Screen Aspect Ratio & Resolution Calculator
Proportional Scaling • 16:9, 21:9, 4:3 Standard Display Geometry
📐 Aspect Ratio Calculator
Calculated Ratio:
16 : 9
📁 Drag & drop an image here to auto-detect dimensions (or click to upload)
🛡️ 100% Client-Side Privacy Protection
All financial calculations and numerical conversions execute strictly within your local browser JavaScript engine. No figures or queries are ever transmitted over the network.
⚡ Instant Zero-Latency Execution
Direct IEEE-754 floating point arithmetic with zero server roundtrip latency for immediate reactive feedback.
Mathematical Specifications & Technical FAQ
How is the simplified ratio determined?
Using the Euclidean Greatest Common Divisor (GCD) algorithm to find the lowest integer ratio.
Does changing W2 automatically update H2?
Yes, modifying width or height automatically computes the reciprocal dimension while maintaining geometry.
What are common video and monitor aspect ratios?
16:9 (1920x1080 Full HD, 3840x2160 4K UHD), 21:9 (Ultrawide), and 4:3 (Legacy).