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Regex Tester Lorem Ipsum Generator Markdown Preview HTML Entity Encoder / Decoder Diff Checker String Case Converter Text Counter Slug Generator Text Sorter String Escaper Text Reverser Whitespace Cleaner Number to Words Morse Code Translator Regex Pattern Library Markdown Reference Hex Editor Base Converter Byte Calculator Emoji Picker

JSON Formatter & Validator JSON ↔ YAML Converter JSON ↔ CSV Converter JSON ↔ XML Converter CSV Viewer XML Formatter JSONPath Evaluator JSON Schema Validator JSON to TypeScript Types YAML Reference JSON Diff / Patch

Hash Generator JWT Decoder Password Generator Password Strength Checker HMAC Generator AES Cipher TOTP / 2FA Generator CSP Header Builder SSL Certificate Decoder JWT Generator CORS Policy Tester OAuth 2.0 Flow Debugger IBAN Validator SSH Key Generator Self-Signed Certificate DKIM Key Generator OWASP Security Headers SRI Hash Generator PGP Key Viewer RSA Cipher ChaCha20-Poly1305 Digital Signatures File Encryptor PGP Cipher ECDH Key Exchange Key Derivation Triple DES (3DES)Blowfish Cipher Envelope Encryption Steganography

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chmod Calculator Git Command Reference Docker Command Reference PowerShell Reference Bash Reference Exit Code Reference Linux Signal Reference Environment Variable Reference kubectl Command Reference .gitignore Reference Terraform Reference GitHub Actions Reference Helm Chart Reference Dockerfile Reference Docker Compose Reference systemd Reference Makefile Reference CI Environment Variables

Base64 Encoder / Decoder Number Base Converter ASCII / Unicode Table ROT13 / Caesar Cipher Punycode Encoder / Decoder Unicode Explorer Caesar & VigenÃ¨re Cipher XOR Cipher One-Time Pad Enigma Machine

ARIA Role Reference TZ Abbreviation Reference TypeScript Reference CSS Selectors Reference React Hooks Reference Python Built-ins Reference C# Reference REST API Reference HTML Elements Reference Regex Syntax Reference

Date Calculator

v1.0.0

Add or subtract days/weeks/months/years from a date, or find the difference between two dates.

Start Date

Amount

Unit

Result

2026-04-07

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