Density Unit Converter
Convert anything — length, weight, temperature, currency and more — fast, offline, and private.
Free. No ads, no accounts, no tracking. iPhone, iPad, Android, and Mac.
See it
Two drag-to-pick wheels, a calculator-style keypad, and a search bar that jumps straight to any conversion. Scroll the gallery to see more.
What it does
20 categories, hundreds of units
Length, mass, area, volume, speed, temperature, time, angle, energy, power, pressure, force, torque, fuel economy, digital data, network speed, shoes, pants, tops, and currency.
Live currency, even offline
Rates for 150+ world currencies refresh once a day and are cached on your device, so conversions keep working with the last saved rates when you are offline — always clearly dated.
Search anything
Type “15 yards mm” or “5 usd mxn” and jump straight to the conversion. Search finds units by name or symbol across every category.
Built-in calculator
A keypad with + − × ÷ and = — do the math and convert the result in one step.
Drag to pick
Spin the two wheels to choose your from and to units. Your most recent units float to the top of each category.
Private by design
No sign-in, no analytics, no ads. Your settings stay on your device. The only thing that ever leaves your phone is an anonymous request for public exchange rates.
Privacy
Density Unit Converter collects no personal data. There is no account, no analytics, and no advertising. The app’s only network request is an anonymous, once-a-day fetch of public exchange rates over HTTPS.
Read the full privacy policy →