100+ Free Online Converter & Cipher Tools
A collection of 104+ free encoding, decoding, and conversion tools — letters to numbers, A1Z26, ASCII, hex, binary, cipher decoders, and more. No signup required.
Letters to Numbers Converter
Convert letters to numbers using A1Z26 cipher
A0Z25 Cipher Translator
Convert text using A0Z25 cipher encoding
Anagram Solver
Solve anagrams and find word combinations
Atbash Cipher Decoder
Mirror alphabet substitution cipher decoder
Alphanumeric Conversion Tool
Convert letters to numbers and numbers to letters with multiple encoding formats
Audio Spectrogram Analyzer
Visualize audio frequencies and analyze sound waves
Babylonian Numeral Converter
Convert to ancient Babylonian base-60 numerals
Blossom Solver
Solve Merriam-Webster Blossom word game
Book Cipher Decoder
Decode hidden messages from books
Camel Case Converter
Convert text to camelCase, PascalCase, and other formats
Cipher Identifier
Identify and analyze cipher types from encrypted text
Cistercian Numerals Converter
Convert to Cistercian numeral notation
Cryptogram Generator
Create and share puzzle cryptograms
Cryptogram Solver
Solve complex cryptogram puzzles
Convert OGG to WAV
Convert OGG audio files to WAV format instantly with quality preservation - free and secure.
Convert OXPS to PDF
Convert OXPS files to PDF format instantly. Preserves formatting, free and works in browser.
Decimal to Hexadecimal Converter
Convert between decimal, hex, binary, and octal
Egyptian Numbers Converter
Convert to ancient Egyptian hieroglyphic numerals
Enigma Machine Emulator
Simulate the historical Enigma cipher device
Escape Room Builder
Create and design interactive escape room puzzles
Fill In The Blanks Equation Solver
Find missing digits and operators in equations
Grade Curve Calculator
Adjust student grades using normal, linear, or percentile distribution methods
Half Birthday Calculator
Calculate when your half birthday is and celebrate twice a year
HTML Encoder and Decoder
Instantly encode and decode HTML entities for safe web content
Hexahue Cipher
Color-based encoding system for visual communication
JSON to Java Code Generator
Generate Java code from JSON structure
JSON to INI Converter
Convert JSON configuration files to INI format instantly
Phone Number Converter
Convert letters to phone number digits using T9
Line Ending Converter
Convert between LF, CRLF, and CR line endings
Longest Word Using These Letters Solver
Find the longest words from available letters
Mayan Numeral Converter
Convert to ancient Mayan numerals
Grayscale Image Online
Convert colored images to black and white grayscale instantly
mEq to mg Calculator
Convert milliequivalents (mEq) to milligrams (mg) for pharmaceutical and medical calculations
Medicare Prefix Converter
Decode Medicare ID prefix letters and identify beneficiary types and coverage eligibility
MBI Converter
Convert Medicare Beneficiary Identifier numbers and names to telephone keypad sequences
Monoalphabetic Substitution Cipher
Encrypt and decrypt using monoalphabetic ciphers
NATO Phonetic Alphabet Translator
Convert text to NATO phonetic alphabet spelling
Online URL Decoder Encoder
Instantly encode and decode URLs with support for recursive decoding and batch processing
Password Strength Tester
Test and analyze password security strength
Playback Speed Calculator
Calculate adjusted duration and time saved when playing media at different speeds
Playfair Cipher Solver
Encrypt and decrypt using Playfair cipher
PX To VW Converter
Convert between pixels and viewport width units
Skip Cipher
Encode text using skip cipher technique
Scan Words From Image
Extract text from images using advanced OCR technology
Steganography Image Decoder
Extract hidden information and messages from steganographic images using LSB extraction
Tapcode Translator
Convert messages to tap code cipher
TXT to INI Converter
Convert plain text files to INI configuration format instantly
INI To XML Converter
Convert INI configuration files to well-formed XML instantly
XML To INI Converter
Convert XML configuration files to INI format instantly
URL Percent Encoding and Decoding
Instantly encode and decode URLs with percent encoding support
YAML to INI Converter
Convert between YAML and INI configuration formats
YAML to JPG Converter
Convert YAML configuration files to JPG images for easy sharing
YAML to XML Converter
Convert YAML configuration files to XML format instantly
CMYK to Pantone Color Converter
Convert CMYK colors to Pantone (PMS) format instantly
Batch File Editor
Edit, create, and analyze batch files with real-time statistics
RGB To Pantone Color Converter
Convert RGB colors to Pantone (PMS) format instantly
Reverse Text Converter
Reverse any text, string, or message instantly
Pantone to Hex Converter
Search Pantone colors and convert to hex format
Base64 Image Viewer
Decode and view base64-encoded images instantly
Baconian Cipher
Encode and decode text using the Baconian Cipher with A/B patterns
Black and White Photo to Color Converter
Transform grayscale photos into vibrant color images instantly
Morse Code to Base64 Converter
Decode Morse code and convert to Base64 format
Vernam Cipher Decoder
Decrypt Vernam cipher (one-time pad) ciphertext using the original key
IVR Alphanumeric Conversion Tool
Convert Medicare IDs, PTAN, and DCN to IVR telephone keypad sequences
CM To Pixels Converter
Convert centimeters to pixels for web design, print media, and screen calculations
Placeholder Image Creator
Generate custom placeholder images with text, colors, and download options
Text Frequency Analysis
Analyze character and word frequency in text with detailed statistics
PPT Compressor
Compress PowerPoint presentations instantly. Reduce .ppt and .pptx file sizes without losing quality.
WEBM Compressor
Compress WebM video files with advanced quality controls. Reduce file size without quality loss - all processing in your browser.
WebP to GIF
Convert WebP images to GIF format instantly with quality preservation - free and works in browser.
XPS File To PDF
Convert XPS documents to PDF format instantly. Preserves formatting and supports all file sizes - completely free.
Online Random String Generator
Generate unlimited random strings with customizable characters, length, and formatting. Perfect for passwords, API keys, and testing.
Base32 Converter
Encode or decode Base32 instantly. Supports RFC 4648, Base32 Hex, z-base-32, and Crockford's Base32.
Text to Roman Numerals
Convert text or numbers to Roman numerals instantly. Supports ASCII-to-Roman, number-to-Roman, reverse decoding, and custom separators.
Sims Language Translator
Translate English to Simlish or decode Simlish to English. 200+ confirmed Simlish words, random sentence generator, and phrase chips.
Sentence Unscrambler
Instantly rearrange scrambled words into a correct, readable sentence. Free, browser-based, with character and word stats.
PDF to Word Converter
Convert PDF files to editable Word (.docx) documents instantly in your browser. No uploads, no software required.
Word to PDF Converter
Convert Word documents (.docx, .doc) to PDF instantly in your browser. No uploads, no software required.
Morse Code Translator
Translate text to Morse code and decode Morse code to text instantly, with audio playback and a full reference chart.
Pie Graph Maker
Create beautiful interactive pie charts online with customizable colors, labels, and styles. Download as PNG instantly.
TCG Proxy Creator
Create professional trading card game proxy sheets online. Support for Yu-Gi-Oh!, Pokémon, MTG with custom spacing and print quality.
ID3 Metadata Viewer
Inspect ID3 tags in MP3, MP4/M4A, AIFF, WAV, OGG, and FLAC files. View title, artist, album, cover art, BPM, and more — all in your browser.
Exif Metadata Viewer
View all EXIF metadata in JPEG, TIFF, and WebP images — camera, GPS, date, focal length, ISO, and more. No uploads. Your data stays local.
Certificate Decoder
Decode SSL/TLS certificates, CSRs, and private keys instantly in your browser. Supports PEM, DER, Base64, and hex formats. Your data stays local.
Get Song BPM
Detect the BPM of any audio file instantly in your browser. Upload MP3, WAV, FLAC, or M4A and get an accurate tempo reading with confidence score. No uploads.
Tempo Tapper
Tap the button or press Space in time with any song to instantly calculate BPM. Shows rolling average, interval history, half-time, double-time, and tempo feel.
LUFS Meter
Measure integrated loudness, momentary peak, short-term peak, true peak (dBTP), and loudness range (LRA) of any audio file using ITU-R BS.1770-4. Compare against streaming platform targets.
ROT13 Decoder & Encoder
Instantly decode or encode any text with ROT13 — the self-inverse cipher used for Reddit spoilers, Usenet posts, and puzzle hints. No sign-up. Works in your browser.
Caesar Cipher Decoder & Encoder
Decode or encode any Caesar cipher with a shift slider (1–25) and instant brute-force mode that shows all 25 shifts ranked by English likelihood.
SAML Encoder and Decoder
Encode XML to SAMLRequest or SAMLResponse format, or decode either parameter back to readable XML. Handles deflate and Base64 automatically.
ASCII Decoder and Encoder
Decode ASCII codes (decimal, hex, binary, octal) to readable text, or encode text back to ASCII codes. Includes a clickable ASCII reference table.
Base64 Encoder and Decoder
Encode text to Base64 or decode Base64 back to readable text. Supports standard and URL-safe Base64, full UTF-8 including emoji.
Gradient Palette Generator
Generate beautiful 4-color gradient palettes and export CSS. Pick color stops, choose linear/radial/conic type, preview swatches, and copy the gradient CSS in one click.
Gradient Maker from Image
Upload any photo and extract its dominant colors into a CSS gradient. Uses k-means clustering on pixel data to generate a smooth gradient and palette you can copy in one click.
Hackathon Team Name Generator
Generate creative hackathon team names instantly. Choose from tech, space, nature, mythology, animal, and pun themes.
Bubble Text Generator
Convert any text into bubble letters — circled outline, black filled, keycap, squared, fullwidth, and double struck. Copy for Instagram, Twitter, Discord, and TikTok.
AI Slop Checker
Detect whether text or images were generated by AI. Get a confidence score, detected patterns, readability scores, and strip hidden AI fingerprints from any content.
AI Paragraph Expander
Expand any paragraph into a longer, richer version. Choose your tone, expansion style, and target length (2×, 3×, or 4×). Free AI writing tool.
AI Uncrop Image
Expand any photo beyond its original borders using AI outpainting. Choose how much to extend each edge, add an optional prompt, and download the seamlessly extended result.
PDF to Grayscale Converter
Convert any PDF to grayscale online for free. All pages converted using the luminosity formula and bundled into a downloadable grayscale PDF. Runs entirely in your browser — no upload.
Discriminant Formula Calculator
Calculate the discriminant (b² − 4ac) of any quadratic equation. Enter a, b, c to get the discriminant value, nature of roots, step-by-step working, and exact or decimal roots.
Structural Formula Calculator
Visualize 2D structural formulas of any molecule. Choose from 40+ molecules or enter SMILES notation. Shows bonds, functional groups, molecular weight, and atom counts.
Run On Sentence Checker
Instantly detect comma splices and run-on sentences in your text. Get clear explanations and numbered fix suggestions for every issue.
Virality Checker
Score your content's viral potential across hook strength, emotional power, shareability, trending potential, and engagement. Free instant analysis.