Help & Support
Get the most out of LumoCalculator with our comprehensive help guide. Find answers to common questions and learn how to use our tools effectively.
Quick Access
Calculator Categories
Health & Medical
BMI, BMR, Body Fat, Calorie, and Age calculators for health monitoring
Popular calculators:
Math & Science
Mathematical calculations including percentages, fractions, and basic arithmetic
Popular calculators:
Finance & Investment
Financial planning tools for mortgages, discounts, and business metrics
Popular calculators:
Business & Professional
Payroll, overtime, and professional business calculation tools
Popular calculators:
Daily Life Tools
Everyday calculations for tips, paint coverage, and home projects
Popular calculators:
Unit Converters
Convert between different units of measurement
Popular calculators:
Frequently Asked Questions
Getting Started
How do I use the calculators?
Simply navigate to any calculator page, enter your values in the input fields, and the results will be calculated automatically. Most calculators provide instant results as you type.
Are all calculators free to use?
Yes! All our calculators are completely free to use with no hidden fees, subscriptions, or registration required. Simply visit any calculator and start using it immediately.
Do I need to create an account?
No account is needed. All calculators work without registration and your calculation data stays private on your device.
Privacy & Data
Do you store my calculation data?
No, we prioritize your privacy. All calculations are performed locally on your device using client-side JavaScript. Your input data and results never leave your browser or reach our servers.
Are my calculations secure?
Yes, since all calculations happen locally on your device, your sensitive data (like salary, health metrics, financial information) remains completely private and secure.
Do you use cookies?
We only use essential cookies for basic website functionality. We don't use tracking cookies or collect personal information from your calculations.
Calculator Features
Which calculators are available?
We offer 90+ calculators across 6 categories: Health & Medical, Math & Science, Finance & Investment, Business & Professional, Daily Life Tools, and Unit Converters. New calculators are added regularly.
How accurate are the calculations?
Our calculators use industry-standard formulas and are thoroughly tested for accuracy. However, they are designed for informational purposes and should not replace professional advice for critical decisions.
Can I use calculators on mobile devices?
Yes! All our calculators are fully responsive and optimized for mobile phones, tablets, and desktop computers. The interface automatically adapts to your screen size.
Technical Support
What if a calculator isn't working properly?
If you encounter any issues, try refreshing the page first. If the problem persists, please contact us through our support channels with details about your browser and the specific issue.
Which browsers are supported?
Our calculators work on all modern browsers including Chrome, Firefox, Safari, and Edge. We recommend using the latest version of your preferred browser for the best experience.
Can I save my calculation results?
Currently, results are not automatically saved. We recommend copying important results to your notes or taking screenshots. We're considering adding a save feature in future updates.
Getting Started Guide
Choose a Calculator
Browse our categories or use the search function to find the calculator you need.
Enter Your Data
Input your values in the provided fields. Most calculators show results instantly as you type.
Get Your Results
View your calculated results with detailed breakdowns and helpful explanations.
Still Need Help?
Can't find what you're looking for? Our support team is here to help you get the most out of LumoCalculator.