Making your coffee work

Unless you are more absent-minded than I am, or you have been on planet earth for less than 10 years, you have a good idea of how to make divisional calculations, and accurately guess
'How Long Will My Coffee Last?'
If you fall in the other side of the population, here's a no-brainer app to tell you how many cups of coffee your pantry holds howlongwillmycoffeelast.com

You can use this calculator to work out how long your coffee supply will last, or to calculate how much coffee you need to buy.
Adjust the sliders to reflect your situation and preferences, then see how many days your supply will last - calculated in front of your very eyes. 

OMG! I'd have never guessed what the name of your site stands for. Thanks for that blurb of explanation.