Math & Numbers
Convert Fahrenheit to Celsius with configurable decimal precision
fahrenheit-to-celsiusData Processing
Query JSON with JSONPath or JMESPath-style expressions, inspect matched paths, and highlight extracted values in the original document
json-path-extractorMedia
Turn an SVG or raster logo into a complete favicon pack with ICO, PNG variants, Apple touch icon, and web manifest
svg-favicon-generatorMath & Numbers
Convert feet to meters with configurable decimal precision
feet-to-meterMath & Numbers
Convert miles to kilometers with configurable decimal precision
miles-to-kmMath & Numbers
Convert inches to centimeters with configurable decimal precision
inches-to-cmMath & Numbers
Convert meters to feet with configurable decimal precision
meter-to-feetDevelopment
Convert OpenAPI or Swagger JSON/YAML specs into TypeScript API types, request payloads, and response models with configurable output and naming styles
openapi-to-typescript-generatorText Processing
Generate formatted Markdown tables from CSV, JSON, or array data with alignment, header styles, width control, and merge hints
markdown-table-generatorMath & Numbers
Estimate required sample size for proportions or means using confidence level, margin of error, and optional finite population correction
sample-size-calculatorMath & Numbers
Calculate z-scores, cumulative probability, tail probability, and interval probability for a normal distribution
normal-distribution-calculatorMath & Numbers
Run one-sample or two-sample t-tests from raw data and inspect t statistics, degrees of freedom, and p-values
t-test-calculator