Free Online Utility Tools
A comprehensive collection of daily-use utilities designed for accuracy and privacy. From health metrics to technical data conversions, our tools are built to run entirely in your browser for a safe and seamless experience.
Age Calculator
Find your exact age in years, months and days from any date.
Find Age →BMI Calculator
Calculate your Body Mass Index and healthy weight range instantly.
Check BMI →Unit Converter
Convert length, weight, temperature, speed and volume units with precision.
Convert →Date Difference
Calculate the exact number of days, weeks, and months between two dates.
Calculate Duration →IMEI Validator
Verify any 15-digit mobile IMEI number using the industry-standard Luhn algorithm.
Validate IMEI →Battery Life
Estimate device battery runtime based on capacity and current consumption.
Estimate →Data Converter
Convert between KB, MB, GB and TB data storage units accurately.
Convert Data →Storage Calculator
Estimate how many photos, songs, or videos fit on any storage drive.
Plan Storage →Versatile Tools for a Digital World
Our utility suite is designed to handle the small but important tasks that crop up in daily life and work. Whether you are checking your health metrics or planning a technical electronics project, accuracy and ease-of-use are our top priorities.
Why Choose OrangeTool Utilities?
- Browser-Based Math: All logic is executed on your device. No data is sent to a server.
- Clean Interface: No complex menus or intrusive ads. Just the results you need.
- Mobile Friendly: All tools are fully responsive and work on any smartphone or tablet.
- Cross-Industry: Tools for health, finance, tech, and general life management.
Frequently Asked Questions
How accurate is the BMI calculator?
Our BMI calculator uses the standard WHO formula. While it is a good general health indicator, please consult with a medical professional for a comprehensive health assessment.
What is the 'Luhn Algorithm' in IMEI validation?
The Luhn algorithm is a simple checksum formula used to validate a variety of identification numbers, such as credit card numbers and IMEI numbers, to catch accidental entry errors.
Can I use these tools offline?
Yes. Once the page is loaded in your browser, the tools will continue to work even if you lose your internet connection, as all the calculation logic is saved locally in your browser's memory.