One of the best freeware scientific calculators around. Includes good unit conversion support.

Modelled on common scientific calculators with a clear digit display, and plenty of on screen buttons providing easy access to functions with a minimal number of taps.

The unit conversion support is comprehensive and easy to access.

Includes powerful and flexible support of Float, Hex, Dec, Oct and Bin modes.

And yes it''s free!

Update Description:

Version 1.1.0 - 24th Mar 2002:

- Overhauled the look of the buttons. User can choose between a range of button types.

- Store and recall of memories now list the memory values.

- Memories displayed using the current number mode and preferences.

- Added tips to many dialogs.

- Added trig result truncation option.

- Added option for sticky Inv and Hyp buttons.

- Fixed bug with temperature conversion where choosing no conversion still did one.