Tool Plaza hosts dozens of practical utilities—from Base64 and JSON validators to BMI and timezone converters—available in seven languages. Each tool page explains what the calculator or converter does, when to use it, and its limitations.
Most processing happens in your browser. We do not upload your input to our servers unless a tool explicitly needs server-side generation (for example, sample Italian fiscal codes). You stay in control of your data.
Browse by category, search from the header, or open a tool directly. For questions, visit our About and Contact pages. Health and financial tools provide estimates for learning purposes only; see our Terms of Service for details.
Encrypt and decrypt messages using the most commonly used encryption algorithms
12 tools
Generate randomly, calculate or validate an Italian tax code for testing purposes
3 tools
Use our tool to calculate your estimated mortgage payments
Swear in a fanciful way by choosing your favorite swear word yourself!
Generate a name for your pet, calculate dog years
2 tools
Generate hashes using different hash algorithms
5 tools
Generates person data in various formats including XML, JSON, YAML or CSV
5 tools
Generate various types of secrets or passwords
3 tools
Generate and validate VAT numbers for various European countries
2 tools
Calculator for weekly or monthly work overtime hours
Use time and breaks efficiently with the pomodoro timer
Calculate the total time elapsed between two dates or start a countdown
4 tools
96 tools
26 tools
6 tools
23 tools
12 tools
Useful jump rope tools Free online tool in your browser.
Useful running and walking tools
Translate between text characters and their ASCII numeric codes
2 tools
Calculate body composition
Calculate your daily caloric needs
2 tools
Validate identifier checksums such as Luhn cards and MOD-97 IBAN keys
3 tools