Welcome to CalcTools

Your collection of free, powerful online calculator tools for math, finance, gaming, and security.

Math Tools

Advanced mathematical calculators for complex computations and analysis

Financial calculators for smart money decisions and precise calculations

Essential calculators for competitive gamers and enthusiasts

Tools to keep you secure and protected online

All calculations are performed instantly in your browser

Your data never leaves your device - completely secure

No subscriptions, no ads - just powerful tools