Online Tools & Calculators
Useful online tools for everyday tasks
Use fast and convenient tools directly in your browser: calculators, text tools, developer tools, and other useful utilities without installing any software.
Categories
Choose the type of tool you need and get started right away.
Popular tools
Useful tools to get started quickly.
VAST Tag Tester
Test VAST, VMAP, and VPAID ad tags online
Age Calculator
Calculate exact age by date of birth
Percentage Calculator
Calculate percentages, increase, and decrease
BMI Calculator
Calculate body mass index online
Word Counter
Count words, characters, and lines
JSON Formatter
Format and validate JSON online
Why choose ToolSite
Fast and simple
Open a page, enter your data, and get results instantly.
No installation
All tools work directly in your browser without extra software.
Useful categories
Calculators, text tools, and developer tools in one place.