• Hyperbola Equation Calculator
    Calculate a horizontal hyperbola from its standard equation: find center, vertices, foci, focal distance c, asymptote slopes and eccentricity instantly.
  • FOIL Calculator
    Multiply two binomials using the FOIL method. Enter coefficients a, b, c, d to expand (ax+b)(cx+d) into a quadratic, with First, Outer, Inner, Last steps.
  • Interval Notation Calculator
    Convert inequalities to interval notation instantly. Enter lower and upper bounds with open or closed endpoints to get interval, inequality, and set notation.
  • Exponential Equation Solver (a·bˣ = c)
    Solve exponential equations of the form a·b^x = c for x using logarithms. Enter the coefficient, base, and result to find x instantly.
  • Reverse Percentage Calculator
    Find the original number before a percentage increase or decrease. Enter the final value and the percent change to reverse-calculate the starting amount.
  • Mixture Problem Calculator
    Solve mixture and concentration blending problems. Combine two solutions of different strengths and find the final concentration, total volume, and solute.
  • Quadratic Equation From Roots Calculator
    Build a quadratic equation ax² + bx + c = 0 from its two roots and an optional leading coefficient. Instantly get the coefficients a, b, and c.
  • Vertex Form to Standard Form Calculator
    Convert a quadratic from vertex form a(x-h)²+k to standard form ax²+bx+c instantly. Enter a, h, and k to get the b and c coefficients.
  • Distance-Rate-Time Solver
    Solve the distance, rate, and time equation. Enter any two values to compute the third using d = r×t, r = d/t, or t = d/r. Free, instant.
  • Work Rate (Combined Work) Calculator
    Solve combined work-rate word problems instantly. Enter how long each worker takes alone and find how long they need to finish the job together.
  • Order of Operations Calculator
    Evaluate any math expression using PEMDAS/BODMAS order of operations — parentheses, exponents, multiplication, division, addition, subtraction.
  • Percent to Decimal & Fraction Calculator
    Convert any percentage to its decimal value and a reduced (simplified) fraction instantly. Free, accurate percent-to-decimal and percent-to-fraction tool.
  • Rationalize the Numerator Calculator
    Find the distance between two points (x₁,y₁) and (x₂,y₂) using the distance formula d = √((x₂−x₁)² + (y₂−y₁)²). Fast and exact.
  • Infinite Geometric Series Calculator
    Calculate the sum of an infinite geometric series using S = a/(1−r). Enter the first term and common ratio; checks convergence when |r| < 1.
  • Half-Life Decay Calculator
    Calculate remaining quantity after radioactive or exponential decay using half-life. Get fraction remaining, amount decayed, decay constant and mean lifetime.
  • Function End Behavior Calculator
    Convert a line from slope-intercept form y = mx + b into standard form Ax + By = C instantly. Enter slope and y-intercept to get A, B, and C.
  • Finite Geometric Series Sum Calculator
    Compute the sum of the first n terms of a geometric series with Sₙ = a₁(1−rⁿ)/(1−r). Enter first term, common ratio, and number of terms.
  • Permutation (nPr) Calculator
    Calculate permutations nPr = n! / (n−r)! instantly. Find the number of ordered arrangements when choosing r items from n. Free, fast, and accurate.
  • Absolute Value Graph Vertex Calculator
    Free combination (nCr) calculator. Find how many ways to choose r items from n where order does not matter, using C(n,r) = n!/(r!(n-r)!).
  • Midpoint Calculator
    Find the midpoint of a line segment between two points (x₁,y₁) and (x₂,y₂) instantly using the midpoint formula. Free, fast, step-by-step.
  • Linear Equation Solver (ax + b = c)
    Solve any linear equation of the form ax + b = c instantly. Enter the coefficients a, b and c to find x = (c − b) / a with full steps.
  • Multiply Powers with the Same Base Calculator
    Free calculator to multiply powers with the same base using a^m × a^n = a^(m+n). Add the exponents and get the simplified result instantly.
  • Percent Difference Calculator
    Calculate the percent difference between two values using |a−b| ÷ average × 100. Free, instant percentage difference calculator with worked example.
  • Simple Interest Formula Calculator
    Calculate simple interest with the I = PRT formula. Enter principal, annual rate, and time to find interest earned and the total amount.