Convert anything. Anytime.
Fifteen categories of units, answered as you type. No account, no connection, no waiting.
- Works offline
- No account
- English + Arabic (RTL)
Interactive demo of the app's converter. Try it.
One value, every unit.
The Multi-Unit Matrix shows your number in every other unit of the category at once. Copy a single row or the whole table.
Right where other converters guess.
Temperature is not a ratio
It has an offset, so the formula changes with the pair. Values below absolute zero are rejected, not converted.
Fuel economy runs backwards
L/100 km falls as mpg rises, so it is converted as a reciprocal. Zero is rejected, and US and Imperial gallons are separate.
US and Imperial stay apart
A gallon, a pint or a cup means different amounts depending on where you are. Each has its own unit.
MB is not MiB
Decimal (SI) and binary (IEC) data units are labeled and never merged.
Honest about approximations
Months and years are not fixed lengths, so those results are marked approximate. Volume never silently turns into weight without a density.
Fifteen categories. Plus a few quick tools.
- Length km→mi
- Weight kg→lb
- Temperature °C→°F
- Area m²→ft²
- Volume L→gal
- Speed km/h→mph
- Time h→min
- Data storage MB→MiB
- Energy kcal→kJ
- Power hp→kW
- Pressure bar→psi
- Frequency kHz→MHz
- Fuel economy L/100km→mpg
- Angle deg→rad
- Cooking cup→mL
Search units by name or symbol, with recent and common ones first. Keep favorites and a searchable history. Quick tools cover percentages, discounts, fraction and decimal, Roman numerals, and binary, decimal and hex.
Nothing leaves your phone.
- No account, no sign-upThere is no login and no ConvertX server. Core conversion works with no internet connection.
- History stays on the deviceConversions, favorites and settings are stored locally and are deleted when you uninstall or clear history.
- No analytics or crash-reporting SDKsThe free version shows Google AdMob ads. Pro removes them.
Free is complete. Pro is for power users.
| Feature | Free | Pro |
|---|---|---|
| All 15 categories and quick tools | Included | Included |
| Ads | Yes | None |
| Precision | Up to 6 decimals | Up to 12 decimals |
| History kept | 100 to 500 | 1,000 to 5,000 |
| Accent themes | Blue | Extra colors |
| Customizable dashboard | — | Included |
One-time purchase, no subscription.
Get ConvertX.
Light or dark, English or Arabic, small text or large. Free to start.