Math & Calculators
Percentage, age, BMI and other calculators
Percentage Calculator
Calculate percentages: X% of Y, percentage increase/decrease, and more.
Open tool →Age Calculator
Calculate exact age in years, months and days from a birthdate.
Open tool →BMI Calculator
Calculate your Body Mass Index and find your weight category.
Open tool →Tip Calculator
Calculate tip amount and split the bill between friends.
Open tool →Discount Calculator
Calculate discount amount, final price and savings instantly.
Open tool →Loan / Mortgage Calculator
Calculate monthly payments, total interest and amortization for any loan.
Open tool →Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
Open tool →Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals to numbers.
Open tool →Random Number Generator
Generate random numbers within a range with options for uniqueness and sorting.
Open tool →Statistics Calculator
Calculate mean, median, mode, standard deviation, variance and more.
Open tool →GCD / LCM Calculator
Find the greatest common divisor and least common multiple of two numbers.
Open tool →Fraction Calculator
Add, subtract, multiply and divide fractions with simplified results.
Open tool →Prime Number Checker
Check if a number is prime and find all primes up to any limit.
Open tool →Fibonacci Sequence Generator
Generate Fibonacci numbers up to any length.
Open tool →Compound Interest Calculator
Calculate compound interest with optional monthly contributions.
Open tool →Salary / Hourly Rate Calculator
Convert between annual salary, monthly, weekly, daily and hourly pay rates.
Open tool →Byte / Bit Converter
Convert between bits, bytes, KB, MB, GB, TB and PB.
Open tool →Unit Converter
Convert length, weight, temperature, speed, volume and area units.
Open tool →Area & Volume Calculator
Calculate area of 2D shapes and volume of 3D solids.
Open tool →Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms and more.
Open tool →