Syed Waleed
Find your next useful tool.
Each tool has one clear purpose. Choose a category below or search the complete A–Z directory. Every workspace includes an example and explains its limits.
Math & Geometry 15 tools
Circle Area and Circumference
Calculate area, circumference and diameter from a radius.
Math & GeometryCylinder Volume and Surface Area
Calculate a closed right cylinder from radius and height.
Math & GeometryExponent Calculator
Raise a number to a power with finite real output.
Math & GeometryGCF and LCM Calculator
Find the greatest common factor and least common multiple.
Math & GeometryLogarithm Calculator
Calculate a logarithm in your chosen base.
Math & GeometryPercentile Calculator
Find an interpolated percentile in a numeric data set.
Math & GeometryPermutation and Combination Calculator
Count ordered arrangements and unordered selections.
Math & GeometryPrime Factorization Calculator
Break a positive whole number into prime factors.
Math & GeometryPrime Number Checker
Check whether a whole number is prime or composite.
Math & GeometryPythagorean Theorem Calculator
Find the hypotenuse from two perpendicular side lengths.
Math & GeometryQuadratic Equation Solver
Solve ax² + bx + c = 0 for real or complex roots.
Math & GeometryRatio Simplifier
Reduce a whole-number ratio to its simplest form.
Math & GeometryRectangle Area and Perimeter
Calculate area, perimeter and diagonal from two sides.
Math & GeometryScientific Notation Converter
Write a finite number in normalized scientific notation.
Math & GeometryTriangle Area Calculator
Calculate area from a base and its perpendicular height.
Text Tools 10 tools
Add or Remove Line Numbers
Add numbered prefixes or strip existing numeric prefixes.
Text ToolsAdd Prefix and Suffix to Lines
Wrap every line with your chosen text.
Text ToolsCharacter Frequency Counter
Count Unicode characters, including spaces and newlines.
Text ToolsText Delimiter Converter
Change a literal separator to another separator.
Text ToolsText Find and Replace
Replace exact text without writing a regular expression.
Text ToolsText Line Filter
Keep or remove lines containing a literal phrase.
Text ToolsText Line Sorter
Sort lines alphabetically or by numeric value.
Text ToolsText Reverser
Reverse graphemes, words or the order of lines.
Text ToolsText Word Wrapper
Wrap paragraphs to a chosen character width.
Text ToolsWhitespace Cleaner
Trim lines, collapse spaces or remove blank lines.
Developer Tools 10 tools
Base32 Encoder and Decoder
Encode UTF-8 text using RFC 4648 Base32.
Developer ToolsCSV Structure Preview
Inspect CSV rows, columns and quoted fields.
Developer ToolsHTML Entity Encoder and Decoder
Encode HTML special characters or decode character entities.
Developer ToolsJSON Key Extractor
List unique object property names throughout a JSON document.
Developer ToolsJSON Leaf Path Explorer
List the paths and values of JSON leaves.
Developer ToolsNumber Base Converter
Convert whole numbers between bases 2 through 36.
Developer ToolsText to Hex Converter
Convert UTF-8 text to hexadecimal bytes and back.
Developer ToolsUnicode Escape Converter
Convert text to JavaScript Unicode escapes and back.
Developer ToolsURL Query String Builder
Encode name/value lines into a URL query string.
Developer ToolsUTF-8 Byte Counter
Compare UTF-8 byte length, code points and UTF-16 units.
Test Data 8 tools
Random Boolean Generator
Generate true/false values with a chosen probability.
Test DataRandom Coordinate Generator
Generate latitude and longitude pairs within geographic bounds.
Test DataRandom Hex String Generator
Generate random byte sequences as hexadecimal strings.
Test DataRandom Number Matrix Generator
Create a rectangular matrix of random whole numbers.
Test DataSample JSON Record Generator
Generate clearly synthetic records for testing a layout.
Test DataTest Email Address Generator
Create placeholder email addresses using example.com.
Test DataTest IPv4 Address Generator
Generate sample IPv4 addresses from documentation ranges.
Test DataTest IPv6 Address Generator
Generate sample IPv6 addresses in the documentation prefix.
Converters 5 tools
Byte Size Converter
Convert a byte count to decimal and binary size units.
ConvertersDecimal Hours to Hours and Minutes
Convert decimal hours to a clock duration and back.
ConvertersRGB to CMYK Approximation
Estimate CMYK percentages from RGB channels.
ConvertersRGB to HSL Converter
Convert RGB channels to hue, saturation and lightness.
ConvertersUnicode Code Point Converter
Inspect Unicode code points or convert decimal values to text.