculate 4:3 Dimensions
px
px
Calculated from width using 4:3 ratio
Choose the unit for your measurements
Common 4:3 Resolutions
Click any resolution to use as preset values
4:3 Quick Reference
1
Ratio Formula
Width ÷ Height = 1.333
2
From Width
Height = Width ÷ 1.333
3
From Height
Width = Height × 1.333
Aspect Ratio Comparison
4:31.333 (This calculator)
16:91.778 (HD/Modern)
16:101.600 (Widescreen)
1:11.000 (Square)
Understanding 4:3 Aspect Ratio
What is 4:3 Aspect Ratio?
The 4:3 aspect ratio represents a rectangular format that is 4 units wide for every 3 units of height. This creates a width-to-height ratio of approximately 1.333:1, making it the classic standard for traditional television, computer monitors, and early digital cameras.
Historical Applications
- •Traditional television broadcasts (pre-HD era)
- •Classic computer monitors (CRT and early LCD)
- •Early digital cameras and camcorders
- •Film projection in cinema (before widescreen)
Calculation Methods
From Width: Height = Width ÷ 1.333
From Height: Width = Height × 1.333
Check Ratio: Width ÷ Height = 1.333
Modern Usage
- Legacy Content: Preserving and displaying old TV shows and films
- Retro Gaming: Classic video games and emulation systems
- Industrial Displays: Specialized equipment and kiosks
- Photography: Print formats and artistic compositions
4:3 vs Modern Ratios
4:3 (1.33)
Classic TV format, more square
16:10 (1.6)
Computer monitors
16:9 (1.78)
Modern HD standard