Calculators
Quick calculators
What's in your cup, what's still in you at bedtime, and when to have the last one. A minute each.
The cutoff clock
Your drinks and bedtime in: what's still in you when you fall asleep, and the latest time for your last cup.
Caffeine in your drink
Guess first, then see the milligrams to scale against a cup of coffee, with the source for each.
How much is too much?
Today's drinks against the line for adults, pregnancy or teens, in cups.
Your half-life
The pill, pregnancy or smoking in: how much longer caffeine lasts in you, and how far your cutoff moves.
The step-down planner
Your milligrams a day in: a dated plan that cuts a quarter every 3 days, with the headache window.
The pre-workout window
Your weight, session and bedtime in: the dose for your weight and the latest start for a full scoop.
With Gyroscope One, you see the milligrams and the time of your last cup, found in your drinks, next to your sleep. Open Gyroscope
