Tools by Remus Dutulescu
Hangman Game - Classic Word Guessing Challenge
Play the classic Hangman word guessing game online with multiple difficulty levels and word categories. Challenge yourself to guess words letter by letter before the hangman is complete.
IP Address Converter – Convert Between IPv4, Binary, Decimal, and Hex
Free online tool to convert IP addresses between different formats including IPv4, IPv6, binary, decimal, and hexadecimal with detailed step-by-step explanations
Battery Life Calculator – Estimate Device Runtime Based on Capacity and Power
Calculate how long your device will run on battery power by analyzing capacity, voltage, and current draw with detailed step-by-step explanations and device presets
PCB Trace Width Calculator – Design Electronics Circuit Boards Safely
Calculate optimal PCB trace width for electronic circuit boards based on current, temperature rise, and copper thickness using IPC-2221, IPC-2152, or Brooks equation standards
Ohm's Law Calculator
Calculate voltage, current, resistance, and power with this interactive Ohm's Law calculator. Perfect for electrical engineering, electronics projects, and physics education.
Lottery Number Generator
Generate random lottery numbers for various lottery games including Powerball, Mega Millions, EuroMillions, and more. Customize number ranges, set count, and adjust settings for your perfect lottery pick.
Geometric Sequence Calculator – Find Terms, Nth Term & Sum
Calculate any term, generate series, or find the sum of a geometric sequence with first term and common ratio. Interactive calculator with step-by-step explanations and multiple notation formats.
Water Intake Calculator - Daily Hydration Needs Based on Weight, Activity & Climate
Calculate your personalized daily water intake requirements in milliliters, ounces, and cups based on your weight, age, gender, activity level, and climate conditions
Proportion Calculator – Solve Ratio Problems with Step-by-Step Solutions
Free online proportion calculator that solves A/B = C/D equations for any missing value with detailed step-by-step explanations and cross-multiplication formulas
Random String Generator – Create Secure Passwords & Tokens
Generate random alphanumeric strings, secure passwords, hex values, binary sequences and more with customizable length and character sets for development and security purposes
Scale Converter – Convert Map, Model, and Drawing Scales
Easily convert measurements between map, model, and drawing scales. Calculate real-world dimensions from scaled measurements with precise unit conversion.
Keyword Density Checker – Optimize SEO Content with Perfect Keyword Balance
Analyze your content's keyword density to ensure optimal SEO performance. Count keywords, measure their frequency, and avoid over-optimization with this free online tool.
Time Unit Converter – Convert Between Seconds, Minutes, Hours and More
Easily convert between time units including milliseconds, seconds, minutes, hours, days, weeks, months, and years with step-by-step explanations and formulas
Productivity Timer – Pomodoro, Countdown & Stopwatch for Focus and Efficiency
Boost your productivity with customizable timers including Pomodoro technique, countdown, and stopwatch. Track work sessions, breaks, and stay focused on your tasks.
Prime Number Checker – Check if a Number is Prime with Explanation
Quickly verify if a number is prime or composite with step-by-step explanations and factorization for non-prime numbers. Simple, fast, and educational.
Depth of Field Calculator – Photography Tool for Perfect Focus
Calculate depth of field, hyperfocal distance, and focus range for your camera setup with this easy-to-use photography tool. Perfect for photographers of all skill levels.
Random Number Sequence Generator – Create Random, Unique, and Sorted Number Lists
Generate customizable sequences of random numbers with options for unique values, sorting, decimal precision, and different separators for data analysis, testing, or simulations
VAT Calculator – Calculate Tax Inclusive and Exclusive Amounts
Free online VAT calculator tool that lets you calculate VAT inclusive or exclusive amounts, VAT amounts, and gross totals with support for multiple currencies and tax rates worldwide.
MD5 Hash Generator – Calculate MD5 Checksums for Text and Files
Generate MD5 hash values from text or files. Supports UTF-8 encoding and custom output formats. Perfect for verifying file integrity, checksums, and password storage.
MP3 to AAC Converter - High-Quality Audio Format Conversion Tool
Free online tool to convert MP3 files to AAC format with adjustable quality and bitrate settings. No software installation required, convert right in your browser.
Credit Card Validator – Verify Card Numbers with Luhn Algorithm
Instantly check if a credit card number is valid using industry-standard validation techniques. Identifies card type and verifies format, length, and checksum with complete privacy.
Domain Age Checker – Find How Old Any Website Is
Free domain age lookup tool that finds how long a website has existed. Discover domain creation date, registration details, and nameservers for any domain.
Body Fat Percentage Calculator – Estimate Body Composition with Navy Method
Calculate your body fat percentage, lean mass, and fat mass accurately using the Navy Method or BMI formula with this easy-to-use calculator. Get detailed explanations and category assessments.
Week Number Calculator – ISO & US Week System Converter
Calculate ISO or US week numbers for any date. View day of year, year progress, and days remaining in the year with this comprehensive week number tool.
Sphere Volume Calculator – Calculate Volume, Surface Area & Conversions
Calculate the volume and surface area of a sphere with this easy-to-use tool. Set radius or diameter, select units, and get instant volume conversions with 3D visualization.
Power Unit Converter – Convert Between Watts, Kilowatts, Horsepower, and More
Convert between different power units including Watts, Kilowatts, Horsepower, BTU/hour, and more with detailed conversion formulas and explanations
Website Down Checker – Check if a Website is Up or Down
Check if a website is up or down instantly with detailed status information including response time, status code, and error messages
MX Record Lookup – Check Email Server Records for Any Domain
Free online tool to lookup and verify MX (Mail Exchange) records for any domain. Find email server configurations, priorities, and troubleshoot email delivery issues.
Data Storage Converter – Convert Between KB, MB, GB, and Binary Units
Easily convert between decimal (KB, MB, GB) and binary (KiB, MiB, GiB) storage units with precision control and step-by-step explanations of differences between numeral systems
Sitemap Generator – Create XML & Text Sitemaps for SEO
Generate XML and TXT sitemaps for your website with custom URLs, priorities, and change frequencies to improve your site's SEO and search engine indexing
Dog Age Calculator – Convert Your Dog's Age to Human Years
Calculate how old your dog is in human years with this scientifically accurate calculator that accounts for breed size. Different sized dogs age at different rates.
Area Converter – Convert Between Square Meters, Acres, Square Feet and More
Easily convert between various area units including square meters, square feet, acres, hectares, and more with detailed conversion formulas and explanations
JWT Decoder & Validator – Parse and Validate JSON Web Tokens
Easily decode JWT tokens to view header, payload, and signature information. Perfect for developers working with authentication and authorization.
Text to Binary Converter – Convert Text to Binary Code and Vice Versa
Free online tool to convert text to binary code and binary code back to text. Easily transform any text into its binary representation with optional spacing between bytes.
Cat Age Calculator – Convert Cat Years to Human Years
Free online calculator to convert your cat's age to human years equivalent using a scientific approach beyond the simple '7 years' rule. Understand your cat's life stage.
Temperature Converter – Convert Between Celsius, Fahrenheit, and Kelvin
Easily convert temperatures between Celsius, Fahrenheit, and Kelvin with instant results and detailed conversion formulas
Pregnancy Weight Gain Calculator – Track Your Healthy Weight During Pregnancy
Calculate and track healthy weight gain during pregnancy based on your BMI, week of pregnancy, and whether you're carrying multiples, with personalized recommendations and guidance.
Liters to Gallons Converter – Convert Between Liters, Milliliters, US and UK Gallons
Easily convert between different volume units including liters, milliliters, US gallons, and UK gallons with precise calculations and scientific formulas
YouTube Thumbnail Downloader – Download High-Quality Video Thumbnails
Free YouTube thumbnail downloader that lets you easily extract and download thumbnails from any YouTube video in multiple resolutions (1080p, 480p, 320p, and more)
Permutation Calculator – Calculate nPr, nCr with Step-by-Step Solutions
Calculate permutations, combinations, and variations with and without repetition. Includes step-by-step explanations, formulas, and visualizations.
Yes or No Generator – Make Decisions with Magic 8-Ball, Coin Flip & Dice
Need help making a decision? Our Yes or No Generator offers multiple ways to get an answer: simple Yes/No, Magic 8-Ball, Coin Flip, or Dice Roll. Get your answer instantly!
Cylinder Volume Calculator – Calculate Volume and Surface Area of Cylinders
Free online cylinder volume calculator with 3D visualization. Calculate volume, surface area, and convert between different units of measurement for any cylinder.
Aspect Ratio Calculator – Calculate Dimensions for Photos, Videos, and Screens
A free tool to calculate width, height, or both dimensions while maintaining aspect ratios like 16:9, 4:3, and more – perfect for photos, videos, and responsive design.
Markup Calculator – Calculate Profit Margin, Markup, and Selling Price
Free online calculator for business pricing strategies. Calculate markup, margin, cost, selling price and profit with flexible currency options.
Random Letter Generator – Generate Random Letters Online
Create random letters with customizable settings including character sets, symbols, numbers, and output format. Perfect for passwords, codes, and random text generation.
Age Difference Calculator – Compare Birthdays and Find Exact Age Gaps
Calculate the precise difference between two birthdates in years, months, and days. Perfect for finding age gaps, planning events, and determining exact ages.
Pig Latin Translator – Convert English to Pig Latin and Back
Free online tool that translates English text to Pig Latin and decodes Pig Latin back to English with accurate conversion rules and step-by-step examples
Robots.txt Generator – Create Perfect Search Engine Instructions
Generate a customized robots.txt file for your website to control web crawler access with settings for different search engines, restricted directories, and crawl delay options
YouTube Username Checker – Check If a YouTube Username Is Available
Check if a YouTube username is available before creating your channel. Verify username format requirements and get instant availability results.
YouTube Playlist Generator – Easily Create Playlists from Multiple Videos
Create YouTube playlists from multiple video URLs with a single click. Instantly generate shareable playlist links without needing a YouTube account.
YouTube Money Calculator – Estimate Revenue and Brand Deal Pricing
Calculate potential earnings from your YouTube channel, including ad revenue and brand deal prices based on subscribers, views, and other metrics
YouTube Title & Description Extractor – Extract Video Metadata
Extract title, description, channel name, publish date, and thumbnails from any YouTube video with a simple URL. Get complete video information with just one click.
Salary Converter – Convert Between Hourly, Daily, Weekly, Monthly, and Annual Salaries
Free online tool to convert salary between different pay periods with tax calculation and customizable work schedules. Perfect for job offers, freelance rates, and budgeting.
YouTube Disclaimer Generator – Create Professional Video Disclaimers
Generate customized, professional disclaimers for YouTube videos including affiliate, sponsorship, medical, financial, and educational content with timestamp and contact options
YouTube Dislike Viewer – See Hidden Dislike Counts on YouTube Videos
Easily view and analyze hidden dislike counts, like ratios, and engagement metrics for any YouTube video to make informed decisions about content quality
Text Encrypter & Decrypter – Secure Message Encryption Tool
Encrypt and decrypt text messages with multiple algorithms including AES, DES, Triple DES, Rabbit, and RC4 encryption using secure passphrases and optional obfuscation
Joules to Calories Converter – Convert Between Energy Units
Easily convert energy values between joules (J), kilojoules (kJ), calories (cal), and kilocalories (kcal) with precision calculations and scientific explanations for nutrition, physics, and engineering applications
PSI to BAR Converter – Convert Between Pressure Units
Easily convert pressure values between PSI (pounds per square inch) and BAR with precise calculations, conversion tables, and detailed explanations for engineering and industrial applications
Frequency Unit Converter – Convert Between Hz, kHz, MHz, and GHz
Easily convert frequency values between different units including hertz (Hz), kilohertz (kHz), megahertz (MHz), and gigahertz (GHz) with step-by-step conversion formulas
Meditation Timer – Customize Your Meditation Sessions with Intervals and Bell Sounds
A versatile meditation timer with customizable sessions, interval tracking, and soothing bell sounds to enhance your mindfulness practice
Number Base Converter – Convert Between Binary, Decimal, Hex, and More
Easily convert numbers between different numeral systems including binary, decimal, hexadecimal, octal, and other bases with step-by-step explanations
UNIX Timestamp Converter – Convert Timestamp to Date & Date to Timestamp
Quickly convert UNIX timestamps to human-readable dates and vice versa with this easy-to-use online tool
JSON Escaper & Unescaper – Escape Characters for String Literals
Easily escape and unescape JSON strings to safely use them as string literals in JavaScript, Java, Python, and other programming languages with options for formatting, Unicode escaping, and more
XML Beautifier & Formatter
Format and beautify XML with customizable indentation, sorting, and validation. Perfect for developers working with XML documents.
PDF to Word Converter: Convert PDF to Word Online
Free online PDF to Word converter. Convert PDF files to editable Word documents (DOCX/DOC) while preserving formatting, images, and tables.
UUID Validator: Check and Analyze UUID Format
Validate and analyze UUIDs with support for all versions (v1, v3, v4, v5). Verify format, version, and get detailed breakdown of UUID components.
Histogram Maker: Create Statistical Histograms Online
Create and analyze histograms with our free online tool. Features include customizable bins, mean/median lines, distribution curves, and multiple chart types.
Color Converter: Convert Colors Between Different Formats
Free online color converter tool. Convert colors between HEX, RGB, HSL, and CMYK formats. Includes a visual color picker and real-time preview.
Glitch Text Generator: Create Zalgo and Corrupted Text Effortlessly
Transform your ordinary text into eye-catching Zalgo text and corrupted text with our glitch text generator. Easily create unique and captivating text styles for social media, designs, and more.
Word Counter & Text Analyzer: Count Words, Characters & More Online
Use our free online word counter and text analysis tool to measure character count, word count, and more. The best tool for sentence counting, checking word length easily, and performing word analysis online free. Ideal for resumes, essays, and social media posts.
Caesar Cipher: Online Encoder and Decoder Tool
Use our free online Caesar cipher tool to encode and decode text using the classic shift cipher method. Perfect for cryptography learning and creating simple encoded messages.
FOV Calculator: Field of View Calculator for Sim Racing
Use our free FOV calculator to find the perfect field of view settings for your sim racing setup. Supports single and triple screen configurations for all major racing games.
Regex Builder: Best Regex Tool & Free Regex Generator
Use our free regex builder to generate regular expressions effortlessly. Test regular expressions online with our interactive regex tester.
Split Bill Calculator: Best Split Bill Tool to Share Expenses Fairly
Use our free Split Bill Calculator to accurately share expenses among friends, family, or colleagues. Handles tax, tip, and custom items for each person, making bill splitting effortless and fair.
Text to Braille Translator: Translate to Braille Online Free
Easily convert text to Braille online. Supports multiple standards including UEB, EBAE, and international formats. Perfect for accessibility, education, and ensuring inclusive communication.
URL Encoder & Decoder: Encode URLs, Decode HTML Entities, and More
Use our free URL encoder and decoder to handle special characters, HTML entities, and percent encoding. Batch process multiple URLs, analyze components, and ensure web compatibility.
Resistor Calculator: Series and Parallel Resistance Calculator
Free online calculator for series and parallel resistor combinations. Calculate total resistance, convert units, and analyze electrical circuits easily.
Lyric Generator: Effortlessly Write Song Lyrics with Our Songwriting Tool
Create unique song lyrics instantly with our Lyric Generator. Choose your genre, theme, and mood to write song lyrics that resonate. Ideal for artists, songwriters, and music enthusiasts.
Morse Code Translator: Translate Morse Code Online for Free
Use our free online Morse code translator to encode and decode Morse code effortlessly. Convert text to Morse code and vice versa. Supports special characters and punctuation.
Number to Words Converter: Convert Numbers to Words Online
Use our free online number to words converter to easily convert numbers to words. Perfect for financial documents, legal papers, and educational purposes.
Reverse Text Generator
Easily reverse, mirror, or flip your text upside down with our versatile tool. Transform your text with Full Reverse, Mirror Text, or Flip Text modes.
Syllable Counter: Count Syllables in Words and Text
Count syllables accurately in words and text with detailed breakdowns. Perfect for poetry, linguistics, and educational purposes.
Sudoku Solver: Solve Sudoku Puzzles Instantly with a Sudoku Helper
Use our free Sudoku solver to solve Sudoku puzzles quickly and accurately. View step-by-step logic, generate new puzzles, and improve your solving skills.
Pixel Density Calculator: Calculate PPI, Screen Resolution & More
Free pixel density calculator to compute PPI (pixels per inch), optimal viewing distance, and screen metrics. Perfect for choosing displays and understanding screen specifications.
Random Date Generator: Pick Random Dates Online
Use our free random date generator to effortlessly pick random dates within a specified range. Perfect for testing, data analysis, and planning purposes.
Voltage Divider Calculator: Design & Analyze Voltage Divider Circuits
Free voltage divider calculator to compute output voltage, current, and power dissipation. Perfect for electronics design, circuit analysis, and component selection.
UUID Generator: Generate UUIDs & GUIDs for Unique Identifiers
Generate UUIDs (v1, v3, v4, v5) effortlessly. Supports customizable formats, batch generation, and special options like prefixes, suffixes, and case transformations. Perfect for developers, database applications, and ensuring globally unique IDs.
JSON to CSV Converter
Convert JSON data to CSV format with customizable options for handling nested objects, arrays, and formatting.
Factorial Calculator: Calculate Factorials Online
Free online factorial calculator to calculate factorial of any number. Features step-by-step calculation, scientific notation for large numbers, and instant results.
Golden Ratio Calculator: Design with Perfect Proportions
Free golden ratio calculator to find perfectly proportioned dimensions using the divine proportion (φ). Ideal for designers, architects, and artists seeking harmonious compositions.