- Fraction Calculator
- Matrix Calculator
- Slope Calculator
- Algebra Calculator
- Trigonometry Calculator
- Percentage Calculator
- Probability Calculator
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Summation (Sigma) Notation EvaluatorEvaluate sigma (Σ) summation notation online. Enter f(i), lower and upper limits, and get the exact termwise sum plus first and last terms.
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Complete the Square to Find Circle Center & RadiusConvert the general circle equation x²+y²+Dx+Ey+F=0 to standard form. Instantly find the center (−D/2, −E/2) and radius by completing the square.
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Unit Vector (Normalize) CalculatorNormalize a 2D or 3D vector to a unit vector. Enter X, Y, and optional Z components to get the magnitude and the unit vector û = a / |a|.
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Solve for Needed Score CalculatorFind the exact score you need on a remaining assignment or final exam to reach your target weighted overall grade. Solve for the required grade fast.
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Ratio Sharing CalculatorSplit any total amount into three shares using a ratio a:b:c. Free ratio sharing calculator with instant results and a worked formula example.
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Common Difference CalculatorFind the common difference d of an arithmetic sequence from any two terms. Enter the first term, a later term, and its position to compute d instantly.
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Reduced Row Echelon Form (RREF) CalculatorFree RREF calculator. Reduce any matrix (up to 6x6) to reduced row echelon form using Gauss-Jordan elimination and find the matrix rank instantly.
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Binomial Expansion Specific Term CalculatorFind a specific (kth) term in the binomial expansion of (a+b)^n using T(r+1)=C(n,r)·a^(n−r)·b^r. Shows coefficient and term value.
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Exponential Function from Two Points CalculatorFind the exponential equation y=ab^x passing through two points. Enter (x1,y1) and (x2,y2) to solve the base b and coefficient a instantly.
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Decrease a Number by a Percent CalculatorSubtract a percentage from any number instantly. Enter a starting number and a percent to get the reduced value, plus the exact amount of decrease.
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Simplify Algebraic Expression CalculatorSimplify linear algebraic expressions by combining like terms and applying distribution. Enter coefficients and constants to reduce to ax + b form.
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Solve for X CalculatorSolve for x in linear (ax + b = c) or quadratic (ax² + bx + c = 0) equations. Get exact roots, the discriminant, and step-by-step formulas.
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Solve b^x = c for xSolve the exponential equation b^x = c for the unknown exponent x using logarithms. Free calculator with the formula x = ln(c)/ln(b) and a worked check.
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Break-Even Point CalculatorFind your break-even point in units where total cost equals total revenue. Enter fixed costs, price, and variable cost per unit to solve instantly.
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Celsius–Fahrenheit Formula CalculatorConvert between Celsius and Fahrenheit using the algebraic formulas F = 9/5 C + 32 and C = 5/9 (F − 32). See each step worked out.
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Percent Change Between Two Values CalculatorFind the percent change between an original and new value instantly. Calculate percent increase or decrease with the simple (new-old)/|old| x 100 formula.
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Discount CalculatorFree discount calculator: enter an original price and percent off to instantly find the sale price and how much money you save.
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Modulus of a Complex Number CalculatorFind the modulus (absolute value) of a complex number a + bi using |a+bi| = sqrt(a^2 + b^2). Also shows the argument in radians and degrees.
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Euler's Totient Function CalculatorCompute Euler's totient φ(n) — the count of integers from 1 to n coprime to n — using prime factorization. Free, instant, with worked steps.
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Slope-Intercept Form from a Point and SlopeFind the slope-intercept equation y = mx + b from a known slope and one point. Computes the y-intercept b instantly with steps and examples.
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Simplify Exponents CalculatorSimplify exponent expressions using the product, quotient, and power rules. Enter a base and two exponents to get the simplified power and its value.
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Complete the Pattern: Next Number in Sequence CalculatorFind the next number in a sequence. Automatically detects arithmetic or geometric patterns and predicts the next terms using the common difference or ratio.
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Find the Vertex from Standard Form CalculatorFind the vertex (h, k) of a parabola from standard form ax^2 + bx + c. Enter a, b, c to get the turning point and axis of symmetry instantly.
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GST Percentage CalculatorFree GST calculator to add or remove GST at any percentage. Enter an amount and rate to get the net price, GST amount, and gross total instantly.
