Calculate scaled width and height dimensions while locking exact aspect ratios.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Input original width and height (e.g. 1920x1080).
Type desired target width or height in pixels.
Copy exact proportionally scaled dimension pair.
Height = Target Width / (Original Width / Original Height), maintaining exact proportions.
aspect-ratio: W / H allows elements to maintain proportions without explicit height calculations.
Zero-egress companion tools in the Calculators suite
Solve percentage increases, decreases, fractions, and discounts.
Calculate future investment value with recurring contributions.
Calculate monthly payments, total interest, and amortization schedule.
Calculate your monthly mortgage payments and total interest easily.
