Other Calculators — Age, Date, GPA, Concrete & More

Calculate your exact age in years, months, weeks, days, and hours — and find your next birthday.

Find the number of days between two dates, or add/subtract days from any date.

Add, subtract, or convert time — hours, minutes, seconds, days, and weeks.

Calculate total hours worked across multiple shifts and estimate your gross pay.

Calculate your semester GPA and cumulative GPA based on your courses, grades, and credit hours.

Calculate your weighted average grade or find out what score you need on a final exam.

Calculate cubic yards of concrete needed for slabs, columns, stairs, and curb and gutter projects.

Calculate network address, broadcast address, usable hosts, and subnet mask for any IP range.

Generate strong, secure, random passwords with custom length, characters, and complexity.

Convert between units of length, weight, temperature, area, volume, speed, data, and energy.