Supported conversions
This tool covers the three unit categories people convert most often: length (metric and imperial, from millimeters to miles), weight (grams to pounds and everything between), and temperature (Celsius, Fahrenheit, and Kelvin). All conversions use standard, precise conversion factors.
Why unit conversion trips people up
Most conversion mistakes happen with temperature, since it isn't a simple multiplication like length or weight — Celsius to Fahrenheit requires both a multiplier and an offset. This tool applies the correct formula for every pair automatically, so there's no need to remember the math.
Frequently asked questions
Why is my temperature conversion showing a decimal number?
Temperature conversions between Celsius, Fahrenheit, and Kelvin rarely land on whole numbers because the formulas involve both multiplication and an offset. This is expected and mathematically correct.
Which unit conversions are most commonly searched for?
Length conversions like centimeters to inches, and weight conversions like kilograms to pounds, are the most frequently needed — both are fully supported here alongside several other common units in each category.
Can I convert between two imperial units, like inches to miles?
Yes. You're not limited to metric-to-imperial conversions — any two units within the same category (length, weight, or temperature) can be converted directly against each other.
How accurate are the conversion factors used?
The tool uses standard, internationally recognized conversion factors (for example, exactly 25.4mm per inch), so results are precise to six decimal places.