Math and Statistics

  • Evaluate an Expression by Substitution Calculator
    Substitute variable values into the expression a·x + b·y + c and simplify instantly. See each term and the final evaluated result step by step.
  • Base Conversion Calculator
    Convert numbers between binary, octal, decimal and hexadecimal. Enter any value, pick the source and target base, and get the result instantly.
  • Whole Number Percentage of Total Calculator
    Find what percentage one number is of another. Enter a part and a whole to get the percent and decimal value instantly with this free calculator.
  • Rounding Calculator
    Round any number to the nearest whole, tenth, hundredth, ten, hundred or thousand. See the rounded value and the difference instantly.
  • Compare Fractions Calculator
    Compare two fractions instantly using cross multiplication. See which fraction is greater, smaller, or equal plus decimal values.
  • Slope from Rise over Run Calculator
    Calculate the slope (m) of a line from rise over run. Enter vertical rise and horizontal run to get slope, percent grade, and angle of incline.
  • Y-Intercept Calculator
    Find the y-intercept of a line from its equation. Works for slope-intercept (y = mx + b) and standard form (Ax + By = C). Free and instant.
  • Percent Off Calculator
    Find the discount percentage from an original price and a sale price. Instantly see the percent off and the amount you saved.
  • Solve Proportion for Percent Calculator
    Solve the proportion part = (percent/100) × whole. Enter a percent and a whole number to instantly find the part. Free, fast, and accurate.
  • Percent Proportion Solver for X
    Solve the percent proportion part/whole = percent/100 for any unknown. Find the part, the whole, or the percent instantly with steps.
  • Ohm's Law Solver (V = IR)
    Solve Ohm's Law (V = IR) for voltage, current, or resistance. Enter any two values to instantly find the third, plus power dissipation.
  • Fraction to Decimal Calculator
    Convert any fraction a/b to a decimal instantly. Enter the numerator and denominator to get the exact decimal value and percentage equivalent.
  • Adding and Subtracting Polynomials Calculator
    Add or subtract two polynomials instantly. Enter expressions like 3x^2 + 2x - 5, choose + or -, and get the simplified result with like terms combined.
  • Function Transformation Calculator
    Apply shifts, stretches, and reflections to a function using g(x)=a·f(b(x−h))+k. Enter a, b, h, k and evaluate the transformed value at any x.
  • Square Root of a Negative Number Calculator
    Find the square root of a negative number as a pure imaginary number. Enter any real value to get the form bi (or a real root when positive).
  • Markup Calculator
    Free markup calculator: enter cost and markup percentage to find selling price, profit, and profit margin instantly. Simple cost-to-price formula.
  • Multiply & Divide Fractions Calculator
    Multiply or divide two fractions and get the answer as a fully reduced fraction plus its decimal value. Free, instant, step-by-step formula included.
  • Binomial Expansion Full Coefficients Calculator
    Expand (a+b)^n and list every binomial coefficient C(n,k) and term. Free calculator for the binomial theorem with full step-by-step output.
  • Complex Number Power Calculator
    Raise a complex number a+bi to any power n using De Moivre theorem. Get the rectangular result, modulus and argument instantly.
  • Quadratic Sequence nth Term Calculator
    Find the nth-term rule Tn = an²+bn+c of a quadratic sequence from its first three terms, plus the value of any chosen term n.
  • Complex Number Square Root Calculator
    Compute the principal square root of any complex number a + bi instantly. Get the real and imaginary parts, modulus, and the second root.
  • Linear Equation from a Table of Values Calculator
    Find the linear equation y = mx + b from two points in a table of values. Computes slope and y-intercept instantly with steps.
  • Expand and Simplify Expression Calculator
    Expand and simplify (a·x+b)(c·x+d) with the distributive property and FOIL method. Get the simplified A·x²+B·x+C result instantly with steps.
  • Percent Tip Calculator
    Calculate the tip and total from any bill amount and tip percentage. Split the bill between people for a clean per-person amount.

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