100% Client-Side • 0 B Data Leaves Browser
Daily Calculators
Percentages, responsive aspect ratios, timezone comparisons, and unit conversions. All utilities execute 100% locally inside your browser via WebAssembly and Canvas.
POPULAR
Percentage & Discount Calculator
Calculate percentage of a number, percentage changes (increase/decrease), and final sale discounts.
⚡ 100% Client-SideOpen Tool
Aspect Ratio & Dimension Calculator
Calculate 16:9, 4:3, 1:1, 21:9 responsive dimensions and scale resolutions with live preview.
⚡ 100% Client-SideOpen Tool
Timezone Converter & World Clock
Compare global times and schedule meetings across major world cities with an interactive hour slider.
⚡ 100% Client-SideOpen Tool
Universal Unit Converter
Convert units across Length, Weight, Temperature, Data Storage, Speed, and Area.
⚡ 100% Client-SideOpen Tool