Free Online Calculators
Step-by-step math tools that show every working step — not just the final answer.
StepSolvers is a free collection of math and science calculators that show every step of the working — not just the answer. Whether you need to calculate the mean of a dataset, solve a quadratic equation, simplify a fraction, or find the hypotenuse of a right triangle, every result comes with a complete step-by-step explanation. No signup. No paywall. No limits.
All Calculators
Pick a tool and get step-by-step solutions instantly.
Average Calculator
Calculate mean, median, and mode with full step-by-step breakdown.
Pythagorean Theorem
Find the hypotenuse or any missing side of a right triangle — with step-by-step working and SVG diagram.
Scientific Notation
Convert numbers to and from scientific notation with step-by-step explanation.
Fraction Calculator
Add, subtract, multiply, and divide fractions with full simplification steps.
Percent Increase / Decrease
Find percentage change, new values, or original values with clear steps.
Standard Deviation
Compute population or sample standard deviation with every step shown.
Quadratic Formula
Solve ax²+bx+c=0 and find roots — real or complex — step by step.
Square Root Calculator
Simplify radicals, factor perfect squares, and get decimal approximations.
Log / Exponent Calculator
Compute log, ln, and exponential functions with change-of-base steps.
Slope / Linear Equation
Find slope, y-intercept, and the full equation from two points.
P-Value / Probability
Calculate p-values from z-scores or t-scores — one-tailed and two-tailed — with a normal distribution diagram.
Volume / Geometry Calculator
Calculate the volume and surface area of 8+ shapes — sphere, cylinder, cone, cube — with formula and steps.
Why Use StepSolvers?
Most calculators show you the answer. StepSolvers shows you how to get there — every formula, every step, every intermediate calculation, laid out clearly so you can follow and learn.
- Always free — no subscription, no trial, no hidden paywall
- Step-by-step working shown for every single calculation
- Works on mobile — fast, clean, and easy to use on any screen
- No signup required — open a tool and start calculating instantly
- Covers the most common math and science calculations students need
- Each tool includes worked examples, formulas, and an FAQ section