Pregnancy Caffeine Calculator
Tally your real day in mg against the 200 mg ACOG/NHS pregnancy line — chai, filter coffee and cola included.
Caffeine clears at half speed in pregnancy and crosses the placenta freely, hence the 200 mg line — about one decent filter coffee plus a chai. The commonly missed sources: chai at 3–4 cups quietly reaches 160 mg, and 'decaf' still carries ~3–5 mg a cup. Guidance is a population line, not a panic threshold for one over-budget day.
Formula
For general information only. Pregnancy and infant care decisions must be guided by your treating clinician or midwife — always defer to their assessment.
Tally your real day in mg against the 200 mg ACOG/NHS pregnancy line — chai, filter coffee and cola included. The Pregnancy Caffeine Calculator is a free, private caffeine pregnancy tool — every result computes instantly in your browser with no sign-up and no data upload.
About Pregnancy Caffeine Calculator
Caffeine clears at half speed in pregnancy and crosses the placenta freely, hence the 200 mg line — about one decent filter coffee plus a chai. It applies Σ servings × typical caffeine content. Use the Pregnancy Caffeine Calculator to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Pregnancy Caffeine Calculator
- 1Enter your details in the Pregnancy Caffeine Calculator input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Pregnancy Caffeine Calculator?
- ✓Instant caffeine pregnancy result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (ACOG Committee Opinion 462 — moderate caffeine in pregnancy)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Pregnancy Caffeine Calculator work?+
Caffeine clears at half speed in pregnancy and crosses the placenta freely, hence the 200 mg line — about one decent filter coffee plus a chai. The calculation uses the formula: Σ servings × typical caffeine content. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Pregnancy Caffeine Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources, including ACOG Committee Opinion 462 — moderate caffeine in pregnancy; NHS — caffeine in pregnancy guidance. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Pregnancy Caffeine Calculator free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is informational only. Always defer to your treating clinician or midwife for pregnancy and infant care decisions.
What can I use the Pregnancy Caffeine Calculator for?+
It's commonly used for caffeine pregnancy, 200mg caffeine, coffee while pregnant. Tally your real day in mg against the 200 mg ACOG/NHS pregnancy line — chai, filter coffee and cola included.
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