Question 1

Which units are supported?

Accepted Answer

Length (meter, centimeter, kilometer, mile, inch, foot, yard, nautical mile); Weight (kilogram, gram, pound, ounce, metric ton, US ton); Temperature (Celsius, Fahrenheit, Kelvin); Area (square meter, square foot, acre, hectare); Volume (liter, gallon US, gallon UK, milliliter, cubic meter). 30+ units across 5 categories.

Question 2

Why does temperature work differently from other units?

Accepted Answer

Length / weight / area / volume are all linear: convert by multiplying a factor. Temperature adds an offset, so the formulas are: F = C × 9/5 + 32, C = (F - 32) × 5/9, K = C + 273.15. Common mistake: 1 °C is not 1.8 °F, it is 33.8 °F (because of the +32 offset). This calculator uses the correct formula with 4 decimal precision.

Question 3

How accurate are the conversions?

Accepted Answer

We use the international standard definitions (SI base units, plus the imperial and US customary definitions published by NIST). 1 inch = 0.0254 m exactly, 1 pound = 0.45359237 kg exactly. Precision is 4-6 decimal places — enough for engineering, cooking, and most professional use cases.

Question 4

Why not just use a calculator app?

Accepted Answer

Phone calculators only handle numbers, not units. Type 1 into a calculator and you have to remember that 1 pound is 0.4536 kg, then multiply manually. This tool understands units natively: type 1 pound, get kg (or feet, fahrenheit, etc.) instantly. Faster than lookup tables, less error-prone than mental math.

Unit Converter

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