About Calcufast
Free, fast, and accurate online calculators for everyone.
Our Mission
Calcufast was born with a simple mission: making professional calculation tools accessible to everyone, regardless of where they are or how much they can afford. We believe everyone deserves access to accurate and reliable calculators to make better financial, health, and everyday decisions.
Why Calcufast?
Instant Results
Calculations are processed in real time in your browser. No waiting, no submit buttons.
Verified Formulas
We use industry-standard formulas, verified by professionals in each field.
Multilingual
Available in English, Spanish, and Portuguese to serve a global community.
100% Private
All calculations run locally on your device. We never store or send your data.
How It Works
Calcufast works entirely in your browser. When you enter values into our calculators, the calculations are processed instantly on your device using standard mathematical formulas. You don't need to create an account, download anything, or share personal information. Simply open the calculator you need and start calculating.
Our Commitment
We are committed to keeping Calcufast free and accessible. We fund the development and maintenance of the site through non-intrusive advertising, which allows us to continue offering quality tools without charging our users. We constantly update our calculators and add new tools based on our community's needs.
Contact Us
Have suggestions, found a bug, or want us to add a new calculator? We'd love to hear from you.