numb

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numb is a tool for working with numbers, units and dates.

examples:

$ numb
Enter `q` to quit
> 3735928559 >> 16 in hex
  0xdead
> 1920/1080 in rat
  16/9
> sin(pi/3)
  0.87
> 3 millilightsecond to mile
  558.85 mile
> 10 mile/hour to metre/sec
  4.47 metre/sec
> total_grains = 2^64 - 1
  18446744073709551615
> 3 GB / (15 Mbps) to minute
  26.67 minute
> time in London
  13:04
> today + 10 days
  05 Jun 2022
> today - {1999-09-09} to months
  272.54 month

install:

# build with Go >= 1.16
$ go install github.com/nkanaev/numb@latest

more:

doc/help.txt     manual, examples
doc/spec.txt     syntax, grammar
doc/dump.txt     various design notes
doc/todo.txt     todo list