Pregnancy Caffeine Calculator

The American College of Obstetricians and Gynecologists (ACOG) advises keeping caffeine moderate — under 200 milligrams a day. At that level, ACOG's review found caffeine does not appear to be a major contributing factor in miscarriage or preterm birth. In everyday terms, 200 mg is roughly one 12-ounce cup of brewed coffee, or about four cups of black tea — a couple of cups of tea plus a piece of chocolate only gets you about halfway there. The line isn't a cliff edge — it's the level below which the evidence is reassuring — but it's a sensible daily budget to aim for, counting all sources together: coffee, tea, soda, energy drinks, and chocolate.

No — and this matters, because a lot of pregnancy advice online overshoots into fear. ACOG's guidance is about moderation, not abstinence: under 200 mg a day is considered fine, and an 8-ounce cup of brewed coffee (~95–165 mg) usually fits comfortably inside that. If you love your morning coffee, keep it — just keep an eye on the rest of the day's caffeine, since tea, soda, chocolate, and especially energy drinks all count toward the same total. Swapping a second cup for decaf (~2–5 mg) is an easy way to stay under without giving anything up.

At moderate intakes, the evidence is reassuring: ACOG's Committee Opinion concludes that consuming under 200 mg of caffeine a day is not linked to an increased risk of miscarriage or preterm birth. For higher intakes, the research is genuinely mixed — some studies suggest a possible association and others don't, which is why ACOG describes the relationship between high caffeine intake and miscarriage as unsettled rather than proven. The practical takeaway is the 200 mg budget: it keeps you inside the range where the evidence is solidly reassuring, without requiring you to give up caffeine altogether.

Three reasons. First, their caffeine content varies enormously — roughly 80 to 160 mg per can, and sometimes far more — and labels don't always tell the whole story. Second, many contain 'energy blends' with guarana (which is extra caffeine that may not be counted on the label), plus other stimulant-type ingredients like taurine and ginseng that haven't been well studied in pregnancy. Third, they're often heavily sweetened. Because you can't reliably budget something that isn't reliably labeled, this tool flags energy drinks separately, and the safest move in pregnancy is to swap them out entirely and mention them to your provider.

Coffee is obvious; the rest add up quietly. Black tea carries about 47 mg per cup and green tea about 28 mg. A 12-ounce cola has around 33 mg — and diet cola is actually higher, around 46 mg. Chocolate counts too: roughly 20 mg per ounce of dark chocolate and about 6 mg per ounce of milk chocolate. Even decaf coffee isn't zero (about 2–5 mg per cup, which is negligible). Some over-the-counter pain relievers and cold remedies also contain caffeine — check the label and ask your provider or pharmacist before taking them, since medication caffeine counts toward the same daily total.

Yes. This calculator runs entirely in your browser. The drinks you log are added up on your own device and are never sent to a server, saved, or shared — close the tab and they're gone. We treat reproductive and pregnancy data as sensitive by default. The result is general educational information based on ACOG guidance and FDA caffeine-content data; it isn't medical advice, and your own provider is the right person to personalize it — especially if you have blood-pressure issues, arrhythmia, or trouble sleeping.