Free Online Calculators
Fast, simple and useful calculators for everyday calculations.
Popular Calculators
Age Calculator
Calculate your exact age in years, months and days from your date of birth.
Attendance Calculator
Calculate your attendance percentage and find how many classes you need to attend.
Love Calculator
Check your love compatibility with your partner using names.
FLAMES Calculator
Play the classic FLAMES game to find your relationship status.
Date Calculator
Calculate the difference between two dates or add/subtract days from a date.
Numerology Calculator
Discover your life path number and name number based on numerology.
Age Difference Calculator
Calculate the exact age difference between two people.
Stock Average Calculator
Calculate the average price of your stock purchases.
Average Calculator
Calculate the average, median, sum, minimum and maximum of a set of numbers.
BMR Calculator
Calculate your Basal Metabolic Rate to understand your daily calorie needs.
Period Calculator
Predict your next period date and track your menstrual cycle.
Ovulation Calculator
Estimate your ovulation date and fertile window based on your cycle.
Pregnancy Calculator
Calculate your estimated due date and current pregnancy week.
Pregnancy Week Calculator
Find out your current pregnancy week, month and trimester.
EDD Calculator
Calculate your Estimated Due Date using Naegele's Rule.
About CalculatorGo
CalculatorGo provides free, fast and accurate online calculators for everyday use. Whether you need to calculate your age, check your attendance percentage, track your pregnancy or find the average of numbers — our calculators are designed to give you instant, reliable results.
Every calculator is built with accuracy in mind, using well-documented formulas and methods. All calculations run directly in your browser — we don't store your personal data.