🔢 14 Free Tools

Math Calculators

Free online math calculators for percentages, fractions, ratios, averages, areas, standard deviation, exponents, and more. Instant results, step-by-step where available.

%Percentage CalculatorCalculate percentages, percentage change, and what percent one number is of another. Find sales discounts, marks, margins, and tips instantly with standard math formulas.→
%PSI to GPM CalculatorConvert water pressure in PSI to flow rate in GPM based on pipe diameter and orifice size. Simplify hydraulics, municipal watering, and plumbing calculations.→
📉Percentage Decrease CalculatorCalculate the percentage drop, absolute decrease, and decrease ratio between two values. Solve price drops, business metrics, and math problems with step-by-step working.→
➗Fraction CalculatorAdd, subtract, multiply, and divide fractions or mixed numbers with step-by-step solutions. Simplify fractional results to their lowest terms instantly and convert fractions to decimals.→
⚖️Ratio CalculatorSimplify ratios to their lowest terms, solve proportions, and calculate missing scale factors for recipes, scale models, blueprints, or math homework.→
📊Average CalculatorCalculate the mean, median, mode, range, and sum of any set of numbers. Simplify statistics homework, data analysis, and mathematical averages with detailed results and step-by-step calculations instantly.→
📝Long Division CalculatorSolve long division problems step by step with full working, quotients, and remainders. Excellent learning resource for students and teachers for classroom math.→
📐Triangle CalculatorSolve all sides, angles, area, and perimeter of any triangle. Supports SSS, SAS, ASA, and right triangle configurations with trigonometric laws.→
🔲Area CalculatorCalculate the area of common geometric shapes including circles, squares, rectangles, triangles, trapezoids, and ellipses. Get step-by-step formulas, perimeter values, and solutions for school math and construction projects.→
🏛️Roman Numeral ConverterConvert standard numbers to Roman numerals and Roman numerals to standard numbers. Supports values up to 3,999 with additive and subtractive rules explained.→
📈Standard Deviation CalculatorCalculate population and sample standard deviation, variance, mean, and sum of a dataset. Analyze data spread, standard error, and variance easily.→
🔢Exponent CalculatorCalculate any base raised to any power, including negative, fractional, and decimal exponents. Solve exponential equations, powers of ten, and math problems instantly with step-by-step explanations.→
🧬Punnett Square CalculatorGenerate Punnett squares for monohybrid and dihybrid genetic crosses. Calculate genotype and phenotype probabilities, genetic ratios, and allele distributions.→
⚗️Chemistry AP Score CalculatorPredict your AP Chemistry exam score based on your multiple-choice and free-response section performance. Get score estimates, percentage breakdowns, and preparation insights to track your progress and score goals.→
📈Grade Curve CalculatorApply a grade curve to exam scores using multiple methods. Calculate flat scale, percentage, root, or bell curve distributions for classroom test grading and student curve analysis.→
⚖️ Lbm to Lbf Calculator Convert between pound-mass (lbm) and pound-force (lbf) using local gravitational acceleration values. Simplify engineering mechanics, physics conversions, and weight-to-force calculations. →

About the Math Calculators - Free Online Tools

Our free online Math Calculators - Free Online Tools is the perfect tool for students, teachers, engineers, and math enthusiasts. Solving complex algebraic equations, geometric dimensions, conversions, or statistical datasets by hand is time-consuming and prone to errors. This calculator provides instant, precise step-by-step numbers to save you time.

Step-by-Step Accuracy

Designed to support learning and productivity, our tool applies standard mathematical rules and formulas. Simply input your parameters to see how the mathematical solution is derived and get immediate answers with 100% computational accuracy.

Why Use this Calculator?

Fast Calculations: Eliminates manual division, multiplication, and complex geometric formulas.
Perfect for Homework: Ideal for students checking their math work and learning step-by-step formulas.
Always Accessible: Free to use on any device, anywhere, with no subscription required.