Free Online Tools & Calculators
Professional-grade tools for developers, students, and professionals. All free, no signup required.
Our Tools
Merge PDF
Merge PDF files online for free. Combine multiple PDFs into one document with drag-and-drop reordering
PDF Splitter
Split PDF files by extracting specific pages. Perfect for separating documents, chapters, or important pages
Smart Image Compressor
Compress images to exact file sizes. Perfect for profile photos, email attachments, and web optimization
Image Cropper
Crop images with precision. Perfect for profile pictures, thumbnails, and removing unwanted areas
Data Storage Converter
Convert between Bit, Byte, KB, MB, GB, TB, PB with download time estimation
Hex to Binary Converter
Convert hexadecimal to binary and binary to hexadecimal instantly
Regex Tester
Test and debug regular expressions with real-time matching
Color Converter
Convert between HEX, RGB, and HSL color formats
Lorem Ipsum Generator
Generate placeholder text for designs and layouts
UUID Generator
Generate UUID v1 and v4 unique identifiers
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes
JWT Decoder
Decode, encode, and validate JSON Web Tokens
URL Encoder
Encode and decode URLs, query parameters, and special characters
Cron Expression Builder
Build and test cron expressions with real-time schedule preview
Unix Timestamp
Convert between Unix timestamps and human-readable dates
Text Case Converter
Convert text between UPPERCASE, lowercase, camelCase, snake_case and more
Text Counter
Count characters, words, sentences and analyze your text
SQL Formatter
Format, beautify, and validate SQL queries with customizable options
JSON Validator
Validate JSON syntax and structure with detailed error reporting
JSON Formatter
Format, beautify, and minify JSON data with syntax highlighting
Password Generator
Generate secure random passwords with customizable options
Timezone Converter
Convert time between world time zones, plan global meetings, and compare multiple time zones
Date Calculator
Calculate date differences, age, and business days
Base64 Encode/Decode
Convert text to Base64 and decode Base64 strings
Speed Converter
Convert between MPH, KM/H, meters per second, knots and feet per second
Area Converter
Convert between square feet, square meters, acres, hectares and square miles
Volume Converter
Convert between gallons, liters, cups, milliliters and fluid ounces
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin temperature scales
Weight Converter
Convert between pounds, kilograms, ounces, grams and stones
Length Converter
Convert between miles, kilometers, feet, meters, inches and centimeters
Unit Converter
Convert between metric and imperial units for length, weight, temperature and more
ROI Calculator
Calculate return on investment for your business or investment decisions
Retirement Calculator
Plan your retirement savings and estimate future retirement income
Mortgage Calculator
Estimate monthly mortgage payments including taxes and insurance
Loan Calculator
Calculate monthly payments, total interest, and amortization schedules
Compound Interest Calculator
Calculate compound interest returns on investments over time
VAT Calculator
Add or remove VAT/GST from prices with customizable tax rates
Percentage Calculator
Calculate discounts, percentage changes, and ratios for shopping and finance
BMI Calculator
Check your Body Mass Index and healthy weight range
Tip Calculator
Calculate tips and split bills among multiple people
Calculator
Standard calculator with memory functions and calculation history
Why Choose Toolest?
Instant Results
All calculations happen instantly in your browser. No waiting, no loading screens.
Privacy Focused
All calculations happen in your browser. Your input data never leaves your device.
Mobile Friendly
Optimized for all devices. Works perfectly on desktop, tablet, and mobile browsers.
41+ Essential Tools
Everything from calculators to converters, all professional-grade and free to use.
Frequently Asked Questions
Is Toolest really free?
Yes! All tools are 100% free to use. No hidden costs or premium features.
Do I need to create an account?
No account required. Just visit any tool and start using it immediately.
Is my data safe?
Yes. All calculations happen locally in your browser. Your input data is never sent to our servers. We use analytics to improve our service, but we don't collect or store your personal calculation data.
Do the tools work on mobile devices?
Yes! All tools are fully responsive and optimized for mobile, tablet, and desktop devices.
Ready to Get Started?
Choose from 41+ professional tools. No signup required, just tools that work.