Guides, explainers and references for every conversion.
Hand-written by our team. Formulas, history, common mistakes and worked examples — paired with the same interactive converters you'd use anyway.
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How to Convert Feet to Meters
A simple, accurate guide to the foot-to-meter conversion used everywhere from construction to athletics.
Celsius to Fahrenheit, Explained
The only temperature scales most people use — and the simple formula that links them.
Metric vs Imperial: A Practical Guide
Two measurement systems, one planet — when each is used and how to switch between them confidently.
All guides
18 guides · more added regularly.
The Modern Cooking Conversion Guide
Cups, grams, milliliters, tablespoons — convert any recipe to your kitchen's measurement system.
What Is a Kilowatt-Hour?
The unit on your electricity bill — and how to translate it into real-world energy use.
PSI vs Bar: Pressure Units, Compared
The two pressure scales you'll see on tires, hoses and weather maps.
Binary and Hexadecimal, Explained
How computers count — and why hex shows up everywhere from color codes to memory dumps.
MB vs MiB: Why Your Drive Looks Smaller
The difference between decimal and binary data units — and why a 1 TB drive shows up as 931 GiB.
Miles to Kilometers: The Complete Guide
The single factor that turns any mileage into kilometers — plus the math, the history and a fast mental shortcut.
The BMI Formula, Explained
Where Body Mass Index comes from, what it actually measures, and where it falls short.
The Mortgage Payment Formula, Broken Down
How banks turn loan amount, rate and term into a monthly payment — and how to do it yourself.
Kilometers vs Miles: A Side-by-Side
When the difference matters and when it doesn't.
Engineering Conversion Standards
The unit conventions used in mechanical, civil and electrical engineering — and the conversions that trip teams up.
Medical Measurement Conversions
Drug dosing, lab values and patient weight — the everyday conversions clinicians can't get wrong.
The Fuel Economy Formula Guide
MPG, L/100km and km/L — why the math runs in opposite directions.
Scientific Notation, Explained
How scientists write the unimaginably large and infinitesimally small without losing track of zeros.
The Universal Conversion Cheat Sheet
Every factor you actually use — distance, weight, volume, area, temperature, energy and data — in one place.
Weight vs Mass: They're Not the Same
Why a 70 kg person 'weighs' nothing in orbit — and what your bathroom scale actually measures.
The Conversion Glossary
Plain-language definitions for every unit, formula and concept used across the platform — each entry links back to the converter or guide that uses it.
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