Unit Conversion: More than 676 units are grouped in 38 categories as follows:
1. Accel-Angular
2. Accel-Linear
3. Angle
4. Area
5. Capacitance
6. Clothing
7. Computer
8. Concentration-Molar
9. Cooking
10. Cooking-OvenTemperatures
11. Density
12. Energy & Work
13. Flow
14. Force
15. Force Per Unit
16. Fuel Consumption
17. Illumination
18. Inductance
19. Length
20. Moment of Inertia
21. Momentum
22. Number
23. Power
24. Pressure & Stress
25. Radiation
26. Radiation-Exposure
27. Resistance
28. Resistivity
29. SI Prefixes
30. Speed-Angular
31. Speed-Linear
32. Temperature
33. Time
34. Torque
35. Viscosity-Dyn.
36. Viscosity-Kine.
37. Volume
38. Weight & Mass

Scientific Constants: Includes 20 SI Prefixes, more than 20 commom Physics-Chemical Constants, 16 Electromagentic Spectrum Constants, 16 Density of Gases at STP and more than 26 Mathmatical Constants.
1. Common Physico-Chemical Constants
2. Mathmatical Contants
3. SI Prefixes
4. Density of Gases at STP
5. Electromagentic Spectrum

Chemical Elements: Each chemical element has following info:
1. Name
2. Symbol
3. Atomic Number
4. Atomic Weight
5. Atomic Volume
6. Density @293K
7. Classification
8. Color
9. Discovered
10. State
11. Melting Point
12. Boiling Point
13. Crystal Structure
14. Heat of Fusion
15. Heat of Vaporization
16. Electron Configuration