A simple unit converter that just works
When you need to convert something quickly — DIY, travel, sports or work — you can get it done here in a few clicks.
Pick a category (e.g. Length, Weight, Temperature), enter a value, then choose from and to units. Popular converters are listed above — click and convert.
We use official (SI/BIPM/NIST) factors and sensible rounding. Need more decimals? Adjust it in the converter.
Popular conversions
FAQ
Can I use it on my phone?
Yes. The site is responsive and mobile‑friendly.
How accurate are the conversions?
We use official factors with sensible rounding. For critical work, double‑check with multiple sources.
Where can I find explanations?
Open a category; below the converter you’ll find a short explainer with formulas and examples.
Which categories are supported?
Length, weight, temperature, area, volume, speed, time, data, power, pressure, energy, angle, fuel, wire, flow.
Is it free?
Yes.
Which languages are available?
English, Hungarian, German, Spanish, French and Italian.