Calculator and unit converter tools

Browse the complete topic

This focused collection connects to the broader catalog categories.

• ADA Wheelchair Ramp Slope CalculatorPlan equal ramp runs, landings, and straight or turning footprints. Check slope, rise, width, handrails, and available length.
• Area ConverterConvert area with clear, adjustable controls. Enter the required values, adjust the options, and review the calculated result.
• Bitwise AND CalculatorApply a repeating key with bitwise AND to bytes from text. Review decimal byte values.
• Bitwise Left RotatorRotate bits left within bytes from text. Choose the amount and whether bits carry between bytes.
• Bitwise Right RotatorRotate bits right within bytes from text. Choose the amount and whether bits carry between bytes.
• Brute Force for XOR Cipher ProcessorApply XOR Brute Force with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review the result.
• Byte Addition CalculatorAdd a repeating key to bytes from text, wrapping each sum modulo 256. Review decimal byte values.
• Byte Subtraction CalculatorSubtract a repeating key from bytes from text, wrapping each difference modulo 256. Review decimal byte values.
• Byte Unit ConverterConvert values between digital data units.
• Cartesian Product CalculatorList every combination from two or more sets, such as sizes × colors. Enter one comma-separated set per line.
• Chi Square CalculatorCalculate a result with Chi Square from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Decimal, Hex, Binary and Octal ConverterConvert decimal to hex, hex to decimal, binary, or octal. Preserve large integer precision and convert signed numbers directly in your browser.
• Distance ConverterConvert distance with clear, adjustable controls. Enter the required values, adjust the options, and review the calculated result.
• Divide CalculatorCalculate a result with Divide from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Extended GCD CalculatorCalculate a result with Extended GCD from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Fraction Multiplication CalculatorMultiply two fractions exactly and simplify the product. Enter signed integer numerators and nonzero denominators to see the reduced fraction.
• Geometric Mean CalculatorCalculate the geometric mean of positive numbers using logarithms. Enter values and inspect the result without multiplying large inputs directly.
• Long Division Calculator with StepsCalculate long division with steps, quotient, and remainder. Divide whole numbers exactly and check each subtraction in your browser.
• Mass ConverterConvert mass with clear, adjustable controls. Enter the required values, adjust the options, and review the calculated result.
• Mean CalculatorCalculate the arithmetic mean of decimal numbers. Separate values with commas, spaces, semicolons, or new lines.
• Median CalculatorFind the median of an unsorted number list. Odd counts return the middle value; even counts average the middle two. Negative values are supported.
• MOD CalculatorCalculate a result with MOD from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Modular Exponentiation CalculatorCalculate a result with Modular Exponentiation from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Modular Inverse CalculatorCalculate a result with Modular Inverse from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Multiply CalculatorCalculate a result with Multiply from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Net Ionic Equation CalculatorPredict double-replacement products from two reactants. Balance molecular and ionic equations, cancel spectators, and explain solubility rules.
• NOT CalculatorCalculate a result with NOT from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Number to Words ConverterCalculate a result with Number to Words from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Numberwang CalculatorCalculate a result with Numberwang from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Ohm's Law CalculatorCalculate a result with Ohm's Law from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• OR CalculatorCalculate a result with OR from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Polynomial Long and Synthetic Division CalculatorDivide polynomials with exact fractions, aligned long division, and expanded synthetic division. Check each quotient and remainder.
• Power Set CalculatorList every subset of up to 13 items, including the empty set. A set of n items gives 2ⁿ subsets, one per line.
• Punnett Square CalculatorCalculate exact genotype and phenotype ratios for up to four genes, ABO/Rh blood types, and recessive X-linked classroom crosses.
• ROR13 Cipher ProcessorApply ROR13 with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review the result.
• ROT13 Encoder and DecoderEncode or decode text with the ROT13 substitution.
• ROT8000 Cipher ProcessorApply ROT8000 with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review the result.
• Sample Standard Deviation CalculatorCalculate sample standard deviation, variance, mean, and standard error of the mean. Inspect the n minus 1 denominator and sample count.
• Set Difference CalculatorCalculate a result with Set Difference from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Set Intersection CalculatorCalculate a result with Set Intersection from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Set Union CalculatorCalculate a result with Set Union from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• shift left for Bit CalculatorCalculate a result with Bit shift left from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• shift right for Bit CalculatorCalculate a result with Bit shift right from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Slackline Tension CalculatorCalculate a result with Slackline Tension from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Speed ConverterConvert speed with clear, adjustable controls. Enter the required values, adjust the options, and review the calculated result.
• Sphere Area CalculatorCalculate a result with Area of a Sphere from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Sphere Volume CalculatorCalculate the space inside a sphere from its radius. Enter the required values, adjust the options, and review the calculated result.
• Standard Deviation CalculatorCalculate population standard deviation from a number list. See how the n denominator differs from sample standard deviation.
• Subtract CalculatorCalculate a result with Subtract from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• Sum NumbersAdd a list of numbers and show the total.
• Symmetric Difference CalculatorCalculate a result with Symmetric Difference from the values you enter. Enter the required values, adjust the options, and review the calculated result.
• trip voltage drop in cable for Round CalculatorCalculate cable voltage loss across the outgoing and return conductors. Enter the required values, adjust the options, and review the calculated result.
• Weighted Average CalculatorCalculate a weighted average from paired values and weights. Check the total weight and number of pairs in your browser.
• XOR Cipher ProcessorApply XOR with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review the result.

Direct answers

Questions about this tool family

Continue the task

Related collections

• Encryption, decryption, and cipher tools
• Text cleanup and transformation tools
• Data extraction and analysis tools
• Encoding and decoding tools

Evidence-led guidance

Compare methods before you choose a tool

• Convert UNIX Timestamps and Handle Time Zones Safely