CalDims is a flexible and easy to use calculation tool that has support for units.
The calculator's features
- Support for user defined basic units and derrived units
- user defined functions
- built-in feature to simplify units
- easy unit-conversion
> # A bird is moving 1 meter per second, how far will it be in 2 hours? > 1m/s * 2h | m 7200 m > # A 60 Watt electric light is burning 2 hours a day. How much energy is consumed in one week? > 60 W * 2 h / d * 7 d | J 3024000 J > # What's that in Watt hours? > 60 W * 2 h / d * 7 d | W h 840 W h > #How much is it in a year (we derrive `year` first) > year := 265 d ok. > 60 W * 2 h / d * 1 year | W h 31799.999999999996 W h > # Bits and bytes are not defined. We do so: > \u bit ok, but an object has changed > byte := 8 bit ok, but an object has changed > kbyte := 1024 byte ok. > mbyte := 1024 kbyte ok. > 2 mbyte | - 16777216 bit > 2 mbyte | kbyte 2048 kbyte
Sources are availables at HackageDB: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims