I want to be able to press a keyboard combination, start typing a mathematical expression that includes units and slightly advanced math (not just a four-function calculator), and get a result immediately, in units that I specify, that I can copy and paste.

- Currently I open Firefox and press Ctrl+K, type in the search box, and it usually gives me a result in the drop-down from Google Calculator. It doesn't always, though, so I press "=" at the end, wait for a result, remove the equals, wait for a result, realize it doesn't understand the way I typed a unit, open the result in a new tab, etc. it sucks.
- Wolfram Alpha is smarter, but very much slower, and the output is all images, not text, and I don't have a quick widget for it, if such a thing could even exist.
- GNU units has a ton of units, which is great, and I can define my own units, which is great, but they have to be written in specific, unintuitive ways, it doesn't handle much advanced math, and I'd need to open a terminal, start units, etc. I hate the command line.
- I wasted a lot of time trying to make front-ends for
`units`

in Deskbar and Launchy, but I'm not a real coder and I don't use either of those anymore.

Any other solutions or enhancements of these?

(Cross-platform is best)

The ideal unit-aware calculator would be able to handle all of these:

`7 nV/sqrt(Hz) ⋅ sqrt(20000 Hz - 20 Hz) → μV`

= 0.99 μV`sqrt(4*k*25 °C * 1 kΩ * (20 kHz - 20 Hz))`

= 0.57357 μV`3.5 billion kilowatt-hours per year`

= 399.5 MW`60 billion kWh per year`

= 6.849 GW`1/sqrt(2 mH * 2 nF)`

= 500 kHz`1/(2*pi*10 kΩ * 22 µF)`

= 0.7234 Hz`1/(2·π·100 Hz·30pF) → ohm`

= 53.05 MΩ`−10 dBV + 4 dB + 10 dB − 12 dB → dBu`

= -5.782 dBu`94 dBSPL → Pa`

= 1.00237 Pa`54 inches + 2 feet → cm`

= 198.1 cm`12 V ÷ 141.5 µA`

= 84.8 kΩ`16 bit * 44.1 kHz * 2 → kbit/s`

= 1411 kbit/s`1 hundred V / 5 ohms`

= 20 A`furlong per fortnight → cm/minute`

= 0.9979`attoparsec/microfortnight → in/second`

= 1.004`1 ft / speed of sound`

= 0.89576 ms

`bc -l`

and`units`

couldn't do?`bc -l`

and`units`

together? I didn't know that was possible.`bc`

doesn't gain you anything if you do not plan to define your own functions . The trigonometric, exponential and logarithmic function are all already defined in`units`

(only Bessel functions are missing).4more comments