About Us
Your trusted source for free online calculators
LifeByNumbers provides free, accurate, and privacy-focused online calculators for all your financial, health, and everyday needs.
Our Mission
We believe that everyone should have access to professional-grade calculation tools without compromising their privacy or paying fees. Our mission is to provide accurate, fast, and user-friendly calculators for all your financial, health, and everyday calculation needs.
Why Choose LifeByNumbers?
100% Privacy Focused
No accounts, no tracking, no data storage. All calculations happen in your browser.
Lightning Fast
Instant results with no loading times. Optimized for speed on all devices.
Accurate & Reliable
Professional-grade calculations with up-to-date tax rates and formulas.
Mobile Optimized
Perfect experience on phones, tablets, and desktops with responsive design.
Our Calculator Suite
We offer a comprehensive collection of calculators across multiple categories:
- Financial: Mortgage, take-home pay, savings goals, debt payoff, and more
- Health: BMI, calorie tracking, ideal weight calculations
- Utility: Percentage, tip, age, date, and unit conversions
Our Commitment
We are committed to maintaining the highest standards of accuracy, privacy, and user experience. Our calculators are regularly updated to reflect current tax brackets, rates, and best practices. We never store your personal information or track your usage.
About the Team
LifeByNumbers was created by a software engineer with over 15 years of experience in financial application development. Having worked at fintechs and banks, we understand that people need simple, accurate, and private tools to make important financial decisions.
Our Methodology
All our calculators are developed using data from official government sources and updated regularly. For tax calculators, we use official rates published by HMRC, IRS, and other tax authorities. For health calculators, we follow WHO and CDC guidelines. Each calculation is verified by experts before release.
Our Sources
We use only official and authoritative sources:
Contact Us
Have questions or suggestions? Contact us at contact@lifebynumbers.net