ganak.appMath Calculators
24 calculators · Updated Mar 2026
Solve everyday math problems with calculators for percentages, interest, averages, fractions, and ratios. Each tool shows step-by-step workings so you can understand the result.
Percentage, percentage change, and reverse percentage tools · Simple and compound interest with detailed breakdowns · Weighted average and ratio calculators for data analysis
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Percentage Calculator
All-in-one percentage calculator with 4 calculation modes: find percentage of a number, calculate what percent one value is of another, percentage increase/decrease, and reverse percentage. Essential for discounts, tips, grades, taxes, profit margins, and financial calculations. Includes step-by-step formulas and explanations.
Compound Interest Calculator
Calculate compound interest with multiple compounding frequencies (annually, semi-annually, quarterly, monthly, daily, continuously). See how your money grows exponentially over time with the power of compounding.
Average Calculator
Calculate the average (arithmetic mean), weighted average, median, mode, range, sum, and standard deviation of any set of numbers. Supports both simple and weighted averages with step-by-step formula breakdowns. Essential for grades, statistics, data analysis, and everyday math.
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Percentage Change Calculator
Calculate percentage increase or decrease between two values (old value to new value). Find growth rates, price changes, stock returns, weight loss progress, and year-over-year comparisons. Shows formula: ((New - Old) / Old) × 100. Perfect for business metrics, investment returns, and performance tracking.
Percentage Difference Calculator
Calculate the percentage difference between any two numbers using the average method. Compare values like prices, salaries, populations, or measurements. Different from percentage change - this shows the relative difference between two values regardless of which is larger. Formula: |A - B| / ((A + B) / 2) × 100.
Reverse Percentage Calculator
Find the original price or value before a percentage was added or removed. Calculate pre-discount prices, pre-tax amounts, original costs before markup, and base values before percentage changes. Essential for sales tax calculations, discount reverse engineering, and invoice verification. Shows the working formula.
Simple Interest Calculator
Calculate simple interest, total amount, and daily interest for loans or savings. Enter principal, annual rate, and time in years/months/days to see interest and payoff totals instantly.
Standard Deviation Calculator
Calculate population and sample standard deviation, variance, mean, median, quartiles, and Z-scores for any dataset. Enter numbers separated by commas or spaces. Includes step-by-step formulas, distribution histogram, and coefficient of variation. Free online statistics calculator.
Algebra Calculator
Free algebra calculator with step-by-step solutions. Solve linear equations, quadratic equations (with graph), systems of two equations, and evaluate polynomials. See discriminant, roots, vertex, factored form, and verification. No sign-up required.
Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers with step-by-step solutions. Simplify fractions to lowest terms, convert between decimals and fractions, and see results as fractions, mixed numbers, decimals, and percentages. Includes visual fraction representations and detailed formula breakdowns.
Weighted Average Calculator
Calculate the weighted average of a set of numbers with different weights. Supports general value-weight pairs, grade calculations with credit hours, and percentage-weighted data. See each item's contribution, compare weighted vs simple average, and get step-by-step formula breakdowns. Essential for GPA, grades, portfolio returns, and cost analysis.
Ratio Calculator
Simplify ratios to lowest terms, solve proportions for a missing value, scale ratios up or down, and compare two ratios for equivalence. Supports 2-term and 3-term ratio simplification with step-by-step solutions, visual ratio bars, and results as ratios, decimals, and percentages. Free online ratio calculator for math, cooking, maps, and finance.
Triangle Calculator
Free triangle calculator to solve any triangle. Enter 3 known values (sides or angles) to find all missing sides, angles, area, perimeter, height, medians, and more. Supports SSS, SAS, ASA, AAS, and SSA with step-by-step solutions.
Square Root Calculator
Calculate square roots, cube roots, and nth roots of any number. Simplify radicals to exact form (e.g., √72 = 6√2), view prime factorization, step-by-step solutions, and identify perfect squares. Supports imaginary numbers and a complete reference table.
Interest Rate Calculator
Calculate interest rate, monthly payment, loan amount, or loan term for any fixed-rate loan. Find the interest rate you are being charged, see total interest paid, view a year-by-year amortization schedule, and compare how different rates affect your payments. Works for mortgages, car loans, personal loans, and student loans.
Rounding Calculator
Round numbers to any decimal place, whole number position, or significant figures. Supports 9 rounding modes including half up, half down, banker’s rounding, ceiling, and floor. See step-by-step explanations and compare results across all rounding methods instantly.
Long Division Calculator
Free long division calculator showing complete step-by-step work. Enter any dividend and divisor to see quotient, remainder, decimal form with repeating detection, and a detailed visual solution process.
LCM Calculator
Find the Least Common Multiple (LCM) of two or more numbers with step-by-step solutions using prime factorization and listing multiples methods. Also shows GCD, prime factors, and the LCM-GCD relationship. Free online LCM calculator for math, fractions, and scheduling problems.
Slope Calculator
Calculate slope from two points, find angle of incline, percentage grade, and line equations in slope-intercept, point-slope, and standard form. Convert between slope, degrees, and percent grade. Interactive graph with step-by-step solutions, distance, midpoint, and parallel/perpendicular slopes.
Quadratic Formula Calculator
Solve any quadratic equation using the quadratic formula. Enter coefficients a, b, c to find roots, discriminant, vertex, axis of symmetry, and parabola graph. Shows step-by-step solutions, Vieta's formulas, standard/vertex/factored forms. Handles real and complex roots with exact and decimal answers.
Circumference Calculator
Calculate the circumference of a circle from radius, diameter, area, or reverse-calculate any circle property. See step-by-step solutions, results in terms of π, and all circle measurements instantly. Includes formulas for circumference to diameter, area to circumference, and common circle sizes reference table.
Log Calculator
Free log calculator for any base. Compute logarithms, anti-logs, find the base, and change of base with step-by-step solutions and verification. Includes common log values table, logarithm rules, and real-world applications. Supports log₂, ln, log₁₀, and custom bases.
Probability Calculator
Free probability calculator with 4 modes: single event, two events (joint, union, conditional, XOR), repeated trials, and Bayes' theorem. See step-by-step solutions with interactive Venn diagrams. Calculate P(A∩B), P(A∪B), P(A|B), complement, and series probability instantly.
Exponent Calculator
Calculate any exponent with free step-by-step solutions. Supports positive, negative, zero, and fractional exponents. See results in decimal, fraction, and scientific notation. Includes exponent rules, powers reference table, and common mistakes section.
Why Use Math Calculators?
Math shows up everywhere — calculating discounts, splitting bills, checking interest rates, or working through school assignments. These calculators don't just give you the answer; they show step-by-step workings so you can understand the process. Whether you are a student, professional, or just need a quick calculation, these tools save time and build confidence.