Use practical everyday tools for dates, grades, tips, time, and quick reference tasks.
15 free calculators · No sign-up required
Calculate exact age in years, months, and days from any birth date.
Calculate the exact number of days, weeks, and months between any two dates.
Calculate total work hours from start time, end time, break duration, and days worked.
Calculate exact age in years, months, and days from any birth date.
Calculate the exact number of days, weeks, and months between any two dates.
Calculate total work hours from start time, end time, break duration, and days worked.
Calculate days, hours, and minutes remaining until any target date or event.
Calculate GPA from course grades and credit hours using the standard weighted average.
Calculate percentage grade from earned marks and possible marks.
Calculate tip amount and per-person total for any restaurant bill.
Split any shared bill with or without tip across any number of people.
Calculate concrete volume in cubic yards or meters from slab dimensions.
Calculate tiles and boxes needed to cover any floor or wall area.
Calculate area of any shape from entered dimensions.
Convert any binary number to decimal instantly.
Convert any hexadecimal number to decimal instantly.
Convert any character to its ASCII code or any code to its character.
Convert any integer to Roman numerals or any Roman numeral to an integer.
Browse all tools on the CalcAdvisor homepage.
