Math Calculators
Solve arithmetic, percentages, averages, algebra, geometry, and advanced mathematics problems.
Arithmetic Mean Calculator
Calculate the arithmetic mean, median, sum, count, variance, and standard deviation for any dataset with step-by-step steps.
Average Calculator
Compute the arithmetic mean, median, mode, sum, count, and range for any set of numbers.
Bayes' Theorem Calculator
Calculate conditional posterior probability P(A|B), positive predictive value (PPV), false positives, and medical test accuracy.
Best Scientific Calculator
Advanced online scientific calculator. Trigonometric functions (sin, cos, tan), natural and common logarithms, powers, roots, factorials, and memory.
Bin Packing Calculator
Solve 1D Bin Packing Problems using First Fit Decreasing (FFD) and Best Fit Decreasing (BFD) heuristics with theoretical minimum lower bounds.
Binomial Probability Calculator
Compute exact P(X=k) and cumulative binomial probabilities P(X≤k), P(X≥k), distribution mean, variance, and standard deviation.
Chi Square Calculator
Compute Pearson Chi-Square test of independence (χ²), degrees of freedom, p-value, expected frequencies, and Cramer’s V for 2x2 contingency tables.
Circle Calculator
Calculate circle area, circumference, diameter, radius, arc length, and sector area with step-by-step geometric derivations.
Coin Flip Probability Calculator
Calculate probabilities for coin toss trials, exact heads/tails count, at least k heads, and consecutive streak probabilities.
Common Logarithm Calculator (log₁₀)
Calculate common base-10 logarithms (log₁₀ x) with characteristic, mantissa, and scientific notation connections.
Compound Interest Calculator with Monthly Deposits
Calculate investment growth over time with compound interest, regular monthly deposits, custom compounding schedules, and visual breakdowns.
Concrete Calculator
Calculate concrete volume in cubic yards and cubic meters, ready-mix truckloads, and pre-mixed bag quantities with customizable waste factor.
Cone Calculator
Calculate right circular cone volume, total surface area, lateral (conical) surface area, slant height, and base area with step-by-step steps.
Cosine Calculator (cos)
Calculate the cosine of any angle in degrees or radians. Shows unit circle coordinates, exact values for special angles, and step-by-step steps.
Cotangent Calculator (cot)
Calculate the cotangent of any angle in degrees or radians. Identifies undefined points, exact values for special angles, and reciprocal trig.
Cube Calculator
Calculate cube volume, total surface area, lateral surface area, space diagonal, and inradius from side length with step-by-step steps.
Cube Calculator (x³)
Calculate the cube of any positive or negative number (x³ = x × x × x) with scientific notation and step-by-step arithmetic.
Cube Root Calculator
Calculate the principal real cube root of positive and negative numbers. Identifies perfect cubes, nearest integer roots, and complex conjugate roots.
Cuboid Calculator
Calculate cuboid (rectangular prism) volume, total surface area, lateral area, and space diagonal from length, width, and height.
Cylinder Calculator
Calculate right circular cylinder volume, total surface area, lateral (curved) surface area, and base area from radius and height.
Dice Probability Calculator
Calculate dice rolling probabilities for any number of dice across d4, d6, d8, d10, d12, d20, and d100 with exact, at least, and at most sums.
Equation Solver
Solve linear equations (ax+b=0), quadratic equations (ax²+bx+c=0 with discriminant Δ and complex roots), and 2x2 systems with step-by-step solutions.
Grade Calculator
Calculate weighted semester grades, GPA equivalents, and determine the exact score needed on the final exam to achieve your target letter grade.
Hexagon Calculator
Calculate regular hexagon area, perimeter, apothem, long diagonal, short diagonal, and circumradius with step-by-step steps.
Hypergeometric Distribution Calculator
Calculate probabilities for sampling without replacement, card draws, lottery ball selections, and quality inspection batches.
Inch to CM Converter
Convert inches to centimeters (cm) and cm to inches with exact decimals, millimeters, feet & inches, and nearest 1/16" and 1/32" fractions.
Linear Equation Calculator
Solve linear algebraic equations of the form ax + b = c with full step-by-step mathematical deduction and solution classification.
Loan Calculator
Calculate monthly loan payments, total interest paid, and full loan amortization schedules for personal, auto, or business loans.
Logarithm Calculator
Calculate logarithms with any arbitrary positive base (log_b x) using the change of base formula with step-by-step mathematical steps.
Lottery Odds Calculator
Calculate jackpot and secondary tier odds for Powerball, Mega Millions, and custom multi-ball lotteries with expected value.
Natural Logarithm Calculator (ln)
Calculate the natural logarithm (ln x = log_e x) with base e ≈ 2.718281828 with step-by-step calculus and exponential properties.
Normal Distribution Calculator
Calculate probabilities and percentiles for standard and general normal distributions, z-scores, and interval areas.
Nth Power Calculator
Calculate any base raised to the power of n (x^n) for positive, negative, and fractional exponents with step-by-step exponent laws.
Nth Root Calculator
Calculate the nth root of any number (ⁿ√x). Supports even and odd roots, real roots, radical expressions, and step-by-step solutions.
Odds Probability Calculator
Convert between probability percentages, decimal odds, fractional odds, and American moneyline odds with payout estimates.
Online Calculator
Free standard online digital calculator with memory, square root, percentage, calculation tape history, and full keyboard shortcut support.
Parallelogram Calculator
Calculate parallelogram area, perimeter, base, height, and side lengths with step-by-step geometric formulas.
Partial Fraction Decomposition Calculator
Decompose rational functions P(x)/Q(x) into partial fractions with linear and repeated roots using Heaviside’s cover-up method for calculus integration.
Pentagon Calculator
Calculate regular pentagon area, perimeter, apothem, diagonals, and interior angles from side length with step-by-step math.
Percentage Calculator
Quickly calculate percentages, find what percentage one number is of another, and compute percent changes.
Percentage Decrease Calculator
Calculate the percentage drop, markdown, or reduction between two numbers with absolute difference and step-by-step arithmetic.
Percentage Increase Calculator
Calculate the percentage increase or decrease between two values, along with absolute difference and growth multipliers.
Percentage of Time Calculator
Find what exact hours, minutes, and seconds equal a specified percentage of any day, week, month, or custom duration.
Permutations and Combinations Calculator
Calculate combinations nCr and permutations nPr with or without repetition, factorial expansions, and subset ordering.
Poker Odds Calculator
Evaluate 5-card poker hand probabilities, Texas Hold'em pot odds, hand equity, outs, and the Rule of 4 and 2.
Prism Calculator
Calculate volume, lateral surface area, total surface area, and base parameters for triangular, rectangular, and hexagonal prisms.
Probability Calculator
Calculate the probability of single events, union of events, intersection, conditional probability P(A|B), and complements.
Pyramid Calculator
Calculate pyramid volume, total surface area, lateral area, and slant heights for square and rectangular pyramids with step-by-step steps.
Pythagorean Theorem Calculator
Solve a² + b² = c² for missing hypotenuse or leg with step-by-step radical simplification and exact decimal solutions.
Quadratic Equation Calculator
Solve quadratic equations ax² + bx + c = 0 using the quadratic formula. Computes discriminant Δ, real and complex conjugate roots, vertex, and axis of symmetry.
Rectangle Calculator
Calculate rectangle area, perimeter, diagonal, and aspect ratio from length and width with complete mathematical steps.
Regular Polygon Calculator
Calculate regular n-sided polygon area, perimeter, apothem, circumradius, interior angles, and exterior angles with step-by-step steps.
Reverse Percentage Calculator
Find the original number before a percentage increase or decrease was applied with reverse arithmetic equations.
Rhombus Calculator
Calculate rhombus area, perimeter, side length, diagonals, altitude, and inradius with step-by-step geometric solutions.
Right-Angled Triangle Calculator
Solve right triangles with hypotenuse, legs, area, perimeter, altitude, and acute angles using trigonometry and the Pythagorean theorem.
Sine Calculator (sin)
Calculate the sine of any angle in degrees or radians. Shows unit circle coordinates, exact values for special angles, and step-by-step steps.
Sphere Calculator
Calculate sphere volume, surface area, diameter, and great circle circumference from radius with step-by-step mathematical deduction.
Sphere Packing Calculator
Calculate sphere packing density, discrete count, Kepler maximum theoretical bound (74.05%), and void volume in boxes, cylinders, and vessels.
Square Calculator
Calculate square area, perimeter, diagonal, inradius, and circumradius from side length with step-by-step formulas.
Square Calculator (x²)
Calculate the square of any positive or negative number (x² = x × x) with scientific notation and step-by-step arithmetic.
Square Root Calculator
Calculate the square root of positive and negative numbers (√x). Provides radical simplification, perfect square check, and imaginary roots.
Student T Value Calculator
Calculate Student t critical values (t*) and p-values for one-tailed and two-tailed tests from degrees of freedom and significance level alpha.
System of Linear Equations Calculator
Solve simultaneous 2x2 and 3x3 systems of linear equations using Cramer’s Rule and matrix determinants with step-by-step work.
Tangent Calculator (tan)
Calculate the tangent of any angle in degrees or radians. Identifies vertical asymptotes, exact values for special angles, and ratios.
Time Percentage Calculator
Calculate what percentage of a day, shift, project, or custom timeframe has elapsed with intuitive progress bars.
Tip Calculator
Calculate restaurant tips, split bills equally among friends, and round up totals cleanly for stress-free dining.
Trapezium Calculator
Calculate trapezium (trapezoid) area, perimeter, mid-segment (median), bases, and height with step-by-step mathematical steps.
Triangle Calculator
Calculate triangle area using Heron’s formula or base and height, perimeter, semi-perimeter, inradius, and classification.
Weighted Average Calculator
Calculate weighted arithmetic mean, sum of products, total weights, and percentage distribution with customizable data pairs.
Wood Calculator
Calculate lumber board feet (BF), linear footage, cubic volume, and material costs for woodworking, milling, and carpentry.
Frequently Asked Questions about Math Calculators
Are the calculators in this category free to use?
Yes. All math calculators on Calculat.dev are 100% free with no account registration or limits.
Are my calculation inputs saved on a database?
No. Every calculation executes client-side directly in your browser. No personal or numeric inputs are recorded or transmitted to any server.
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Finance Calculators
Calculate loans, mortgages, compound interest, investments, savings, and retirement planning.
Health Calculators
Monitor your body mass index (BMI), calories, ideal weight, body fat, and wellness metrics.
Date & Time Calculators
Calculate exact age, days between dates, time durations, work days, and countdowns.
Everyday Calculators
Everyday utilities including restaurant tip splitting, discounts, gas mileage, and cooking conversions.