โ Math & Statistics Calculators
Solve fractions, mixed numbers, prime factors, GCF/LCM, ratios, line slopes, the Pythagorean theorem, random number generation, weighted grade averages, probability, quadratic equations, mean/median/mode, standard deviation, exponents, scientific expressions, and nCr/nPr counting with step-by-step proofs.
Standard Online Basic Calculator
Classic handheld online calculator with LCD display, memory keys (MC, MR, M+, M-), and history tape.
Open Calculator โScientific Calculator with Step Breakdown
Evaluate expressions with trigonometry, logarithms, roots, powers, constants, parentheses, and factorial using a full scientific keyboard in degree or radian mode.
Open Calculator โPercentage Calculator (3-in-1)
Calculate what is X% of Y, percentage increase/decrease, and X is what percent of Y.
Open Calculator โFraction Arithmetic Calculator (+, โ, ร, รท)
Add, subtract, multiply, and divide fractions with step-by-step common denominators and simplification.
Open Calculator โFraction to Decimal Calculator
Convert proper and improper fractions or mixed numbers into terminating or repeating decimals.
Open Calculator โDecimal to Fraction Calculator
Convert any decimal number into a simplified proper fraction, improper fraction, or mixed number.
Open Calculator โMixed Numbers Calculator (ยฝ)
Add, subtract, multiply, and divide mixed numbers with whole numbers and proper fractions.
Open Calculator โFraction Simplifier & Reducer
Reduce fractions to their simplest lowest terms using the Greatest Common Divisor (GCD).
Open Calculator โGCF & LCM Calculator
Find the Greatest Common Factor (GCF) and Least Common Multiple (LCM) of multiple integers.
Open Calculator โPrime Factorization & Factor Tree Calculator
Find prime factors, exponential prime decomposition, all positive divisors, and factor count.
Open Calculator โRatio & Proportion Calculator (A:B = C:D)
Solve proportions (A : B = C : D), simplify multi-term ratios, and divide amounts proportionally.
Open Calculator โQuadratic Formula Solver (axยฒ + bx + c = 0)
Solve quadratic equations with real and complex roots, discriminant analysis (ฮ = bยฒ - 4ac), and vertex.
Open Calculator โMean, Median, Mode & Range Calculator
Find the average (mean), middle value (median), most frequent value (mode), and range for any data set.
Open Calculator โStandard Deviation & Variance Calculator
Calculate sample and population standard deviation (s, ฯ), variance (sยฒ, ฯยฒ), and sum of squares with deviation steps.
Open Calculator โCombination & Permutation Calculator (nCr / nPr)
Calculate combinations (nCr) and permutations (nPr) with factorials, step-by-step product expansion, and locks/arrangements explanations for probability problems.
Open Calculator โScientific Notation Calculator & Converter
Convert standard numbers to scientific notation (a ร 10แต), engineering notation, and E-notation format.
Open Calculator โExponent & Power Calculator (xสธ)
Calculate base raised to any power (xสธ), including negative, fractional, and zero exponents.
Open Calculator โSlope Calculator (Slope, Intercept, Equation & Distance)
Find the slope of a line through two points with rise over run, y-intercept, straight-line equation, angle of inclination, and point-to-point distance.
Open Calculator โProbability Calculator (Events, Odds & Dice Sums)
Calculate single-event probability, complement, odds, and 1-in-x chances, plus dice-sum probabilities with the full outcome distribution table.
Open Calculator โPythagorean Theorem Calculator (Right Triangle Solver)
Find any missing side of a right triangle with the Pythagorean theorem, plus area, perimeter, and both acute angles with step-by-step substitutions.
Open Calculator โRandom Number Generator (Range, Unique, Sorted)
Generate secure random numbers in any range with count, unique-draw, and sort options, plus generation history and the odds behind every draw.
Open Calculator โWeighted Grade Calculator (Final Exam Requirement)
Weighted course grade and letter grade from category percentages, plus the final exam score needed to reach any target class average.
Open Calculator โGPA Calculator (Cumulative & Weighted)
Letter grades and credits in, term GPA out โ with cumulative GPA from prior terms, quality-point totals, and 4.0 / 4.3 / 5.0 scale switching.
Open Calculator โDiscount Calculator (Percent Off + Coupon + Tax)
Stack two percent-off deals, a coupon, quantity, and sales tax to get the final price, the per-item price, and exactly how much you saved.
Open Calculator โRoman Numeral Converter (Numbers โ Roman Numerals)
Two-way converter for 1โ3999 with a live digit-by-digit breakdown, canonical-form checking, and the subtractive rule demonstrated on every value.
Open Calculator โFoundations of Mathematical Computation: Fractions, Algebra & Solvers
From Fundamental Arithmetic to Polynomial Algebraic Equations
Key Takeaway: Our mathematics suite covers each level of numerical problem solving with step-by-step algebraic breakdowns.
Mathematics is the foundational language of science, engineering, economics, and computational technology. Our mathematical calculators are engineered to eliminate arithmetic tedium while providing crystal-clear step-by-step derivations for educational mastery.
1. Core Mathematical Tools Directory
| Tool Name | Primary Operations | Key Formula / Algorithm |
|---|---|---|
| Fraction Operations Calculator | Addition, Subtraction, Multiplication, Division | Least Common Denominator (LCD) & Reciprocals |
| Percentage Calculator (3-in-1) | Percent change, part of whole, difference | $\%\text{ Change} = \frac{V_2 - V_1}{V_1} \times 100\%$ |
| Quadratic Equation Solver | Find roots of 2nd-degree polynomials | $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$ |
| Mean, Median, Mode | Measures of central tendency | $\bar{x} = \sum x / n$ |
Frequently Asked Questions (Math)
Our calculation engines use high-precision numerical arithmetic with automatic rational fraction reduction and epsilon threshold rounding to prevent floating-point binary conversion errors.
Step-by-step solutions allow students, educators, and professionals to verify the exact algebraic rules, common denominators, and variable substitutions used to reach the final answer.