Calculators
Free online calculators — age calculator, grade calculator, scientific calculator, and more
Tools in this category
Online calculators take the hassle out of math — whether you are figuring out your exact age, calculating grades, finding averages, or working with dates. All calculators provide instant, accurate results with step-by-step explanations. Perfect for students, teachers, professionals, and anyone who needs quick math answers.
Age Calculator
Figuring out someone's exact age isn't as simple as subtracting birth year from current year. Leap years, different m...
Age Difference Calculator
Ever wonder exactly how many years, months, and days separate two birthdays? Our Age Difference Calculator makes it e...
Average Calculator
Need to find the average of a bunch of numbers fast? Whether you're a student calculating your GPA, a teacher figurin...
Scientific Calculator
Sometimes a basic four-function calculator just won't cut it. When you need to solve complex equations, work with tri...
Grade Calculator
Wondering what you need on the final exam to get an A? Trying to figure out your current grade halfway through the se...
Date Calculator
Planning an event 90 days from now? Need to figure out exactly how many weeks until your due date? Trying to calculat...
Percentage Change Calculator
Stock went from $50 to $75 — is that good? Your website traffic dropped from 10,000 to 8,000 visitors — how worried s...
Lunar Age Calculator
The Lunar Age Calculator determines your age according to the traditional Chinese lunar calendar system. Unlike the W...