About AllCalculators.org
Free, fast, and private online calculators for everyone
Our Mission
AllCalculators.org provides a growing collection of free online calculators and developer tools that are fast, accurate, and easy to use. Whether you need to calculate your BMI, estimate mortgage payments, convert units, format JSON, or generate hashes — we have a tool for that.
What We Offer
Scientific calculator, unit converter, and more for everyday math.
BMI, TDEE, sleep cycle, and pregnancy calculators for wellness tracking.
Compound interest, mortgage, 401(k), TFSA, and credit score tools for financial planning.
Earnings estimators for YouTube, Instagram, TikTok, and Twitter/X.
GPA and CGPA calculators for students worldwide.
Hash generator, JSON formatter, and JavaScript formatter/validator for developers.
Privacy First
All calculations run entirely in your browser. Your data is never sent to our servers, never stored, and never shared. We believe your information should stay on your device.
No Account Required
Every tool on AllCalculators.org is completely free to use with no sign-ups, no logins, and no paywalls. Just open a calculator and start using it immediately.
Built for Speed
Our tools are lightweight and optimized for performance. They work on any modern browser — desktop, tablet, or phone — with instant results and no page reloads.
Open to Feedback
Have a suggestion for a new calculator? Found a bug? We would love to hear from you. Visit our contact page to get in touch.