Caffeine still in you at bedtime
3 cups deep
Last cup by 10:30 to stay under 50 mg overnight.
59 mg still in you at bedtime, 23:00. 3 drinks today, 247 mg in total. Peak 151 mg at 13:40. 20 mg when you wake.
The chart needs JavaScript. The numbers above are for the example day.
Your body
How fast caffeine peaks and clears differs from person to person. Set yours.
Most healthy adults fall between 2 and 8 h, the shaded stretch, and the average is about 4 h. Pregnancy can stretch it toward 16 h.
Caffeine peaks 30 to 120 minutes after you drink it, not at the sip.
Today
Every drink on the chart, with what is in it.
| Drink | Time | Serving | Caffeine mg | Energy kcal | Protein g | Carbs g | Sugar g | Fat g | Source |
|---|---|---|---|---|---|---|---|---|---|
| Filter coffee | 07:45 | 200 ml | 80 | 2 | 0.2 | 0.0 | 0.0 | <0.1 | 1 |
| Double espresso | 13:00 | 2 shots, 60 ml | 127 | 5 | 0.1 | 1.0 | 0.0 | 0.1 | 2 |
| Black tea | 16:30 | 200 ml | 40 | 2 | 0.0 | 0.6 | 0.0 | 0.0 | 34 |
| Total | 247 | 9 | 0.3 | 1.6 | 0.0 | 0.1 | |||
- Protein
- 0.2 g
- Carbs
- 0.0 g
- Sugar
- 0.0 g
- Fat
- <0.1 g
Source 1
- Protein
- 0.1 g
- Carbs
- 1.0 g
- Sugar
- 0.0 g
- Fat
- 0.1 g
Source 2
- Total247 mg · 9 kcal
- 1USDA FoodData Central (SR Legacy): Beverages, coffee, brewed, prepared with tap water
- 2USDA FoodData Central (SR Legacy): Beverages, coffee, brewed, espresso, restaurant-prepared
- 3USDA FoodData Central (SR Legacy): Beverages, tea, black, brewed, prepared with tap water
- 4U.S. Food and Drug Administration: Spilling the Beans: How Much Caffeine is Too Much?
Worth knowing
- 4 his the average caffeine half-life for healthy adults. Most people fall between 2 and 8 hours.
- 30–120 minis how long caffeine takes to peak after you drink it, not the moment you sip.
- 100 mgnear bedtime can change sleep in some adults.