Water Intake Calculator
Age, Sex
Daily water needs from EFSA reference values, including pregnancy and breastfeeding.
Caffeine Limit Calculator
The EFSA safe daily caffeine level for your age, weight and pregnancy status.
Your result will appear here
Enter your measurements, then press Calculate.
Methodology
EFSA scientific opinion on caffeine safety (2015)
Adults 400 mg/day (single dose 200 mg); pregnancy/breastfeeding 200 mg/day; children and adolescents 3 mg/kg/day
EFSA concluded that these intakes do not raise safety concerns for healthy people. A typical cup of brewed coffee contains roughly 80–100 mg, but content varies widely.
- Who it is for
- Healthy children over 3, adolescents and adults.
- Version
- 1.0.0
Worked example: how to calculate caffeine limit
Inputs
- Age
- 30 years
- Weight
- 70 kg
- Sex
- Male
Result
- Safe daily caffeine level
- 400 mg/day
- Single dose of no concern
- 200 mg
An illustration with sample values, worked out with the same method the tool above uses.
Limitations
- Some heart conditions, anxiety, sleep problems and medicines need lower limits.
References
- EFSA Panel on Dietetic Products, Nutrition and Allergies. Scientific Opinion on the safety of caffeine. EFSA Journal. 2015;13(5):4102. doi:10.2903/j.efsa.2015.4102
Continue with your measurements
Shared measurements carry over automatically, in this tab only.