Calculon is a combination of a unit/currency converter and standard calculator with 12 digits precision with trigonometric, exponential, logarithmic, date and temperature operations.

The latest currency rates can be updated from the internet either wirelessly (Treo 600/650, LifeDrive, etc) or via your desktop's connection with the provided conduit. Calculon is optimized for one-handed operation on the Treo phones!

Up to 15 conversion categories can be defined with 200 items in each. Any category can also serve as a group of constants. Easily convert between Celcius and Fahrenheit, miles and kilometers, gallons and litres, and much more.

• 15 user definable unit (and/or constant categories).
• All units of the same category can be recalculated at the same time.
• Temperature conversions between F (Fahrenheit), C (Celsius) and K (Kelvin) degrees.
• Angle formats conversion from HMS (hours, minutes, and seconds) to decimal.
• Julian day to Gregorian calendar date conversion.
• Time->seconds and Seconds->time conversion.
• Download from internet of latest worldwide currency rates (wireless+desktop).
• Supports the Euro and is compatible with all the conversion rules.
• One handed operation on Treo phones.

• Standard: +, -, x, /
• Trigonometry: sin, cos, tan, asin, acos, atan.
• Exponential/Logarithmic: x^2, y^x, 10^x, e^x, log, ln.
• Date: Date +/- number of days, number of days between two dates.
• Other functions: percentage calculation, area and circumference of a circle, constants Pi and Pi/2.

• 12 digits math precision.
• 10 user memories. You can perform arithmetic operations (+, -, x, /) with each memory.
• Copy/paste between display and clipboard.
• Each category names and values can be exported/imported to/from MemoPad memo.
• Date and time calculations.
• "Constants" mode - a given category can serve as a group of constants.
• Reversed unit conversions.
• Binary calculator (hexadecimal, decimal, octal and binary input modes).