Math Tools – Small Tools. Big Help.
Welcome to SmallToolsOnline.com — your go-to toolkit for performing quick and accurate math operations right in your browser. Our collection of smart browser-based math tools helps you calculate, convert, and solve numbers instantly — all without installing any software or sending your data anywhere.
From simple calculators and percentage finders to advanced unit converters, equation solvers, and number formatters, every tool runs directly in your browser using fast JavaScript processing.
Whether you're a student learning math, a developer doing conversions, or a professional working with numbers — Small Tools Online helps you do it faster, smarter, and safer.
All Math Tools
Perform addition, subtraction, multiplication & division.
Use cos, sin, tan, log, roots and powers.
Add, subtract, multiply & divide fractions.
Calculate percentage, increase/decrease values.
Solve direct and inverse proportions and ratios.
Check if a number is prime or composite.
Find prime factors of a given integer.
Compute greatest common divisor & least common multiple.
Solve ax² + bx + c = 0, with real/complex roots.
Calculate determinant of a square matrix (2×2 or 3×3).
Solve two or more linear equations with multiple variables.
Generate a list of primes up to a given number.
Generate Fibonacci sequence terms.
Generate random integers or floats within a range.
Convert numbers between binary, decimal, hexadecimal and octal.
Convert a percentage value into a simplified fraction.
Convert a fraction into its percentage equivalent.
Compute log base-x of a number.
Raise numbers to powers (with integers or decimals).
Compute square roots and nth-roots.
Find the absolute (positive) value of any number.
Compute the arithmetic mean of numbers.
Find the median value from a dataset.
Find the most frequently occurring value in a list.
Calculate the difference between the largest and smallest values.
Compute population or sample standard deviation.
Find how far numbers are spread out from their mean.
Compute probability of events using basic formulas.
Calculate nPr and nCr values instantly.
Compute factorial values from n! up to 170! safely.
Find the percentage change between two numbers.
Compute area using base-height or Heron’s formula.
Find area and circumference from radius or diameter.
Calculate area and perimeter of rectangles.
Find sine, cosine, tangent, and their inverses.
Compute sides of right triangles using a²+b²=c².
Calculate exponential increase or decay.
Convert numbers to and from scientific notation.
Round or count significant figures in numbers.
Find slope, intercept, and correlation coefficient.
Calculate experimental vs theoretical error in percent.
Round decimals to whole numbers or specific precision.
Add commas, separators, and precision to numbers.
Find a percentage of any number quickly.
Simplify a ratio like 150:50 into its lowest form.
Find nth term, sum, or difference in arithmetic series.
Find nth term, ratio, and sum in a geometric sequence.
Multiply two matrices instantly with JavaScript.
Perform dot, cross, and magnitude calculations in 3D space.
Perform addition, subtraction, and modulus on complex numbers.