Feature Request: Unit conversions

[Razvan Ursan]

Originally reported on Google Code with ID 369 ``` It would be really useful to have a way of converting between various units on the fly (like volume units, length units, time units, and so on).

Some examples of syntax and possibilities:

• 2 km to meters
• 2km to cm
• 50cm3 to m3
• 25 kmph to mph
• 12:32:55 - 6:26:00 (time computations)
• (12 hours to minutes) to seconds

```

Reported by `ursanrazvan` on 2010-12-29 12:45:12

[Former user]

Reported by `helder.pereira.correia` on 2010-12-29 19:05:36 - Status changed: `Duplicate` - Merged into: #153