| 1 | .\" @(#)units.1 6.1 (Berkeley) %G% |
| 2 | .\" |
| 3 | .TH UNITS 1 "" |
| 4 | .AT 3 |
| 5 | .if n .ds / / |
| 6 | .if t .ds / \z/\h'\w'*'u' |
| 7 | .SH NAME |
| 8 | units \- conversion program |
| 9 | .SH SYNOPSIS |
| 10 | .B units |
| 11 | .SH DESCRIPTION |
| 12 | .I Units |
| 13 | converts quantities expressed |
| 14 | in various standard scales to |
| 15 | their equivalents in other scales. |
| 16 | It works interactively in this fashion: |
| 17 | .PP |
| 18 | .I " You have:" |
| 19 | inch |
| 20 | .br |
| 21 | .I " You want:" |
| 22 | cm |
| 23 | .br |
| 24 | .I " * 2.54000e+00 |
| 25 | .br |
| 26 | .I " \*/ 3.93701e\-01 |
| 27 | .PP |
| 28 | A quantity is specified as a multiplicative combination of |
| 29 | units optionally preceded by a numeric multiplier. |
| 30 | Powers are indicated by suffixed positive integers, |
| 31 | division by the usual sign: |
| 32 | .PP |
| 33 | .I " You have:" |
| 34 | 15 pounds force/in2 |
| 35 | .br |
| 36 | .I " You want:" |
| 37 | atm |
| 38 | .br |
| 39 | .I " * 1.02069e+00" |
| 40 | .br |
| 41 | .I " \*/ 9.79730e\-01" |
| 42 | .PP |
| 43 | .I Units |
| 44 | only does multiplicative scale changes. |
| 45 | Thus it can convert Kelvin to Rankine, but not Centigrade to |
| 46 | Fahrenheit. |
| 47 | Most familiar units, |
| 48 | abbreviations, and metric prefixes are recognized, |
| 49 | together with a generous leavening of exotica |
| 50 | and a few constants of nature including: |
| 51 | .PP |
| 52 | .nf |
| 53 | pi ratio of circumference to diameter |
| 54 | c speed of light |
| 55 | e charge on an electron |
| 56 | g acceleration of gravity |
| 57 | force same as g |
| 58 | mole Avogadro's number |
| 59 | water pressure head per unit height of water |
| 60 | au astronomical unit |
| 61 | .PP |
| 62 | .fi |
| 63 | `Pound' is a unit of |
| 64 | mass. |
| 65 | Compound names are run together, e.g. `lightyear'. |
| 66 | British units that differ from their US counterparts |
| 67 | are prefixed thus: `brgallon'. |
| 68 | Currency is denoted `belgiumfranc', `britainpound', ... |
| 69 | .PP |
| 70 | For a complete list of units, `cat /usr/lib/units'. |
| 71 | .SH FILES |
| 72 | /usr/lib/units |
| 73 | .SH BUGS |
| 74 | Don't base your |
| 75 | financial plans on the currency conversions. |