ConverterAll Converter Categories
Choose a category based on the job you need to finish. Each category groups related tools so users can move from one conversion to the next without starting over.
Category pages now include practical highlights, quick-reference picks, and related category links, so weaker entry pages carry more decision support.
Angle Converter
4 toolsConvert signed angles among degrees, radians, and gradians without normalizing them to one turn.
Area Converter
10 toolsConvert square units, acres, and hectares from squared length definitions and declared international-foot relationships.
CSS Unit Converter
6 toolsConvert CSS px, rem, em, and pt with required root or reference font-size assumptions visible.
Color Converter
12 toolsConvert declared sRGB notations, HSL/HSV coordinates, alpha, and unprofiled CMYK estimates with strict channel grammar.
Cooking Converter
8 toolsConvert U.S. kitchen volume measures, cooking mass units, and selected ingredient estimates without mixing weight, volume, or regional conventions.
Data Storage Converter
12 toolsConvert bits, bytes, and storage prefixes with Decimal SI labels or explicitly selected IEC Binary units.
Developer Tools
12 toolsParse, validate, format, minify, serialize, and convert structured text with explicit algorithm, dialect, schema, and mapping profiles.
Electrical Converter
6 toolsCalculate current and active power with explicit system assumptions, rescale W and kW, or convert a named horsepower convention.
Encoding Tools
12 toolsWork with byte encodings, URL and HTML contexts, Unicode code points, Morse notation, ROT13, and unverified token inspection under declared profiles.
Energy Converter
4 toolsConvert joules, kilojoules, thermochemical calories, and thermochemical kilocalories under a declared convention.
Frequency Converter
4 toolsScale frequencies among Hz, kHz, MHz, and GHz with decimal SI prefixes.
Fuel Economy Converter
2 toolsConvert between US miles per gallon and litres per 100 kilometres with the gallon convention visible.
Image Converter
15 toolsDecode, rasterize, and encode supported image files in the browser with visible format, transparency, animation, and metadata limits.
Length Converter
25 toolsConvert metric and international customary lengths from exact defining relationships rather than shortened reciprocal constants.
Number Systems Converter
16 toolsConvert exact signed integers among binary, octal, decimal, and hexadecimal, or encode text through an explicit UTF-8 or ASCII profile.
Office Converter
10 toolsMove supported XLSX, CSV, JSON, DOCX, HTML, Markdown, and plain-text structure through declared browser conversion profiles.
Online Calculators
6 toolsUse focused calculators for explicit percentage questions, adult BMI screening values, calendar age, and exact fraction input.
PDF Tools
5 toolsMerge, split, rotate, reorder, and create PDF files with explicit page-operation, preservation, encryption, and resource limits.
Pressure Converter
6 toolsConvert psi, bar, kPa, and standard atmosphere without changing a gauge, absolute, or differential pressure reference.
Speed Converter
10 toolsConvert road, technical, nautical, and aviation speed units from exact distance and time definitions.
Temperature Converter
8 toolsConvert temperature readings among Celsius, Fahrenheit, and Kelvin while keeping scale offsets, display rounding, and ordinary physical boundaries in context.
Text Tools
6 toolsCount and transform text under explicitly documented JavaScript token, code-point, code-unit, whitespace, and case-mapping rules.
Time Converter
15 toolsConvert elapsed durations or interpret Unix timestamps with the duration, Julian-year, and UTC rules stated explicitly.
Volume Converter
16 toolsConvert liquid capacity using SI and explicitly declared US liquid or US measuring-unit relationships.
Weight Converter
18 toolsConvert mass among SI, avoirdupois, stone, metric-tonne, and metric-carat units with each convention named.
Category At A Glance
| Category | Tool Count | Typical Use | Start Here |
|---|---|---|---|
| Angle Converter | 4 | 360° equals 2π radians and 400 gon. | Degrees to Radians |
| Area Converter | 10 | Square feet and square metres use the squared international-foot relationship. | SQFT to SQM |
| CSS Unit Converter | 6 | Set the root size for rem conversion. | PX to REM |
| Color Converter | 12 | Use HEX, RGB, HSL, HSV, or RGBA for declared sRGB-derived workflows. | HEX to RGB |
| Cooking Converter | 8 | Use direct U.S. cup, tablespoon, and teaspoon relationships for volume-only recipe steps. | Cups to Grams |
| Data Storage Converter | 12 | Use Decimal SI by default for unqualified kB, MB, GB, and TB labels. | MB to GB |
| Developer Tools | 12 | Preserve JSON number and string lexemes when formatting or minifying. | JSON Formatter |
| Electrical Converter | 6 | Calculate DC, single-phase AC, or balanced three-phase active power with the required inputs visible. | Watts to Kilowatts |
| Encoding Tools | 12 | Choose standard Base64 or base64url and keep the UTF-8 byte boundary visible. | Base64 Encode |
| Energy Converter | 4 | Use J and cal_th for technical small-calorie conversion. | kcal to kJ |
| Frequency Converter | 4 | 1 kHz = 1000 Hz. | Hz to kHz |
| Fuel Economy Converter | 2 | MPG on these pages means miles per US liquid gallon. | MPG to L/100km |
| Image Converter | 15 | JPG output flattens transparency onto the declared background. | PNG to JPG |
| Length Converter | 25 | Use SI powers of ten for millimetres, centimetres, metres, and kilometres. | CM to Inches |
| Number Systems Converter | 16 | Numeric base conversion does not round integers. | Binary to Decimal |
| Office Converter | 10 | Export selected Excel worksheets as CSV or structured JSON. | Excel to CSV |
| Online Calculators | 6 | Choose percent-of, part-of-whole, increase, or decrease without hiding the baseline. | Percentage Calculator |
| PDF Tools | 5 | Verify page count, order, dimensions, and rotation after every operation. | Merge PDF |
| Pressure Converter | 6 | Choose the target pressure unit separately from the pressure reference. | PSI to Bar |
| Speed Converter | 10 | mph uses the international statute mile. | MPH to KM/H |
| Temperature Converter | 8 | Choose Celsius or Fahrenheit for everyday readings and Kelvin when an absolute temperature scale is required. | Celsius to Fahrenheit |
| Text Tools | 6 | Word Counter splits non-empty trimmed text on runs of whitespace. | Word Counter |
| Time Converter | 15 | Keep elapsed-duration conversion separate from calendar arithmetic. | Seconds to Minutes |
| Volume Converter | 16 | Use L and mL for metric liquid capacity. | Liters to Gallons |
| Weight Converter | 18 | Use kg, g, mg, and tonne for SI mass. | KG to LBS |