Convert values between string, number, boolean, array, and object types with validation. Fix API type mismatches fast — local conversion, free, no signup.
Convert between tab-separated and comma-separated values with proper quoting. Move data between Unix tools and Excel cleanly — local conversion, free, no signup.
Convert numbers between binary, octal, decimal, and hex with bitwise views. Read 0xFF as 255 instantly — local math, free, no signup.
Converts JSON files to CSV format — APIs, configuration files, and data exchange between web services to spreadsheets, database exports, and data imports. All conversion happens locally in your browser with no file size limits.
Convert between hexadecimal bytes and ASCII text. Supports custom delimiters and real-time bidirectional conversion. Code never leaves your device — formatting and validation run locally in your browser.
Convert text between NATO phonetic, ASCII codes, binary, and Unicode representations. Spell callsigns and debug encodings — local conversion, free, no signup.
'42' becomes 42 with float/int detection; non-numeric strings error explicitly instead of NaN surprises. Empty strings stay empty, never zero.
'true'/'1' map true, everything else explicit — no JavaScript-style truthiness traps. Booleans convert predictably.
JSON-parse strings into structures, stringify structures back. Circular references report instead of hanging.
No — conversion runs locally in your browser. Data never leaves your device.
Column Renamer
Rename CSV headers in bulk with old:new mapping — standardize client exports fast. Fix 40 messy columns before import — local parsing, free, no signup.
CSV Format Validator
Validate CSV structure — flag rows with wrong column counts and empty cells before import. Catch bad rows locally — free, no signup.
Data Format Converter
Convert data between JSON, CSV, XML, YAML, and TSV with structure preserved. Migrate configs across stacks without rewriting — local PapaParse/xml2js/yaml parsing, free, no signup.
Bulk CSV/Excel to JSON
Turn messy client CSV and Excel sheets into clean JSON arrays or keyed objects with column mapping. Developers convert 50 exports without hand-editing — local SheetJS work, 2 free batches a day.
Last updated October 2026