About CoolConversion

Our Mission

To provide 100% free, accurate, and easy-to-use calculation tools that help millions of users worldwide solve everyday math, conversion, and financial problems.

Since our launch in 2014, we've served millions of users across the globe, making complex conversions and calculations simple and accessible to everyone.

CoolConversion also operates HowMany.wiki (online since 2016), a companion reference library focused on cooking, recipe and everyday measurement conversions.

Why Choose CoolConversion?

✓ 12+ Years of Experience

Operating since 2014, we've refined our tools based on millions of user interactions and feedback.

✓ 400+ Free Tools

Comprehensive collection spanning 17+ categories including weight, length, temperature, finance, math, and more.

✓ Step-by-Step Solutions

Not just results - we show formulas, conversion factors, and worked examples so you understand the math.

✓ Mobile-Friendly

All tools work perfectly on desktop, tablet, and smartphone - calculate anywhere, anytime.

✓ No Registration Required

Access all features instantly - no sign-up, no subscriptions, no hidden fees.

✓ Precise Calculations

Using exact conversion factors and industry-standard formulas for accurate results.

What We Offer

Unit Converters

Convert between 100+ units in multiple categories:

• Weight (Mass) - Kilograms, pounds, stones, ounces, grams, and more
• Length & Distance - Meters, feet, inches, kilometers, miles, centimeters
• Temperature - Celsius, Fahrenheit, Kelvin conversions
• Volume - Liters, gallons, cups, milliliters, cubic meters
• Area - Square meters, acres, hectares, square feet
• Speed - mph, km/h, meters per second, knots
• Pressure - PSI, bar, pascal, kPa, atmospheres
• Energy - Joules, calories, BTU, kilowatt-hours
• Power - Watts, horsepower, kilowatts, BTU/hour
• Angle - Degrees, radians, gradians, DMS format
• Data Storage - Bytes, kilobytes, megabytes, gigabytes, terabytes

Mathematical Calculators

• Percentage Calculator - Calculate percentages, increases, decreases, and differences
• Fraction Calculator - Add, subtract, multiply, divide fractions
• Base Converter - Binary, octal, decimal, hexadecimal with step-by-step solutions
• Roman Numeral Converter - Arabic to Roman and vice versa
• LCM & GCF Calculators - Least common multiple and greatest common factor
• Scientific Notation - Convert numbers to and from scientific notation

Financial Calculators

• Compound Interest Calculator - Calculate investment growth with detailed breakdowns
• Sales Tax Calculator - Calculate tax amounts and final prices
• Tip Calculator - Split bills and calculate tips
• Currency Converter - Real-time exchange rates

Health & Fitness Tools

• BMI Calculator - Body Mass Index with health classifications
• Calorie Calculators - Walking, running, and exercise calorie burn
• Age Calculator - Calculate exact age with detailed breakdowns

Date & Time Tools

• Date Calculator - Calculate days between dates
• Time Converter - Convert between time units
• Day of Week Calculator - Find the day for any date
• Leap Year Calculator - Check if a year is a leap year

Specialized Converters

• Cooking Converters - Volume to weight conversions for ingredients
• Density Calculators - Volume to mass conversions
• Electrical Calculators - Volts, amps, watts conversions
• Construction Tools - Volume to mass for building materials

Our Philosophy

Education First

We believe in teaching, not just calculating. That's why our converters show:

• The exact conversion factor used
• The complete formula applied
• Step-by-step examples with real-world scenarios
• Alternative representations (fractions, decimals, scientific notation)
• Conversion tables for quick reference

For example, our Volume Converter doesn't just show "1 liter = 0.264 gallons" - it shows why and how with detailed explanations including conversion factors, formulas, and alternative fraction representations.

Show Your Work

Our Base Converter is one of our most popular tools because it shows every step of the calculation, making it perfect for students learning number systems.

Our Commitment to You

Always Free

We've been free since 2014 and will remain free forever. No premium features, no paywalls, no credit card required.

Privacy Focused

We don't require personal information to use our tools. No registration means your privacy is protected.

Constantly Improving

We regularly update our tools based on user feedback, fix bugs, improve accuracy, and add new features.

Ad-Supported

We display non-intrusive ads to keep the site running. This allows us to offer all tools completely free while covering hosting and development costs.

CoolConversion by the Numbers

Who We Serve

Students

From elementary to university level, our step-by-step solutions help students understand conversions and calculations, not just get answers.

Professionals

Engineers, scientists, architects, chefs, and professionals from all fields rely on our accurate converters for their daily work.

International Users

Converting between metric and imperial systems for travel, shopping, cooking, or business? We make it simple.

DIY & Home Projects

Planning renovations, following recipes from other countries, or calculating material quantities? Our tools help you get it right.

Fitness Enthusiasts

Track your weight in different units, calculate calories burned, or convert distances for your workout plans.

Our History: The Story Behind CoolConversion

CoolConversion began in 2014 as a personal project with a simple goal: create better unit converters that actually help people understand the math, not just see a result.

How We Evolved

What started with basic converters quickly evolved as we realized users wanted more than just answers - they wanted to learn. So we added:

• Conversion factors and formulas
• Step-by-step worked examples
• Multiple number representations (fractions, decimals, scientific notation)
• Real-world application examples
• Comprehensive conversion tables

Over the past 12+ years, we've expanded from a handful of converters to over 400+ specialized tools across 17+ categories. But our core mission remains the same: provide free, accurate, educational tools for everyone.

This isn't just a business — it's a passion project driven by the satisfaction of helping millions solve their calculation problems every year.

About the Author

Adilson Fernandes — Electronics Engineer

Former telecom measurement engineer with hands-on experience in high-precision instruments (network analysers, oscilloscopes, spectrum analysers, calibrated voltmeters and ammeters) and cellular network planning and optimisation. Web apps developer since 2014.

As the sole developer and content reviewer of CoolConversion.com, Adilson personally verifies all conversion factors, formulas, and editorial content against primary sources including NIST, BIPM, and ISO standards.

How we ensure accuracy →

Looking Forward

We're committed to continuous improvement. Our roadmap includes:

• Adding more specialized converters based on user requests
• Improving mobile experience and performance
• Expanding educational content with more examples and explanations
• Adding support for more languages
• Creating API access for developers
• Building custom calculator tools for specific industries

Get in Touch

We love hearing from our users! Whether you have:

• Suggestions for new tools or features
• Bug reports or technical issues
• Questions about how to use our calculators
• Feedback on your experience
• Business inquiries or partnership opportunities

Contact Us

We read every message and respond as quickly as possible. Your feedback helps us improve and grow!

Trust, Security & Privacy

All calculations are performed locally in your browser whenever possible, ensuring your data stays private. For tools requiring server-side processing, we never store or log your input data.

Our Security Practices

• HTTPS encryption for all connections
• No tracking of personal information
• No third-party data sharing
• Regular security audits and updates

Thank You

To everyone who has used CoolConversion over the past 12 years - thank you. Your trust and support allow us to continue providing these tools completely free.

Whether you're a student using our converters for homework, a professional using them at work, or someone who stumbled upon us while googling "kg to lbs" - we're honored to be part of your day.

Here's to the next 12 years of free, accurate, educational tools! 🎉