Math Calculators
Math calculators are the core of Smart Utilities Hub — from basic arithmetic to advanced scientific functions. Our collection includes a full-featured scientific calculator, percentage and fraction tools, square root and logarithm calculators, an exponent engine, slope and Pythagorean theorem solvers, and an interactive graphing calculator. Each tool is powered by robust math libraries (math.js, nerdamer, decimal.js) to ensure precision even with large inputs or complex expressions. Whether you’re a student checking homework, an engineer running quick computations, or a teacher demonstrating concepts, these calculators deliver accurate results instantly and are completely free to use.
Basic Calculator
A free online calculator for everyday math — add, subtract, multiply, and divide instantly. Fast, accurate, and works on any device, no sign-up.
Scientific Calculator
Try our free scientific calculator for trigonometry (radians or degrees), logarithms, exponents, and more advanced math — instant, precise results, no sign-up.
Percentage Calculator
Calculate percentages instantly and for free — find what % one number is of another, percentage increase or decrease, all with no sign-up needed at all.
Fraction Calculator
Add, subtract, multiply, and divide fractions for free — convert between fractions, decimals, and mixed numbers, with results simplified automatically.
Square Root Calculator
Calculate the square root, cube root, or any nth root of a number for free with high decimal precision — instant, accurate results, no sign-up needed.
Logarithm Calculator
Free logarithm calculator for natural log, common log, or any custom base — enter a value and get an instant, high-precision result with no sign-up required.
Exponent Calculator
Raise any number to any power for free — compute roots via fractional exponents, with results shown in scientific notation automatically when needed.
Slope Calculator
Calculate the slope between two points for free — enter two coordinates to find rise over run instantly, with no sign-up needed.
Pythagorean Theorem
Solve right triangles for free using the Pythagorean theorem — find the hypotenuse or a missing leg instantly, accurate to any level of precision, no sign-up.
Graphing Calculator
Plot multiple functions overlaid for free with our interactive graphing calculator — each in its own color with a legend, instant results in your browser.