TopToolsAiConvert between common units of distance, weight and temperature (kilometers/miles, kilograms/pounds, Celsius/Fahrenheit) with a quick reference table of common conversion factors. 100 kilometers converts to roughly 62.1 miles, 10 kilograms to about 22.05 pounds, and 30°C to 86°F — the underlying conversion factors stay visible so you can sanity-check the result rather than just trusting a black box.
Last updated: 1 Sep 2026
How to use Unit Converter
- Choose the type of unit you want to convert (length, weight, volume, etc.).
- Enter the value and pick the "from" and "to" units.
- Click "Convert" to see the result instantly.
Frequently asked questions
Which unit pairs are supported?
Kilometers/miles, kilograms/pounds, and Celsius/Fahrenheit — the most commonly needed everyday conversions.
Why did I get an error message?
That means the "from" and "to" units aren't compatible (e.g. trying to convert km to kg) — pick units from the same category.
Can I convert km to Fahrenheit or similar mismatched pairs?
No — only units measuring the same kind of quantity can convert to each other (distance to distance, weight to weight, temperature to temperature).
How accurate are the conversions?
They use standard, precise conversion factors (e.g. 1 mile = 1.60934 km), so results are exact, not rounded approximations.
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