Caffeine Calculator (Tea, Coffee & Energy Drinks)
Add up the caffeine from your daily chai, coffee, cola and energy drinks and compare it with safe limits.
Result
How to use
- 1
Choose whose limit to compare with.
- 2
Move the sliders to the number of cups, cans or servings you have in a typical day.
- 3
See your total caffeine, how it compares with the limit and where it comes from.
Questions
How much caffeine is safe?
The US FDA says up to 400 mg a day is generally not linked to harmful effects in healthy adults. During pregnancy, doctors (ACOG) advise staying below 200 mg a day. Children and teenagers should have much less — Health Canada suggests no more than 2.5 mg per kg of body weight.
How much caffeine is in Indian chai and filter coffee?
It varies a lot with how strong it is brewed. A typical cup of milky chai has about 30–50 mg and a tumbler of filter coffee roughly 60–100 mg. The figures used here are middle values; check labels on packaged drinks.
What do Indian rules say about energy drinks?
FSSAI limits caffeinated beverages to 145–300 mg of caffeine per litre (up to 75 mg in a 250 ml can) and requires labels warning that they are not recommended for children, pregnant or breastfeeding women and people sensitive to caffeine.
About this Caffeine tool
Caffeine Calculator (Tea, Coffee & Energy Drinks) — Add up the caffeine from your daily chai, coffee, cola and energy drinks and compare it with safe limits. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Choose whose limit to compare with.
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Results are estimates to help you plan. They are not financial, tax or medical advice.