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Text & Data
Currency & Crypto
Converters
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Number Bases
Colors
Case Styles
Timestamps
Text Encoding
Hash Generators
Dev Tools
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4Dev
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4Dev Toolbox
Every free tool on 4Dev, grouped by category. 69 tools and counting.
Data Format Conversions & Validators
JSON to CSV
CSV to JSON
JSON to XML
XML to JSON
JSON to YAML
YAML to JSON
CSV to XLSX
JSON to XLSX
CSV to XML
XML to CSV
JSON to SQL
SQL to JSON
YAML to CSV
JWT to JSON
MARKDOWN to HTML
JSON to PDF
CSV to PDF
JSON to DOCX
ENV to JSON
BASE64 to JSON
JSON Formatter & Beautifier
JSON Validator
JSON Minifier
XML Formatter & Beautifier
XML Validator
XML Minifier
CSV Validator
YAML Validator
TOML Validator
SQL Formatter
Number Base Converters
Number Base Converter
(any base 2-60)
Decimal to Binary
Binary to Decimal
Decimal to Hex
Hex to Decimal
Decimal to Octal
Binary to Hex
Decimal to Base36
Decimal to Sexagesimal
Color Converters
Color Converter
(HEX, RGB, HSL, HSV, CMYK at once)
Red
Green
Blue
Black
Case Converters
Case Converter
(17 formats)
camelCase to snake_case
snake_case to camelCase
camelCase to kebab-case
camelCase to PascalCase
Timestamp Converters
Timestamp Converter
(33 formats)
Unix to ISO 8601
ISO 8601 to Unix
Unix to Human-Readable
Unix to SQL DateTime
Text Encoders/Decoders
Text Encoding Converter
(any format)
Text to Base64
Base64 to Text
Text to UTF-8
Text to ANSI
Text to Hex
Text to URL Encode
Text to Morse Code
Text to ROT13
Hash Generators
Hash Generator
(17 algorithms)
MD5 Hash Generator
SHA-1 Hash Generator
SHA-256 Hash Generator
SHA-512 Hash Generator
Currency & Crypto Converters
Currency & Crypto Converter
(any pair, searchable)
USD to EUR
USD to ILS
BTC to USD
ETH to USD
Developer Workflow Tools
Cron Expression Explainer
cURL to Code Converter
JSON to TypeScript Converter
Text Diff Checker
QR Code Generator
UUID Generator
Password Generator
Slug Generator
Chmod / Unix Permission Calculator
Regex Tester
Lorem Ipsum Generator
URL Parser
Word & Character Counter
HTTP Status Code Lookup
Email Validator
Credit Card Number Validator
IPv4 Subnet Calculator
User-Agent Parser
Password Strength Checker
Random String Generator
.gitignore Generator
CSS Unit Converter
Time Zone Converter
HTML Tag Stripper
Whitespace & Line Trimmer
Line Sorter & Deduplicator
CSV to Markdown Table
Markdown Table Generator
Open Graph Tag Generator
Meta Tag Generator
CSS Gradient Generator
Box Shadow Generator
Border Radius Generator
Markdown Previewer
Robots.txt Generator
Image to Base64 Converter
Random Number Generator
Color Contrast Checker
HTML Boilerplate Generator
Legal & Policies
Terms of Use
Privacy Policy
Cookie Policy
General Disclaimer
Financial and Currency Disclaimer
Data Sources and Methodology
Accessibility Statement
Copyright and Intellectual Property Policy
Third-Party Services and Advertising Disclosure
Contact and Error Reporting Policy