Everyday math calculators
The school math that keeps turning up in real life.
An online calculator, fractions, averages, ratios, roots, grades, geometry and random numbers.
Calculators
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Online Calculator
Type a sum and get the answer: + − × ÷, brackets, powers, roots and percent. -
Scientific Calculator
Trigonometry, logarithms, powers, roots and factorials, typed like you’d write them. -
Fraction Calculator
Add, subtract, multiply and divide fractions, simplified. -
Average Calculator: Mean, Median, Mode
Mean, median, mode and range for any list of numbers. e.g. Mean (average) = 18 -
Rule of Three Calculator
If A gives B, what does C give? Direct and inverse proportion. e.g. gives (X) = 450 -
Ratio Calculator
Simplify a ratio, and split an amount in that ratio. e.g. Simplified ratio = 2 : 3 -
Rounding Calculator
Round any number to decimal places, or to the nearest 5, 10 or 100. e.g. Rounded = 3.14 -
Square Root Calculator
The square root, cube root or any root of a number, with the simplified radical. e.g. √72 = 8.4852813742 -
Exponent Calculator
Any number to any power, whole, negative or fractional, with the working shown.
School and statistics
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Grade Calculator: Points to Percent and Letter
Your test or assignment score as a percentage and a letter grade. e.g. Score = 86% -
GPA Calculator
Your grade point average on the 4.0 scale, weighted by credit hours. e.g. GPA = 3.36 -
Final Grade Calculator
What you need on the final exam to get the grade you want. e.g. You need on the final = 104% -
Weighted Average Calculator
Average values that count for different amounts: grades, prices, scores. e.g. Weighted average = 83.6 -
Standard Deviation Calculator
Standard deviation, variance and mean for a list of numbers, sample or population. e.g. Standard deviation = 2.1381 -
Pythagorean Theorem Calculator
The missing side of a right triangle, with its angles, area and perimeter. e.g. Hypotenuse c = 5 -
Quadratic Equation Solver
Solve ax² + bx + c = 0: the roots, the discriminant, the vertex and the factored form. -
Slope Calculator
The slope between two points, the line’s equation, its angle and the distance. e.g. Slope (m) = 2 -
Circle Calculator: Area and Circumference
Area, circumference, radius and diameter of a circle from any one of them. e.g. Area = 78.539816 -
Volume Calculator: Cube, Cylinder, Sphere, Cone
The volume of a box, cube, cylinder, sphere, cone or pyramid, in litres too. e.g. Volume = 785.3982 cm³ -
Long Division Calculator with Steps
Divide two whole numbers with a remainder, step by step as in school. -
LCM and GCF Calculator
The greatest common factor and least common multiple of two or more numbers. e.g. Greatest common factor (GCF) = 6 -
Triangle Calculator
Every side, angle and the area of a triangle from the three values you know. e.g. Area = 6
Numbers and chance
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Probability and Odds Calculator
The chance of something happening at least once, a dice total, or a lottery win. e.g. At least once = 65.13% -
Random Number Generator and Dice Roller
Pick random numbers in any range, or roll any number of dice. -
Coin Flip
Flip a fair coin, or a hundred, and see heads, tails and the longest streak. -
Prime Factorization Calculator
Whether a number is prime, its prime factors, and all its divisors. e.g. Prime factors = 2³ × 3² × 5 -
Scientific Notation Converter
Write any number in scientific, E and engineering notation, or turn them back. e.g. Scientific notation = 4.52 × 10⁻⁴ -
Binary, Hex and Decimal Converter
Convert whole numbers between decimal, binary, hexadecimal and octal. e.g. In binary = 1111 1111 -
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers. e.g. In Roman numerals = MMXXVI -
Number to Words Converter
Write any number in words, including the amount line for a cheque.
