Nexmetra: 4 free browser tools with a clean, effortless UI and zero learning curve. Ruler — auto-calibration, history, point markers. Protractor — 180°/360° modes, 3-decimal precision, deg/rad toggle, canvas + history export, image overlay mode, 3-point ray mode. Aspect Ratio Calculator — find missing height/width instantly, check files against a ratio + social media preview. Aspect Ratio Finder — get ratio from any file, test others against it. No ads, no clutter, no sign-up.
Nexmetra — Free Online Measurement ToolsThe most accurate free ruler, protractor & ratio toolsAug 2026