insect

A fast, repl-style scientific calculator for the web and for the terminal.

• Web version
• Terminal version

Features

• Evaluation of mathematical expressions:

  1920/16*9
  2^32
  sqrt(1.4^2 + 1.5^2) * cos(pi/3)^2
  

  Supported functions: acos, acosh, asin, asinh, atan, atanh, ceil, cos, cosh, exp, floor, ln, log, log10, round, sin, sinh, sqrt, tan, tanh.

• Parsing and handling of physical units:

  2min + 30s
  40kg * 9.8m/s² * 150cm
  sin(30°)
  

• Explicit unit conversions

  60mph -> m/s
  500km/day -> km/h
  1mrad -> °
  52weeks -> days
  5in + 2ft -> cm
  atan(30cm / 2m) -> °
  6Mbit/s * 1.5h -> Gb
  

• Variable assigments:

  r = 6000km
  vol = 4/3 * pi * r³
  density = 5g/cm³
  vol * density -> kg
  

  grav = 9.81m/s²
  L = 20cm
  2pi*sqrt(L/grav) -> ms
  

  Predefined constants: speed of light (c), Plancks constant (hbar), ...

  You can use ans (answer) to refer the the result of the last calculation.

• Commands:

  help, ?
  list, ls
  reset
  

Install

In addition to the web interface, there is also a command line version which can by installed via npm:

npm install -g insect

Build

bower install
npm install
pulp -w browserify --skip-entry-point -m Insect --standalone Insect -O -t insect.js