Use free calculators for percentages, fractions, exponents, logarithms, nth root, ratios, slope, percent error, and other common algebra problems.
Calculators in this category
- Math Calculator — Use a simple on-screen calculator for quick arithmetic.
- Percentage Calculator — Solve percentage, percentage change, and percentage-of problems.
- Fraction Calculator — Add, subtract, multiply, or divide fractions and simplify the result.
- Exponent Calculator — Calculate powers and exponential expressions.
- Logarithm Calculator — Find common, natural, or custom-base logarithms.
- Nth Root Calculator — Calculate square roots, cube roots, and other nth roots.
- Ratio Calculator — Solve ratio and proportion problems.
- Pythagorean Theorem — Find the missing side of a right triangle.
- Slope Calculator — Calculate slope and line details from two points.
- Percent Error Calculator — Measure the difference between observed and expected values.
- Random Number Generator — Generate random numbers inside a range.
- Permutation & Combination Calculator — Compute P(n,r) and C(n,r) plus n!, with and without repetition -- the foundation of probability and counting.
- Quadratic Equation Calculator — Solve any ax² + bx + c = 0 with real or complex roots, vertex, axis of symmetry and discriminant.
- Linear Equation Solver — Solve single-variable equations (ax + b = c) and two-variable systems with step-by-step working.
- Long Division Calculator — Divide two integers and get the quotient, remainder, and step-by-step working for school maths.
- Number Sequence Calculator — Find the nth term and sum for arithmetic, geometric, or Fibonacci sequences.
- Rounding Calculator — Round any number to decimal places, significant figures, or the nearest 10, 100, or 1000.
- Half-Life Calculator — Enter initial amount, half-life, and elapsed time to find how much radioactive or decaying material remains.
- Matrix Calculator — Add, subtract, multiply, transpose, or find the determinant and inverse of matrices typed as comma-separated rows.
- Scientific Notation Calculator — Convert between decimal form and scientific notation (a × 10ⁿ) — type either format and get both results instantly.
- Big Number Calculator — Add, subtract, multiply, divide, exponentiate, or find GCD of integers too large for a normal calculator — arbitrary precision with whole numbers.
- Compare Fractions Calculator — Compare two fractions — greater, less, or equal — using cross multiplication without converting to decimals.
- Cubic Equation Calculator — Solve ax³ + bx² + cx + d = 0 — real roots via Cardano and trigonometric methods when needed.
- Decimal to Fraction Calculator — Convert a decimal to a fraction in lowest terms — find the exact or best rational approximation.
- Dot Product Calculator — Compute the dot product of 2D or 3D vectors — a·b, magnitudes, and cosine of the angle between them.
- Factorial Calculator — Compute n! — the product 1 × 2 × … × n — for counting and probability problems.
- FOIL Method Calculator — Expand (ax + b)(cx + d) with FOIL — First, Outer, Inner, Last — and collect like terms.
- Fraction to Decimal Calculator — Divide numerator by denominator to get the decimal — flags repeating decimals when detected.
- Golden Ratio Calculator — Calculate φ ≈ 1.618 — multiply, divide, raise to powers, or check segment ratios for golden proportions.
- Mixed Numbers Calculator — Add or subtract mixed numbers — whole plus fraction parts — and get the result as a mixed number and improper fraction.
- Modulo Calculator — Find a mod b — the remainder after division — plus quotient and verification steps.
- Multiples Calculator — List the first N multiples of any integer — 7, 14, 21, … — for times tables and LCM groundwork.
- Number to Words Calculator — Convert amounts to words in Indian numbering — lakh, crore, paise — with a ready-to-copy cheque line.
- Order of Operations Calculator — Evaluate arithmetic expressions with PEMDAS — parentheses, exponents, multiply/divide, add/subtract.
- Pascal's Triangle Calculator — Generate row n of Pascal's triangle — binomial coefficients C(n,k) and their sum 2ⁿ.
- Significant Figures Calculator — Count significant figures in any number and round to a chosen number of sig figs for lab reports and homework.
- Simplify Fractions Calculator — Reduce any fraction to lowest terms by dividing numerator and denominator by their GCD.
- Trigonometry Calculator — Compute sin, cos, tan and inverse functions for angles in degrees — quick trig for homework and engineering sketches.
- Absolute Value Calculator — Find |x| or the absolute difference |a − b| — distance from zero or between two numbers.
- Completing the Square Calculator — Rewrite ax² + bx + c in vertex form — find the vertex, discriminant, and real roots.
- Cube Calculator — Cube any number — compute n³ = n × n × n for integers, decimals, and negatives.
- Cube Root Calculator — Find ∛n — the number that cubed equals n — for positive and negative inputs.
- Difference of Two Squares Calculator — Factor a² − b² as (a + b)(a − b) and compute the numeric difference of two squared values.
- Fractional Exponents Calculator — Evaluate b^(m/n) — fractional powers and roots in one step from base, numerator, and denominator.
- Simplify Radicals Calculator — Simplify √n into a coefficient times a smaller radical — pull out perfect-square factors.
- Solve for Exponent Calculator — Find x in b^x = r using logarithms — solve for the unknown exponent when base and result are known.
- Square Calculator — Square any number — compute n² instantly for integers, decimals, and negative values.
- Square Root Calculator — Find √n in decimal form and simplified radical notation for any non-negative number.
- Circular Permutation Calculator — Count distinct seatings around a round table — (n−1)! arrangements when rotations are identical.
- Combinations with Replacement Calculator — Count unordered selections when items can repeat — C(n+r−1, r) for n types and r picks.
- Fibonacci Calculator — Generate the Fibonacci sequence F_n — each term is the sum of the two before it, starting 1, 1, 2, 3, 5…
- LCD Calculator — Find the least common denominator for a set of fractions — the LCM of all denominators for adding or comparing.
- Permutations with Replacement Calculator — Count ordered arrangements when items can repeat — n^r for n choices per slot and r positions.
- Place Value Calculator — Break a number into digit places — ones, tens, hundreds — and show word form in English or Indian numbering.
- Unit Rate Calculator — Find price per unit — divide total cost by quantity to compare deals and normalize rates.