Pin your most-used conversions and convert in under 5 seconds — that's what ConvertX is built for.

⭐ FAVOURITES — YOUR PERSONAL CONVERSION DASHBOARD

Most converter apps make you drill through menus every single time. ConvertX flips that. Pin any conversion pair to your Home screen — kg to lbs, °C to °F, cups to mL — and it's right there every time you open the app. Tap, type, done. No menus, no searching, no wasted time.

- Pin favourite conversion pairs for instant access
- Each favourite is a live conversion card — type and see results in real time
- Swap source and target units with one tap

📋 PASTE FROM CLIPBOARD

Copied a number from a message, spreadsheet, or lab report? The built-in numeric keyboard includes a dedicated paste button so you can drop values into any input field instantly. No switching keyboards, no selecting text — just paste and convert.

📐 20 CONVERSION CATEGORIES — 400+ UNITS

Everything from everyday conversions to specialist engineering and medical units:

- Weight & Mass — mg, g, kg, lbs, oz, stone, carats, atomic mass and more
- Length & Distance — mm to miles, nautical miles, light years, parsecs
- Volume — mL, litres, US cups, UK cups, AU cups, gallons, barrels — US and UK clearly labelled
- Temperature — Celsius, Fahrenheit, Kelvin, Rankine, Réaumur
- Medical / Biolab — Cholesterol, glucose, HbA1c, creatinine, bilirubin, electrolytes and more. Convert between mg/dL and mmol/L. Pure numeric conversion with conversion factor shown.
- Area, Speed, Time, Pressure, Energy, Power, Digital Storage, Fuel Economy, Angle, Force, Density, Numeral Systems, Shoe Sizes — all included.

🛠️ BUILT-IN TOOLS
No need for separate calculator apps:

- World Time — current time in multiple cities simultaneously
- Age Calculator — exact age from date of birth
- Date Difference — days, weeks, months and years between two dates
- BMI Calculator — metric and imperial with WHO category

⌨️ CUSTOM NUMERIC KEYBOARD

Purpose-built keyboard with operators (+, −, ×, ÷) so you can type expressions like "5.5 × 2" and convert the result directly. Includes a dedicated paste-from-clipboard button for quick data entry.

🔄 REAL-TIME CONVERSION ENGINE

Results update with every keystroke — no convert button needed. Bi-directional conversion with a single tap swap button.

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