Elementary Calculators
207+ free calculators with step-by-step solutions. Search, filter, and solve.
Calculator tools
Full calculators for when you need more than one formula.
Simplify Fraction
a/b ÷ HCF(a, b) = simplest form
Reduce a fraction to its lowest terms
Average (Mean)
Average = (a + b + c) ÷ 3
Calculate the average of three numbers
Area of Rectangle
A = l × w
Calculate the area of a rectangle by multiplying length and width
Discount Calculator
Discount = Original Price × (Discount Percentage ÷ 100)
Calculate discount amount and final price
Tip Calculator
Tip = Bill × (Tip Percentage ÷ 100)
Calculate tip amount and total bill including tip
Age Calculator
Age = Current Year - Birth Year
Calculate age from birth year
Partner Spotlight
Length Unit Converter
Various conversion factors
Convert between different units of length (meters, feet, inches, etc.)
Basic Addition
Sum = a + b
Add two numbers together
Basic Subtraction
Difference = a - b
Subtract one number from another
Basic Multiplication
Product = a × b
Multiply two numbers
Basic Division
Quotient = a ÷ b
Divide one number by another
Area of Square
A = s²
Calculate the area of a square using side length
Perimeter of Rectangle
P = 2(l + w)
Calculate the perimeter of a rectangle
Perimeter of Square
P = 4s
Calculate the perimeter of a square
Volume of Cube
V = s³
Calculate the volume of a cube
Division with Remainder
dividend = divisor × quotient + remainder
Divide two whole numbers and find the quotient and remainder
Partner Spotlight
Perimeter of Triangle
P = a + b + c
Calculate the perimeter of a triangle
Roman Numeral Converter
Place-value substitution with I, V, X, L, C, D, M
Convert a whole number from 1 to 3999 into Roman numerals
Times Table Generator
Multiples of n from 1 to 12
Generate the multiplication table for a number from 1 to 12
Weight Unit Converter
Various conversion factors
Convert between different units of weight (kilograms, grams, pounds, ounces, metric tons)
Temperature Unit Converter
Convert via Celsius as the common base
Convert a temperature between Celsius, Fahrenheit and Kelvin
Volume Unit Converter
Various conversion factors
Convert between different units of volume (liters, milliliters, gallons, cups, cubic meters)
Rounding Calculator
Round x to n decimal places (half away from zero)
Round a number to any number of decimal places, and see it rounded to significant figures, the nearest 10, 100 and 1000
