Screen Size to Diagonal Converter

Use this free online tool to calculate screen dimensions and diagonal size in inches and centimeters. Ideal for comparing devices, designing displays, or understanding aspect ratios.

Select Device Preset: — Choose a device — iPhone 13 — 6.1″ iPad Air — 10.9″ 13.3″ Laptop — 1920×1080 15.6″ Laptop Samsung Galaxy S22 Ultra — 6.8″ iPad Pro 12.9″ 24″ Monitor 55″ TV Select Unit: Inches Centimeters