Converters
Convert data between formats. — 14 tools available.
Converter tools transform structured data from one format to another without losing information. JSON-to-CSV conversion is essential when loading API data into spreadsheets or business intelligence tools. CSV-to-JSON conversion is the reverse — useful when you receive a data export and need to work with it programmatically. Timestamp converters bridge the gap between Unix epoch integers (used in databases and logs) and the human-readable date strings your users expect. Every conversion runs in your browser with no upload required.
14 Converters Tools
JSON to CSV Converter
Convert JSON arrays to CSV format with one click. Supports nested objects.
CSV to JSON Converter
Convert CSV files or pasted data to JSON arrays. Auto-detects headers and types.
Plain Text Converter
Convert HTML to plain text, strip Markdown syntax, or extract text from RTF with 3 conversion modes.
Roman Numeral Converter
Convert between numbers and Roman numerals (I, V, X, L, C, D, M) with validation and date formatting.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine in real time.
Morse Code Converter
Translate text to Morse code and decode Morse to English instantly.
KM to Miles Converter
Convert kilometers to miles and miles to km with a simple calculator.
MM to Inches Converter
Convert millimeters to inches and inches to mm with precision.
Number to Words Converter
Convert numbers to English words in cardinal, ordinal, or check-writing format up to quadrillions.
KG to LBS Converter
Convert kilograms to pounds and back instantly. See results in lbs, oz, and stones with a quick-reference table.
Cooking Converter
Convert between cooking measurements: oz to ml, cups to grams, teaspoons, tablespoons, pints, and liters. Includes ingredient density selector for accurate cup-to-gram conversion.
Speed Converter
Convert between speed units: knots, mph, km/h, meters per second, and feet per second. Includes Beaufort wind scale reference and common speed benchmarks.
Area Converter
Convert between area units: square feet, square meters, acres, hectares, square yards, square miles, and square kilometers. Includes real estate size reference table.
Liquid Volume Converter
Convert between liquid volume units: US/UK gallons, liters, fluid ounces, cups, pints, and quarts. Clearly distinguishes between US and Imperial measurements.
Frequently Asked Questions
Does converting between formats lose any data?
It depends on the formats involved. JSON-to-CSV conversion can flatten nested objects, which may lose structural hierarchy. CSV-to-JSON conversion preserves all tabular data faithfully. Timestamp conversions are lossless — Unix timestamps and ISO 8601 dates represent the same point in time. Always check the output to confirm the conversion preserved the data you need.
What is the difference between JSON and CSV?
JSON (JavaScript Object Notation) is a hierarchical format that supports nested objects, arrays, and typed values (strings, numbers, booleans, null). CSV (Comma-Separated Values) is a flat tabular format where each row has the same columns. JSON is preferred for APIs and complex data; CSV is preferred for spreadsheets, data analysis, and database imports.
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC (the Unix epoch). It is the standard way to represent time in databases, log files, APIs, and programming languages. Unix timestamps are timezone-independent — the same integer represents the same instant worldwide.