Whiz.tools - Simple Online Tools
Collection of simple and useful online tools for all domains
Conversion Tools
Avogadro's Number: Mole to Molecule Conversion Calculator
Convert between moles and molecules using Avogadro's number. Calculate the number of molecules in a given number of moles, essential for chemistry, stoichiometry, and understanding molecular quantities.
Base64 Encoder and Decoder: Convert Text to/from Base64
Free online tool to encode text to Base64 or decode Base64 strings back to text. Supports standard and URL-safe Base64 encoding with instant conversion.
Base64 Image Decoder and Viewer | Convert Base64 to Images
Decode and preview base64-encoded image strings instantly. Supports JPEG, PNG, GIF and other common formats with error handling for invalid inputs.
Comprehensive Bit and Byte Length Calculator Tool
Calculate the bit and byte lengths of integers, big integers, hex strings, and regular strings with various encodings. Essential for understanding data representation, storage, and transmission in computer systems.
Easily Convert Pounds to Kilograms with Our Tool
Enter a weight in pounds to convert it to kilograms.
Number Base Converter: Binary, Decimal, Hex & Custom Bases
Convert numbers between different numerical bases (2-36). Easily transform binary, decimal, hexadecimal, octal, and custom base numbers with instant results.
Shoe Size Converter: US, UK, EU & JP Sizing Systems
Convert shoe sizes between US, UK, EU, and JP systems for men, women, and children with our easy-to-use calculator and comprehensive reference charts.
Date Time Calculators
Advanced Calendar Calculator for Date Arithmetic and Planning
Add or subtract time from a date using different units - years, months, weeks, and days. Useful for project planning, scheduling, and various time-based calculations.
Age Calculator: Discover Your Exact Age in Days Today
Calculate your age accurately by a set date with our easy-to-use age calculator tool. Answer the question, 'How many days old am I?' instantly! Try it now and discover your precise age in days.
Calculate the Day of the Year and Remaining Days in 2023
Calculate the day of the year for any given date and determine the number of days remaining in the year. Useful for project planning, agriculture, astronomy, and various date-based calculations.
Calculate Working Days Between Two Dates for Planning Needs
Calculate the number of working days between two dates. Useful for project planning, payroll calculations, and deadline estimations in business and administrative contexts.
Days Calculator: Find Date Differences and Time Periods
Calculate the number of days between two dates or find a date after a specific time period. Useful for project planning, event scheduling, and financial calculations.
Easy Vacation Countdown Calculator for Your Next Trip
Keep track of how many days are left until your vacation starts. This easy-to-use calculator helps you count down the days to your next trip, building excitement and aiding in travel planning.
Time Unit Converter: Years, Days, Hours, Minutes, Seconds
Convert between years, days, hours, minutes, and seconds with real-time updates. User-friendly interface for quick and accurate time unit conversions.
Total Hours Calculator for Project Management and Tracking
Calculate the total hours spent on a specific task over a given period. This tool is ideal for project management, time tracking, and productivity analysis.
Unix Timestamp to Date Converter: 12/24 Hour Format Support
Convert Unix timestamps to human-readable dates and times. Choose between 12-hour and 24-hour time formats with this simple, user-friendly converter tool.
Financial Calculators
Advanced Compound Interest Calculator for Investments and Loans
Calculate the final amount of an investment or loan using compound interest. Input the principal, interest rate, compounding frequency, and time period to determine the future value.
Calculate Service Uptime and Downtime for IT Operations
Calculate service uptime percentage based on downtime or determine allowable downtime from SLA. Essential for IT operations, service management, and SLA compliance monitoring.
Calculate Simple Interest for Loans and Investments Easily
Calculate the simple interest and total amount for investments or loans based on principal, interest rate, and time period. Ideal for basic financial calculations, savings estimates, and loan interest projections.
Comprehensive Mortgage Calculator for Home Buyers and Refinancing
Calculate mortgage repayment amounts, total interest paid, and outstanding balance based on principal, interest rate, loan term, and repayment frequency. Essential for home buyers, refinancing, and financial planning.
Comprehensive Retirement Calculator for Financial Planning
Calculate how many years you have until you can retire based on your age, life expectancy, savings rate, expected expenses, tax rate, inflation, current savings, investment returns, and pension income. Visualize how your revenue streams and capital change over time to plan your path to financial independence.
Health Personal Calculators
BMI Calculator: Quickly Determine Your Body Mass Index
Use our free BMI (Body Mass Index) calculator to quickly determine your body mass index based on your height and weight. Understand your weight status and potential health risks.
Comprehensive Residency Calculator for Tax Planning Needs
Calculate the total number of days spent in different countries during a calendar year to determine potential tax residency. Add multiple date ranges for various countries, get suggested residency based on total days, and identify overlapping or missing date ranges.
Free PSA Percentage Calculator for Prostate Health
Calculate the percentage of free PSA relative to total PSA. Essential tool for prostate cancer risk assessment and monitoring prostate health.
Mexican Carbon Footprint Calculator | Estimate CO2 Emissions
Calculate your personal carbon footprint in Mexico. Estimate CO2 emissions from transportation, energy use, and food choices. Get tips to reduce your environmental impact.
Mathematical Geometric Calculators
Calculate Cone Volume: Full and Truncated Cone Tool
Calculate the volume of full cones and truncated cones. Essential for geometry, engineering, and various scientific applications involving conical shapes.
Calculate Slant Height of a Right Circular Cone Easily
Easily calculate the slant height, radius, or height of a right circular cone using our calculator. Perfect for geometry, engineering, architectural computations, and educational purposes.
Calculate the Height of a Cone with Radius and Slant Height
Quickly calculate the height of a cone given its radius and slant height. Essential for geometry, engineering, and practical applications involving conical shapes.
Calculate the Lateral Area of a Right Circular Cone
Calculate the lateral area of a right circular cone given its radius and height. Essential for geometry, engineering, and manufacturing applications involving conical shapes.
Circle Measurement Calculator: Radius, Diameter, Area & More
Calculate the radius, diameter, circumference, and area of a circle based on one known parameter with our Circle Measurements Calculator.
Circle Radius Calculator: Find Radius from Diameter & Area
Calculate the radius of a circle using the diameter, circumference, or area. Ideal for geometry calculations and understanding circle properties.
Comprehensive Surface Area Calculator for 3D Shapes
Calculate the surface area of various 3D shapes including spheres, cubes, cylinders, pyramids, cones, rectangular prisms, and triangular prisms. Essential for geometry, engineering, and scientific applications.
Cone Diameter Calculator: Find Diameter from Height or Radius
Calculate the diameter of a cone using either its height and slant height, or its radius. Essential for geometry, engineering, and various practical applications involving conical shapes.
Explore Conic Sections with Our Advanced Calculator Tool
Just by cutting a cone with a plane, you can get many interesting curves, the conic sections! Try our conic section calculator to know the types of conic sections and how to calculate their eccentricity, and much more!
Quadratic Equation Solver: Find Roots of ax² + bx + c = 0
Web-based calculator for solving quadratic equations. Enter coefficients a, b, and c to find real or complex roots. Features error handling and clear result display.
Right Circular Cone Calculator: Area and Volume Solutions
Calculate the total surface area, volume, lateral surface area, and base area of a right circular cone.
Wetted Perimeter Calculation Tool for Channel Shapes
Calculate the wetted perimeter for various channel shapes including trapezoids, rectangles/squares, and circular pipes. Essential for hydraulic engineering and fluid mechanics applications.
Miscellaneous Tools
Cat Fur Pattern Tracker: Digital Catalog for Feline Coats
Create and manage a digital catalog of cat fur patterns with features for adding, categorizing, searching, and viewing detailed information and images. Ideal for cat enthusiasts, breeders, and veterinarians.
Constellation Viewer: Interactive Night Sky Map Generator
Generate an interactive SVG night sky map showing visible constellations based on date, time, and location. Features auto-detect or manual coordinate input, constellation names, star positions, and horizon line.
International Shoe Size Converter: US, UK, EU & More
Convert shoe sizes between US, UK, EU, JP and other international systems. Simple tool for accurate footwear sizing across global standards.
JSON Comparison Tool: Find Differences Between JSON Objects
Compare two JSON objects to identify added, removed, and modified values with color-coded results. Includes validation to ensure inputs are valid JSON before comparison.
PX to REM to EM Converter: CSS Units Calculator
Convert between pixels (PX), root em (REM), and em (EM) CSS units with this simple calculator. Essential for responsive web design and development.
Random Location Generator: Global Coordinate Creator
Generate random geographic coordinates with a visual map representation. Features include a Generate button, decimal format display, and easy copying.
Random Project Name Generator
Generate unique and creative project names for developers by combining random adjectives and nouns. Features a simple interface with a 'Generate' button and a 'Copy' button for easy clipboard access.
Simple QR Code Generator: Create & Download QR Codes Instantly
Generate QR codes from any text or URL with this straightforward tool. Instantly create scannable QR codes with a clean, minimalist interface and download them with one click.
Statistical Analysis Tools
A/B Test Significance Calculator for Quick Results
Determine the statistical significance of your A/B tests effortlessly with our quick and reliable calculator. Get instant results to make data-driven decisions for your digital marketing, product development, and user experience optimization. Perfect for websites, emails, and mobile apps.
Advanced Binomial Distribution Probability Calculator Tool
Calculate and visualize binomial distribution probabilities based on user-provided parameters. Essential for statistics, probability theory, and data science applications.
Advanced Laplace Distribution Calculator for Data Analysis
Calculate and visualize the Laplace distribution based on user-provided location and scale parameters. Ideal for probability analysis, statistical modeling, and data science applications.
Advanced Poisson Distribution Probability Calculator Tool
Calculate and visualize Poisson distribution probabilities based on user-given parameters. Essential for probability theory, statistics, and various applications in science, engineering, and business.
Advanced Z-Score Calculator for Statistical Analysis and Data
Calculate the z-score (standard score) for any data point, determining its position relative to the mean using the standard deviation. Ideal for statistical analysis and data standardization.
Calculate Raw Scores from Mean, SD, and Z-Score Easily
Determine the original data point from the mean value, standard deviation, and z-score.
Comprehensive Altman Z-Score Calculator for Credit Risk
This Altman Z-score calculator helps you assess a company's credit risk by calculating the Altman Z-Score.
Comprehensive Critical Value Calculator for Statistical Tests
Find one-tailed and two-tailed critical values for the most widespread statistical tests, including Z-test, t-test, and Chi-squared test. Ideal for statistical hypothesis testing and research analysis.
Comprehensive T-Test Calculator for Statistical Analysis
Perform all kinds of t-tests: one-sample, two-sample, and paired t-tests. This calculator allows you to conduct statistical hypothesis testing for means, aiding in data analysis and interpretation of results.
Confidence Interval to Standard Deviations Converter
Convert confidence interval percentages to corresponding standard deviations. Essential for statistical analysis, hypothesis testing, and interpreting research results.
Easy Z-Test Calculator for One-Sample Statistical Analysis
Learn about and perform one-sample Z-tests with our easy-to-use calculator. Ideal for students, researchers, and professionals in statistics, data science, and various scientific fields.
Gamma Distribution Calculator for Statistical Analysis Tools
Calculate and visualize the gamma distribution based on user-provided shape and scale parameters. Essential for statistical analysis, probability theory, and various scientific applications.
Interactive Box Plot Calculator for Data Visualization
Generate a visual analysis of your dataset using a box-and-whisker plot. This tool calculates and displays key statistical measures including quartiles, median, and outliers.
Six Sigma Calculator: Measure Your Process Quality
Calculate the sigma level, DPMO, and yield of your process using this Six Sigma calculator. Essential for quality management and process improvement initiatives.
Standard Deviation Index Calculator for Statistical Analysis
Calculate the Standard Deviation Index (SDI) to assess the accuracy of test results relative to a control mean. Essential for statistical analysis and laboratory quality control.
Wetted Perimeter Calculator for Various Channel Shapes
Calculate the wetted perimeter for various channel shapes including trapezoids, rectangles/squares, and circular pipes. Essential for hydraulic engineering and fluid mechanics applications.
Unique ID Generators
CURP Generator Tool for Testing and Validation Purposes
Generate valid, random CURPs (Clave Única de Registro de Población) for testing purposes. This tool creates CURPs that comply with official Mexican format and validation rules, without using real personal information.
Efficient CUID Generator for Unique Identifiers in Systems
Generate collision-resistant unique identifiers (CUIDs) for distributed systems, databases, and web applications. This tool creates CUIDs that are scalable, sortable, and highly unlikely to collide.
Efficient KSUID Generator for Unique Identifiers in Systems
Generate K-Sortable Unique Identifiers (KSUIDs) for use in distributed systems, databases, and applications requiring unique, time-sortable keys. KSUIDs combine a timestamp with random data to create collision-resistant, sortable identifiers.
Efficient MongoDB ObjectID Generator for Developers and Testers
Generate valid MongoDB ObjectIDs for testing, development, or educational purposes. This tool creates unique 12-byte identifiers used in MongoDB databases, composed of a timestamp, random value, and incrementing counter.
Generate and Analyze Twitter Snowflake ID Tool for Insights
Generate and analyze Twitter Snowflake IDs, unique 64-bit identifiers used in distributed systems. This tool allows you to create new Snowflake IDs and parse existing ones, providing insights into their timestamp, machine ID, and sequence number components.
Luhn Algorithm Number Validator and Generator Tool
Validate and generate numbers using the Luhn algorithm, commonly used for credit card numbers, Canadian Social Insurance Numbers, and other identification numbers. Test if a number passes the Luhn check or generate valid numbers that comply with the algorithm.
MD5 Hash Generator
Generate MD5 hashes instantly with our web-based tool. Enter text or paste content to calculate its MD5 hash. Features client-side processing for privacy, instant results, and easy copy-to-clipboard functionality. Ideal for data integrity checks, file verification, and general cryptographic purposes.
Mexican CLABE Generator & Validator for Software Testing
Generate valid Mexican CLABE numbers for testing financial applications. Create single or multiple CLABEs with proper bank codes and check digits, or verify existing ones.
Mexican RFC Generator for Testing | Create Valid Tax ID Codes
Generate valid Mexican RFC (Tax ID) codes for software testing. Create RFCs for individuals or companies with proper formatting and validation. Specify quantity and copy to clipboard.
Nano ID Generator: Create Unique and Secure Identifiers
Generate secure, unique, and URL-friendly identifiers using Nano ID. Customize length and character set for various applications in web development, distributed systems, and database management.
Random API Key Generator: Create Secure 32-Char Strings
Generate secure, random 32-character API keys with our web-based tool. Features one-click generation, easy copying, and key regeneration without page refresh.
Random CPF Generator for Testing and Development Purposes
Generate valid, random CPF (Cadastro de Pessoas Físicas) numbers for testing purposes. This tool creates CPFs that comply with the official Brazilian format and validation rules, without using any real personal information.
ULID Generator: Create Unique Sortable Identifiers Easily
Generate Universally Unique Lexicographically Sortable Identifiers (ULIDs). ULIDs are 26-character strings that combine a timestamp with random data, providing sortable, unique identifiers for various applications.
UUID Generator: Create Unique Identifiers for Your Needs
Generate Universally Unique Identifiers (UUIDs) for various applications. Create both version 1 (time-based) and version 4 (random) UUIDs for use in distributed systems, databases, and more.
Web Software Development Tools
Advanced Token Counter for NLP and Machine Learning Tasks
Count the number of tokens in a given string using tiktoken library. Select from different encoding algorithms including CL100K_BASE, P50K_BASE, and R50K_BASE. Essential for natural language processing and machine learning applications.
Image Metadata Viewer: Extract EXIF Data from JPEG and PNG Files
Upload JPEG or PNG images to view and extract all metadata including EXIF, IPTC, and technical information in an organized table format.
JSON Formatter & Beautifier: Pretty Print JSON with Indentation
Format and beautify your JSON data with proper indentation. Makes raw JSON readable with syntax highlighting and validation.
Online List Sorter Tool for Efficient Data Organization
An online tool to sort a list of items in ascending or descending order. Sort alphabetically or numerically, remove duplicates, customize delimiters, and output as text or JSON. Ideal for data organization, analysis, and processing tasks.
Online URL String Escaper for Safe Web Applications
An online tool to escape special characters in a URL string. Enter a URL, and this tool will encode it by escaping special characters, ensuring it is safe for use in web applications.
Random User Agent Generator for Web Development Testing
Generate realistic browser user agent strings with options to filter by device type, browser family, and operating system. Perfect for web development testing and compatibility checks.
Regex Pattern Tester & Validator: Test, Highlight & Save Patterns
Test regular expressions with real-time match highlighting, pattern validation, and explanations of common regex symbols. Save and reuse your frequently used patterns with custom labels.
Text Inverter Tool: Reverse Character Order in Any String
Instantly reverse the order of characters in any text. Type or paste your content and see the inverted result in real-time with this simple text reversal tool.
Text Sharing Tool: Create & Share Text with Custom URLs
Instantly share text and code snippets with unique URLs. Features syntax highlighting for multiple programming languages and customizable expiration settings.