Age Calculator
Calculate age from date of birth
Aspect Ratio Calculator
Calculate aspect ratios and scale image or video dimensions while maintaining the original ratio. Includes common presets like 16:9, 4:3, and 1:1.
BMI Calculator
Calculate your Body Mass Index
Basic Calculator
Simple math calculator
Discount Calculator
Calculate sale prices and savings
Hourly Rate Calculator
Calculate what hourly rate to charge based on your income goal, working hours, billable percentage, and tax rate. Live-updating results with daily, weekly, monthly, and annual breakdowns.
Number Formatter
See any number in 13 formats instantly — standard, accounting, European, Indian, scientific, percentage, abbreviated, binary, hex, octal, Roman, ordinal, and words.
Percentage Calculator
Calculate percentages easily
Scientific Calculator
Advanced scientific calculator with 540+ functions: trigonometry, logarithms, matrices, complex numbers, equation solver, statistics, base-N conversion, and 47 scientific constants. Inspired by Casio fx-991CW.
Timesheet Calculator
Track work hours, breaks, and earnings with an instant timesheet. Add entries, set your hourly rate, view a live summary, and export to CSV.
Tip Calculator
Calculate tips and split bills