Other Useful Calculators

Free everyday calculators for dates, ages, time, grades, GPA, and tips. Simple tools for common day-to-day calculations.

• Age CalculatorFind an exact age in years, months, and days from any date of birth, along with the total in weeks, days, hours, and minutes.
• Date CalculatorCount the days, weeks, and business days between two dates, or add and subtract any interval from a starting date.
• Time CalculatorAdd or subtract durations in hours, minutes, and seconds, or calculate hours worked between two times with unpaid breaks deducted and decimal hours for payroll.
• Tip CalculatorCalculate the tip and total for a bill, split it between any number of people, and optionally round the total up to a whole dollar.
• Discount CalculatorWork out a sale price from any discount, stack a second discount, add sales tax, and see exactly what you save and what the effective discount really is.
• GPA CalculatorCalculate your grade point average on the standard 4.0 scale by entering each course's letter grade and credit hours.
• Password GeneratorGenerate strong random passwords in your browser using the Web Crypto API. Nothing is transmitted or stored — see the entropy and estimated crack time for each result.