Free Tools
Pregnancy Caffeine Calculator (200 mg Limit)
Tap your drinks to total today's caffeine and compare it to the 200 mg daily limit recommended in pregnancy.
Want this in your pocket? Get the iOS app:
How this works
Tap any drink tile to add it to your day — coffee, espresso, black or green tea, cola, energy drinks, dark chocolate, or decaf. Each tap adds one serving; use the minus button to remove one. The calculator updates instantly as you go, no submit button needed.
Every drink carries a fixed caffeine value per serving: an 8 oz coffee counts 95 mg, a single espresso shot 63 mg, an 8 oz black tea 47 mg, an 8 oz green tea 28 mg, a 12 oz cola 34 mg, an 8 oz energy drink 80 mg, 1 oz of dark chocolate 12 mg, and an 8 oz decaf 5 mg.
Your running total is compared against 200 mg — the daily caffeine limit that major health organizations, including ACOG and the WHO, recommend during pregnancy to reduce risks of low birth weight and miscarriage. The progress bar stays green while you have room, turns orange once you pass 75% of the limit, and red if you exceed it.
Below the total you'll see how many milligrams you have left for the day, a per-drink breakdown, and a plain-language recommendation that changes as your intake climbs — the same logic used in the ProbaBaby iOS app.
The math behind it
The engine is a straightforward sum: totalMg = Σ (quantity × mgPerUnit) across every drink you've added. The per-serving values are fixed constants — Coffee (8 oz) = 95 mg, Espresso (1 shot) = 63 mg, Black Tea (8 oz) = 47 mg, Green Tea (8 oz) = 28 mg, Cola (12 oz) = 34 mg, Energy Drink (8 oz) = 80 mg, Dark Chocolate (1 oz) = 12 mg, Decaf Coffee (8 oz) = 5 mg.
The daily limit is fixed at 200 mg. Your remaining allowance is remaining = max(0, 200 − totalMg), and the progress percentage is percentage = min(totalMg ÷ 200 × 100, 100) — capped at 100% for display even when you're over.
You are flagged over the limit only when totalMg is strictly greater than 200 — hitting exactly 200 mg still counts as within the limit. Two 8 oz coffees, for example, total 190 mg: that's 95% of the limit, so the bar shows orange but you're still within it.
The recommendation text follows the capped percentage: over 200 mg you're advised to reduce intake; above 75% (over 150 mg) you're approaching the limit; above 50% (over 100 mg) you've used about half your allowance; otherwise your intake is within safe limits.
Frequently asked questions
Major health organizations — including ACOG and the WHO — recommend limiting caffeine to 200 mg per day during pregnancy to reduce risks of low birth weight and miscarriage. This calculator tracks your daily total against that 200 mg limit.
This calculator uses 95 mg for an 8 oz cup of brewed coffee, 63 mg for a single espresso shot, and 5 mg for an 8 oz decaf. One regular coffee is therefore roughly 48% of the 200 mg daily pregnancy limit.
Yes. The calculator counts 47 mg for an 8 oz black tea, 28 mg for an 8 oz green tea, 34 mg for a 12 oz cola, 80 mg for an 8 oz energy drink, and 12 mg for 1 oz of dark chocolate — all of it adds to the same 200 mg daily total.
No. The calculator flags you as over the limit only when your total strictly exceeds 200 mg. A total of exactly 200 mg is still shown as within the limit, with 0 mg remaining.
Within the 200 mg guideline, yes. One 8 oz coffee is 95 mg — about 48% of the daily limit — and two total 190 mg, which is 95% of the limit but still within it. The calculator warns you as you approach the limit so you can plan the rest of your day.