Calculators
Calculators
Box and Whisker Plot Maker
Turn one or more datasets into box-and-whisker plots with five-number summary, mean, standard deviation, and outlier detection.
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Blood Donation Time Calculator
Calculate your next eligible blood donation date based on your last donation and donation type, using common waiting-period guidelines.
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Bitwise Calculator
Perform AND, OR, XOR, NAND, NOR, XNOR, NOT, and bit shift operations on binary, octal, decimal, or hexadecimal numbers.
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Binary Calculator
Add, subtract, multiply, and divide binary numbers directly, with results shown in binary and decimal, plus a binary/decimal converter.
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Big Number Calculator
Perform exact arithmetic on numbers far larger than a normal calculator can handle: addition, subtraction, multiplication, division, exponentiation, square root, factorial, modulo, GCD, and LCM.
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Betting Odds Converter
Convert betting odds between American, Decimal, Fractional, and implied probability formats, with payout, profit, and bookmaker margin (vig) calculations.
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Battery Life Calculator
Estimate how long a battery will last given its capacity, your device's power draw, and a real-world efficiency factor.
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Basic Calculator
A simple, free online calculator for everyday arithmetic, with memory storage, scientific-notation entry, and keyboard support.
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Pressure Converter
Convert pressure between Pa, kPa, MPa, bar, PSI, atm, torr, and inHg all at once, with a visual gauge and presets for tires, bikes, and scuba tanks.
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Average Return Calculator
Calculate a true annualized investment return from irregular, dated cash flows using XIRR, or chain together multiple known returns over different holding periods into one annualized figure.
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Average Rate Of Change Calculator
Calculate the average rate of change of any function f(x) (polynomials, trig, logs, roots, and more) over an interval [a, b], with a graph of the function and its secant line.
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Auto Loan Calculator
Estimate a car loan's monthly payment, total interest, and total cost of ownership, accounting for down payment, trade-in (including negative equity), incentives, sales tax, and fees.
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Auto Lease Calculator
Estimate a car lease's monthly payment with a full depreciation/finance/tax breakdown, solve for the max price that fits a target payment, and convert between money factor and APR.
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At Bats Per Home Run Calculator
Calculate a baseball player's AB/HR power-hitting ratio, see its performance tier, compare against real MLB career leaders, and solve for the at-bats or home runs needed to hit a target ratio.
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Screen Size Calculator
See your screen's real resolution and pixel ratio live, and calculate PPI, pixel pitch, and physical size in inches or centimeters from any diagonal size and resolution.
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Astronomical Unit Converter
Convert astronomical distances between AU, light-years, parsecs, kilometers, and more, with light-travel time and a cosmic scale visualization.
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Aspect Ratio Calculator
Compute missing dimensions from a ratio, simplify pixel dimensions to a ratio, or resize proportionally, with a live preview and common ratio presets.
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ARM Mortgage Calculator
Model the worst-case payment scenario for an adjustable-rate mortgage, with payment shock, a year-by-year schedule, and a fixed-rate comparison.
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Arithmetic Sequence Calculator
Calculate the nth term and sum of an arithmetic sequence, with a sequence preview, bar chart, and reverse lookup for a target value.
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Arithmetic Mean Calculator
Calculate the arithmetic mean, median, mode, range, and both population and sample standard deviation of a dataset, with a dot plot and histogram.
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Area Calculator
Calculate the area of rectangles, triangles, trapezoids, circles, sectors, ellipses, and parallelograms, with a live diagram and instant unit conversions.
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Arctan2 Calculator
Calculate atan2(y, x), the angle of a point in the Cartesian plane, with quadrant detection, normalized angle, and a step-by-step breakdown.
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Arcsin Calculator
Calculate the arcsine (inverse sine) of a value in degrees or radians, with special-angle detection and a unit circle visualization.
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Arccos Calculator
Calculate the arccosine (inverse cosine) of a value in degrees or radians, with special-angle detection.