📐 Math & Science Calculators

Math & Science Tools

Scientific calculator, percentage, fractions, statistics, geometry and more — all free, all in your browser.

100% browser-based
100% free & private
Instant results
🔢 Basic Calculators
🧮
Scientific Calculator
Full scientific calculator with trig, log, exponents and memory.
ScientificTrigLog
Open tool
%
Percentage Calculator
Calculate percentages, increases, decreases, and percentage of totals.
PercentageIncreaseDecrease
Open tool
½
Fraction Calculator
Add, subtract, multiply and divide fractions with step-by-step working.
FractionsSimplifyMixed
Open tool
🔢
LCM & GCD Calculator
Find the Least Common Multiple and Greatest Common Divisor instantly.
LCMGCDHCF
Open tool
🔍
Prime Checker
Check if a number is prime and find all prime factors instantly.
PrimeFactorsSieve
Open tool
🌀
Fibonacci Generator
Generate Fibonacci sequences up to any number of terms.
FibonacciSequenceSeries
Open tool
❗
Factorial Calculator
Calculate factorials for any number. Shows step-by-step calculation.
Factorialn!Permutation
Open tool
🎲
Random Number Generator
Generate truly random numbers in any range. Supports bulk generation.
RandomRangeBulk
Open tool
📐 Advanced Calculators
📊
Mean, Median & Mode
Calculate mean, median, mode, range and midrange for any dataset.
MeanMedianMode
Open tool
📈
Standard Deviation
Calculate population and sample standard deviation and variance.
Std DevVarianceStatistics
Open tool
❓
Quadratic Solver
Solve ax² + bx + c = 0. Shows real and complex roots with discriminant.
QuadraticRootsEquation
Open tool
🔢
Matrix Calculator
Add, subtract, multiply matrices and find determinants and inverses.
MatrixDeterminantLinear
Open tool
🔢
Permutation & Combination
Calculate nPr permutations and nCr combinations for any n and r.
PermutationCombinationnCr
Open tool
🔺
Triangle Calculator
Calculate triangle area, perimeter, angles, height and all sides.
TriangleAreaAngles
Open tool
⭕
Circle Calculator
Calculate circle area, circumference, diameter and arc length.
CircleAreaCircumference
Open tool
📐
Pythagorean Theorem
Find any side of a right-angled triangle using the Pythagorean theorem.
PythagoreanRight TriangleHypotenuse
Open tool

Free Math and Science Calculators

ToollyX provides 16 free mathematics calculators covering everything from basic arithmetic to advanced statistics and geometry. All tools run in your browser using JavaScript — no internet connection is required after the page loads, making them ideal for students and professionals in any location.

Basic Math Tools

The Percentage Calculator handles all common percentage problems — percentage of a number, percentage increase/decrease, and what percentage one number is of another. The Fraction Calculator adds, subtracts, multiplies and divides fractions and mixed numbers with full step-by-step working shown. The Scientific Calculator supports trigonometric, logarithmic and exponential functions.

Statistics and Advanced Math

Frequently Asked Questions