- Fraction Calculator
- Matrix Calculator
- Slope Calculator
- Algebra Calculator
- Trigonometry Calculator
- Percentage Calculator
- Probability Calculator
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Z-Score CalculatorCalculate the z-score (standard score) of a value with z = (x − μ) / σ. Enter the raw value, mean, and standard deviation to get an instant result.
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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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Range CalculatorFind the range of a data set instantly. Enter your numbers and get the range (max − min), maximum, minimum, and count — free statistics tool.
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Stock Price Percent Gain/Loss CalculatorCalculate the percentage gain or loss on a stock from its buy and sell price. Get profit per share and total profit instantly. Free and universal.
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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.
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Sales Tax Backed Out of Total CalculatorBack out the sales tax from a tax-inclusive total. Enter the gross amount and tax rate to find the net price and the tax included.
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X-Intercept CalculatorFind the x-intercept of a line from its slope-intercept equation y = mx + b. Set y = 0 and solve x = −b/m with worked steps.
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Factor Out the GCF from a Polynomial CalculatorFactor out the greatest common factor (GCF) from any polynomial. Enter the terms and get the fully factored form with steps. Free and instant.
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30 Percent Off CalculatorCalculate 30% off any price instantly. Enter the original price to see the discounted sale price and the exact amount you save.
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Percent Grade to Degrees CalculatorConvert a percent grade (slope) into degrees instantly. Enter the grade % to get the slope angle in degrees and radians using arctangent.
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Target Heart Rate Zone Percentage CalculatorCalculate your target heart rate at any exercise intensity percentage using your age and the 220-minus-age maximum heart rate formula.
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Alcohol Proof to Percentage (ABV) CalculatorConvert US alcohol proof to percentage alcohol by volume (ABV) instantly. Just divide proof by 2 — enter the proof to get the exact ABV percentage.
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15 Percent Tip CalculatorCalculate a 15% tip and total bill instantly. Enter your bill amount, optionally split between people, and see the tip and total per person.
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20 Percent Off CalculatorCalculate 20% off any price instantly. Enter the original price to see the sale price and how much money you save with a 20 percent discount.
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50% Off CalculatorCalculate 50 percent off any price instantly. Enter the original price to see the half-off sale price and how much money you save.
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Two-Thirds (2/3) as a Percentage CalculatorConvert any fraction or part-out-of-number into a percentage instantly. Enter numerator and denominator to get the percent and decimal value.
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Win Rate CalculatorCalculate your win rate percentage from wins and games played. Free win rate calculator for esports, sports, gaming and matches with instant results.
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3D Vector Cross Product CalculatorCompute the cross product of two 3D vectors a × b instantly. Get each component (x, y, z) plus the magnitude of the resulting perpendicular vector.
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Number Base Converter CalculatorConvert numbers between binary, octal, decimal, and hexadecimal. Free base converter using place value and repeated division with worked steps.
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Grade Percentage Needed CalculatorFind the average score you need on the remaining work to hit your target final grade, based on your current grade and weight completed.
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De Moivre's Theorem CalculatorApply De Moivre's theorem to raise a complex number in polar form (r∠θ) to a power n. Get modulus, angle, and rectangular a+bi form instantly.
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Arithmetic Sequence CalculatorCompute the nth term (aₙ) and the sum (Sₙ) of an arithmetic sequence from the first term, common difference, and term position.
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Original Value Before Percent Change CalculatorFind the original value before a percent increase or decrease. Enter the final value and percent change to reverse-calculate the starting amount instantly.
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Slope-Intercept from Standard Form CalculatorConvert a linear equation Ax + By = C into slope-intercept form y = mx + b. Instantly find the slope m = -A/B and y-intercept b = C/B.
