Converts quantities expressed in various scales to their
equivalents in other scales.
Handles multiplicative scale changes as well as nonlinear conversions
such as Fahrenheit to Celsius or wire gauge.
Comes with an annotated, extendable database defining 7000+ units,
including 170+ nonlinear units, and 125 prefixes, using 10 systems of
units including SI.
Also comes with updatable data for 180+ currencies, including crypto,
and precious metals prices, plus US CPI Consumer Price Index,
which may all be updated using units_cur.
To update currency exchange rates, commodity prices, and US BLS CPI,
run units_cur at the command line, in a profile or rc startup script, or
in a *daily* cron job.
Do *NOT* run units_cur more frequently than daily, as currency exchange
rates and commodity prices are updated only at most weekdays, and
excessive requests from units users could cause free access to accurate
online sources be stopped.
For more information see the project home pages:
https://gnu.org/software/units/
https://savannah.gnu.org/projects/units/
The following package has been upgraded in the Cygwin distribution:
- units 2.26
A native Windows binary distribution is also available:
https://ftpmirror.gnu.org/units/windows/units-2.26-setup.exe{,.sig}
For changes since the previous Cygwin release see below or read
/usr/share/doc/units/NEWS after installation:
2025-02-25 2.26
- The currency update script units_cur now generates four separate
files so that failures to reach a server can be independent. Crypto
pricing is now fetched from coingecko by default, but Packetizer is
available as an alternative using the new -c option. This change
fixes problems connecting to Packetizer.
- Suppress repeated unit values in display of unit definitions when
the duplicate values have different white space.
(e.g., "10 m/s^2 = 10 m / s^2"
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