Coffee Calculator

The FDA cites 400 mg per day as generally not associated with dangerous negative effects for most healthy adults — roughly 4-5 cups of coffee.

ACOG recommends limiting caffeine to under 200 mg per day during pregnancy, about one 12 oz cup of coffee.

Health authorities generally recommend teens limit caffeine to no more than about 100 mg per day, and that younger children avoid it or limit it further, roughly 2.5 mg per kg of body weight.

Yes. Conditions like heart problems, anxiety, hypertension, or sleep issues can mean a much lower safe threshold. Always check with a doctor if you have a relevant condition.