How long do you want to stay up?

hours

???

cups of coffee

We calculate with 95 mg of caffeine per cup. Depending on your caffeine tolerance, this amount may vary. This value is calculated for someone with a normal tolerance. Be aware that the safe amount of daily consuption is about 400 mg (about 4 cups). Please do not take all your cups at once, it's a process! Take the cups intermittently.