Calculadora de Cafeína no Café
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
espresso: 63 mg/dose | filtrado: 95 mg/cup | solúvel: 60 mg/cup | limite: 400 mg/dia
About this calculator
The Coffee Caffeine Calculator estimates the total amount of caffeine consumed based on the type of coffee and the number of servings. It uses reference values: espresso (63 mg per shot), filtered coffee (95 mg per 240 ml cup), and instant coffee (60 mg per cup). The result is compared to the safe daily limit of 400 mg, recommended by health authorities for healthy adults. This tool helps monitor intake and avoid excesses that can cause insomnia, anxiety, or palpitations.
To use the calculator, select the coffee type (espresso, filtered, or instant) and enter the quantity consumed. The calculation multiplies the number of units by the corresponding caffeine content. The result shows total caffeine in mg and indicates whether you are within the safe limit. The tool is not a substitute for medical advice but serves as a guide for mindful consumption.
This calculator is ideal for those who want to control caffeine intake, whether for health reasons such as hypertension or pregnancy, or to improve sleep quality. It is also useful for healthcare professionals advising patients on moderate consumption. Remember that caffeine sensitivity varies from person to person, and the 400 mg limit is a general reference.
Precautions: the calculator uses average values and may not reflect specific brands or different brewing methods. Drinks like cappuccino or latte have variable caffeine content. Also, other caffeine sources (tea, sodas, energy drinks) should be considered to avoid exceeding the daily limit. Consult a doctor if you have health conditions that require caffeine restriction.
Frequently asked questions
Is the 400 mg limit safe for everyone?
No. The 400 mg limit is a reference for healthy adults. Pregnant women, people with hypertension, or caffeine sensitivity should consume less. Consult a doctor for personalized guidance.
How many cups of filtered coffee can I drink per day?
Based on the 400 mg limit, you can drink up to 4 cups of filtered coffee (95 mg each). But consider other caffeine sources throughout the day.
Does the calculator account for specialty coffees or different brewing methods?
No. The values are averages for common preparations. Specialty coffees or methods like French press may have different caffeine content. For accuracy, check the nutritional info of your beverage.
Can I use the calculator for decaf coffee?
Decaf coffee still contains a small amount of caffeine (about 2 to 5 mg per cup). The calculator does not have this option, but you can manually approximate values.
What should I do if I exceed the 400 mg limit?
Don't worry, the limit is a guideline. Reduce consumption in the following days and watch for symptoms like insomnia or jitteriness. If discomfort persists, consult a doctor.