Tool Vault
120+ free tools, converters, generators & calculators
Your daily toolbox for the internet
Convert, calculate, generate — from JSON and colors to health and SEO links. Blazing fast, distraction-free.
Popular Tools
Most used this week
Text Content Tools
Clean, reformat, and transform text in seconds
🔤📝📄🔗🗑️📧📃✍️📊
Case Converter
UPPER, lower, Title Case
Word Character Counter
Count words & characters
Remove Line Breaks
Clean text formatting
Slug Generator
URL-friendly slugs
Duplicate Line Remover
Remove duplicate lines
Email Extractor
Extract email addresses
Lorem Ipsum Generator
Placeholder text generator
Paragraph Formatter
Format paragraphs
Word Frequency Counter
Analyze word usage
Developer Data Tools
Format, encode, and debug like a pro
💾🔐🌐🏷️🆔🔒🔍⏰⏱️🎫
JSON Formatter
Pretty print JSON
Base64 Encode Decode
Base64 conversion
URL Encoder Decoder
Encode/decode URLs
HTML Entity Converter
HTML entities
UUID Generator
Generate UUIDs
Hash Generator
MD5, SHA hashes
Regex Tester
Test regex patterns
Cron Expression Helper
Build cron schedules
Unix Timestamp Converter
Convert timestamps
JWT Decoder
Decode JWT tokens
Color Design Tools
Perfect colors, gradients, and ratios for your UI
Random Fun Generators
Random numbers, names, colors, and more
Financial Calculators
Plan your finances with loans, retirement, and income tools
🧮🏷️🧾💵⏰💼🏦🚗🏠🏡💰🏖️📈⚖️💹💳🛍️💲📊⏱️📊💸₿💎
Percentage Calculator
Calculate percentages
Discount Calculator
Sale prices
Sales Tax Calculator
Calculate sales tax
Paycheck Calculator
Net pay estimator
Overtime Calculator
Time and a half
Hourly to Salary
Wage conversion
Loan Calculator
EMI & interest
Car Payment Calculator
Auto loan payments
Mortgage Affordability Calculator
Home affordability
Mortgage Payment Calculator
Monthly mortgage payments
Savings Goal Calculator
Track savings
Retirement Savings Calculator
Retirement planning
Compound Interest Calculator
Investment growth
Break Even Calculator
Business break-even
Income Converter
Salary converter
Credit Card Payoff Calculator
Debt payoff timeline
Etsy Fee Calculator
Etsy seller fees
Markup Calculator
Price markup & margin
Debt To Income Calculator
DTI ratio calculator
Time Card Calculator
Hours worked calculator
ROI Calculator
Return on investment
Inflation Calculator
Money value over time
Crypto Calculator
Crypto profit & loss
Net Worth Calculator
Track assets & liabilities
Health & Fitness
Track your health, fitness, and wellness goals
🩺⚖️📊🔥🍎⚡🍱💪💧🏃👣⚖️📅🤰
BMI Calculator
Body mass index
Ideal Weight Calculator
Calculate ideal body weight
Body Fat Calculator
Estimate body fat percentage
BMR Calculator
Basal metabolic rate
Calorie Calculator
Daily calorie needs
TDEE Calculator
Total daily energy expenditure
Macro Calculator
Daily macronutrient needs
Protein Intake Calculator
Protein requirements
Water Intake Calculator
Daily water requirements
Pace Calculator
Running pace
Steps To Distance Calculator
Steps to miles/km
Weight Converter
Convert weight units
Ovulation Calculator
Fertility window tracker
Pregnancy Due Date Estimator
Estimate due date
Math Everyday Calculators
Quick math for everyday needs
🍽️📏👕👟🎓➗√🔬🧮🌡️📏⚡🫙
Tip Calculator
Calculate tips
Unit Converter
Convert units
Clothing Size Calculator
Convert clothing sizes
Shoe Size Calculator
Convert shoe sizes
GPA Calculator
Calculate grade point average
Fraction Calculator
Add, subtract, multiply fractions
Square Root Calculator
Calculate square roots
Scientific Calculator
Advanced math calculator
Math Solver
Solve math equations
Temperature Converter
Celsius ↔ Fahrenheit ↔ Kelvin
Length Distance Converter
Convert length & distance
Speed Converter
MPH ↔ KPH ↔ m/s
Volume Converter
Liters ↔ gallons ↔ cups
Construction Calculators
Materials, measurements, and project planning
🏗️🧱💰📐👷🏠🪵🎨⬜🪓⚙️🧰📐
Concrete Calculator
Concrete volume & cost
Drywall Calculator
Drywall materials
Construction Cost Calculator
Project cost estimates
Square Footage Calculator
Calculate area
Labor Cost Calculator
Labor & wages
Roofing Calculator
Shingles & materials
Flooring Calculator
Floor materials
Paint Calculator
Paint coverage
Tile Calculator
Tile quantities
Lumber Calculator
Board feet & costs
Rebar Calculator
Rebar weight & length
Plaster Calculator
Plaster materials
Area Converter
Square feet ↔ acres ↔ hectares
Time, Productivity Planning
Time zones, dates, timers, and streaks
Web, Business SEO
Links, meta tags, sitemaps, and AdSense helpers
🏷️🤖🗺️🔗🔎📰🧪💸💹
Meta Tag Generator
SEO meta tags
robots.txt Generator
Robots file
Sitemap Builder
XML sitemaps
UTM Link Builder
Campaign links
SERP Snippet Preview
Preview Google snippet
Open Graph Preview
Preview social cards
Robots.txt Tester
Test allow/disallow rules
AdSense Estimator
Earnings estimate
Margin Calculator
Profit margins
Utility Tools
QR codes, conversions, and utilities
📱📊📄🖼️🧾✍️📷💾🔄👥
QR Code Generator
Create QR codes
Barcode Generator
Generate barcodes
PDF Merger
Merge PDF files
Image Compressor
Compress images
Invoice Generator
Create invoices
Signature Generator
Digital signatures
Barcode Scanner
Scan barcodes
File Size Converter
Convert file sizes
CSV to JSON Converter
Convert CSV to JSON
Random Team Generator
Generate random teams
Frequently Asked Questions
What is Tool Vault?
Tool Vault is a free collection of 120+ online tools, calculators, converters, and generators designed for developers, designers, marketers, and everyday users. All tools work instantly in your browser with no sign-up required.
Are these tools really free to use?
Yes, 100% free forever. Tool Vault provides unlimited access to all tools with no subscriptions, hidden fees, or usage limits. No credit card required, no tracking, just fast and helpful tools.
Do I need to create an account?
No account needed! All tools work instantly without registration. Your data stays private - calculations happen entirely in your browser and nothing is stored on our servers.
Can I use Tool Vault on mobile devices?
Absolutely. Tool Vault is fully optimized for mobile phones and tablets. All tools are responsive and work seamlessly on any device with a modern web browser.
How accurate are the calculators?
Our calculators use industry-standard formulas and are thoroughly tested for accuracy. However, for critical financial, legal, or medical decisions, always consult with a qualified professional.