Free tools
Pregnancy Tools & Calculators
The complete suite: free, private pregnancy tools grounded in ACOG, CDC, and FDA guidance, from testing and dating to week-by-week tracking, safety lookups, and labor & birth. Trying to conceive? See the Fertility tools. Recovering after birth or caring for a newborn? See the Postpartum & Newborn tools. Every one runs entirely in your browser: nothing you enter is sent, saved, or shared.
Am I pregnant?
The two-week wait
Know when a test becomes reliable and what an early sign really means, without the guesswork.
When to Test for Pregnancy
Enter your ovulation date, last period, the sex date, or when your period is due — get the earliest day a sensitive test can turn positive, the most reliable day to test, and when to retest after a negative.
Open toolTwo-Week Wait Calculator
See how many DPO you are and what's really happening each day from ovulation to your expected period — plus the earliest day a test actually means something. Private, runs in your browser.
Open toolAm I Pregnant? Quiz
Six private questions about sex, contraception, your period, and early signs — turned into an honest testing plan: test now, test on a date, or watch the calendar. Never a verdict, and nothing leaves your browser.
Open toolHow late am I?
See how many days late you really are — measured against your own cycles, not a textbook 28 — plus when a test is reliable, what else delays periods, and when it's clinician time.
Open toolImplantation bleeding vs period
Spotting before your period is due — implantation or just an early period? Seven questions weigh your timing, flow, color, duration, clots, and cramps against the published pattern, then give you the exact day to test.
Open toolRead the result
Read your test
Our sweet spot: making sense of a faint line, a digital reading, or a confusing hCG number.
How to read a pregnancy test
Faint line, evaporation line, or a negative you don't trust? The one rule that resolves most confusion, plus an interactive reader that tells you what your exact result means and the next step.
Open toolWhen tests turn positive
Enter your ovulation or last-period date and your test's sensitivity to see the day-by-day chance a test shows positive if you're pregnant — from 8 DPO to three days past a missed period.
Open toolPregnancy Test Types
Strip, midstream, digital, early-detection, or blood test? Four quick questions match you to the right type — with a full comparison of sensitivity, cost, and when each becomes reliable.
Open toolLine Progression Tracker
Log how dark your at-home test line gets over a few days and read the trend in plain English — no photos, saved only on your device. Honest that a line isn't a lab: it tracks a trend, never viability, and lighter lines don't mean loss.
Open toolhCG Doubling Time
Enter two beta-hCG results and the hours between draws to see your doubling time, percent rise, and how the trend compares to published early-pregnancy ranges. Private, in-browser math — never a verdict; your provider interprets the trend with ultrasound.
Open toolDate the pregnancy
Date your pregnancy
Turn whichever date you know into a due date, how far along you are, and your trimester.
Due date calculator
Enter your last period, conception date, IVF transfer, or dating scan for your estimated due date, how far along you are today, your trimester, and your conception window, using ACOG's dating methods.
Open toolHow far along am I?
Enter your last period, due date, conception date, or an ultrasound and see your pregnancy today: exact weeks and days, trimester, percent complete, baby's size this week, and every key date ahead. Private — runs on your device.
Open toolDue date by ultrasound
Turn your dating scan into a due date — from the CRL in mm (Robinson–Fleming) or the weeks + days on the report — and see when ACOG says the ultrasound overrides your period date.
Open toolIVF due date calculator
Turn your embryo transfer (day-3 or day-5, fresh or frozen), egg retrieval, or IUI date into a due date, your weeks today, and milestone dates — the most precise dating there is, because conception day is known.
Open toolWhen did I conceive?
Work backward from your due date or forward from your last period to your likely conception window — plus the days sex could have led to it. A window, never a single day.
Open toolWeeks to Months
Turn your pregnancy weeks into months the honest way — a month is about 4.35 weeks — with your trimester, a full weeks 1–42 chart, and a reverse months-to-weeks mode.
Open toolWeek by week
Track the pregnancy
Follow your baby's development and keep every visit, test, and milestone on the calendar.
Pregnancy week by week
Every week from 4 to 42: how your baby is developing, their approximate size, what you may feel, and the ACOG care milestone to have on the calendar. Enter your due date or last period to jump straight to your week.
Open toolPregnancy tracker
Enter your due date or last period and see your whole pregnancy at a glance — week and day today, trimester, this week's milestones, what's next on the ACOG schedule, and your countdown to full term.
Open toolPrenatal schedule planner
Enter your due date or last period and get your whole prenatal calendar dated — every visit, screen, and vaccine, with what happens and why. Printable, private, runs in your browser.
Open toolKick counter
Tap for every movement and time how long your baby takes to reach 10 — then compare with their own baseline, session by session. Stays on your device; a real change means call your provider now.
Open toolReduced Fetal Movement
Baby moving less? Map the change against one rule: a real decrease is a same-day call to your maternity unit, and no movement means go in now — with the juice-trick and home-Doppler myths retired. Not a diagnosis.
Open toolFetal weight calculator
Turn the HC, AC, and FL on your ultrasound report into an estimated weight in grams and pounds, using the published Hadlock formula — with the honest ±15% band and typical ranges for 24–42 weeks.
Open toolHealth & safety
Healthy and safe
Everyday questions — food, exercise, medicines, screening — answered from ACOG, CDC, FDA, and USPSTF guidance, with clear red-flag gates.
Is it safe in pregnancy?
Search 79 everyday medicines, foods, activities, and beauty products, each with one plain verdict — generally OK, caution, or avoid — and the ACOG, FDA, CDC, or MotherToBaby guidance behind it.
Open toolPregnancy Weight Gain
See your IOM/NAM target range and the typical gain at your week — one baby or twins — and where you sit, gently, with no grades. Private, runs on your device.
Open toolPregnancy BMI Calculator
Your pre-pregnancy BMI — not your current weight — sets your pregnancy weight-gain range. Enter your height and starting weight, US or metric, and see which IOM/NAM band applies. Private: nothing leaves your device.
Open toolPregnancy caffeine calculator
Build your usual day — coffee, tea, soda, chocolate — and see your total against ACOG's 200 mg/day moderate line, with easy swaps to get under. Energy drinks flagged separately.
Open toolFish & Mercury Calculator
Which fish are safe in pregnancy — and how much? Build your week from the full FDA/EPA chart (all 62 species, three tiers) and check it against the 2–3-servings rule.
Open toolPregnancy water intake
Your daily fluid target inside ACOG's 8–12 cup range — sized to your weight, trimester, activity, and climate, with a glass-by-glass pacing plan and the dehydration signs to watch.
Open toolFolic acid calculator
Five quick questions match you to the published folic-acid recommendation — the standard 400 mcg a day, or the provider-prescribed higher dose some histories call for — plus when to start and how to get it.
Open toolExercise Safety Checker
Take a quick safety screen, then check any of 36 activities against ACOG guidance — safe, modify, or avoid, with the exact reason why.
Open toolMorning Sickness Quiz
Score the validated PUQE-24 index from three questions about your last 24 hours — see whether your nausea is mild, moderate, or severe, and the evidence-based next step for each. Private; nothing leaves your device.
Open toolPregnancy checklist
Enter your due date or last period and get the trimester-by-trimester to-do list with your real calendar windows — first visit, anatomy scan, glucose test, Tdap, GBS, car seat. Private and printable.
Open toolGenetic Screening Chooser
NIPT, NT scan, quad screen, CVS, amnio — five questions map which prenatal tests fit your dates and history, plus the questions to bring to your provider.
Open toolDown syndrome chance by age
Look up the published live-birth chance of Down syndrome (trisomy 21) at your age, 20 to 45, with trisomy 18 and 13 at key ages — then see why age is only a starting point and screening tells you far more.
Open toolMiscarriage Risk by Week
A reassurance-first look at how the general risk of miscarriage falls week by week through early pregnancy — and drops further once a heartbeat is confirmed. Broad population ranges, never a personal prediction.
Open toolFundal Height Calculator
Enter your fundal height in cm and your weeks to see whether it tracks with your dates or is measuring ahead or behind. A rough screen only — an ultrasound and your provider decide.
Open toolAmniotic Fluid Index (AFI)
Enter the AFI from your scan — or add up the four quadrant pockets — to see where it lands: below 5 cm (low), 5–24 cm (normal), above 24 cm (high). Educational; every result routes to your provider.
Open toolGlucose Test (GTT) Interpreter
Enter your 1-hour glucose challenge value, or the four 3-hour tolerance-test numbers, to read them against the published Carpenter-Coustan cutoffs. It explains rather than diagnoses.
Open toolNuchal Translucency (NT)
Enter the NT measurement from your first-trimester scan and see it in plain English — typical, borderline, or increased — with what usually follows. A screen, not a diagnosis; most increased-NT babies are healthy.
Open toolBiophysical Profile (BPP) Score
Add up the five components of a fetal BPP — breathing, movement, tone, fluid, and the non-stress test — for a total out of 10 (or 8 without the NST), and see whether it's reassuring, equivocal, or concerning.
Open toolGestational Diabetes Risk
Ten questions scoring the risk factors ACOG and the ADA actually use — and whether early screening is worth asking about. Everyone gets screened at 24–28 weeks regardless.
Open toolPreeclampsia risk quiz
Walk the USPSTF 2021 risk-factor lists in five private questions and see whether the low-dose-aspirin conversation fits your history — plus the warning signs every pregnancy should know.
Open toolPreeclampsia BP log
Log your home blood pressure and get an instant, color-coded read against ACOG's pregnancy thresholds — with symptom checks that override the numbers. Stays on your device, exportable for your provider.
Open toolNIPT Results Interpreter
Got an NIPT / cfDNA result? See what low-risk, high-risk, and no-call actually mean — why a positive is a screen and not a diagnosis, how the odds swing with the condition and your age, and the test that truly confirms. Not a diagnosis.
Open toolPregnancy Anemia Interpreter
Read your hemoglobin against the trimester-specific anemia cutoffs (the line moves because pregnancy dilutes your blood), add ferritin for iron, and see normal, mild, moderate, or severe. No doses — your provider treats the cause. Not a diagnosis.
Open toolPregnancy Thyroid (TSH) Interpreter
TSH runs lower in pregnancy, so a normal result isn't the usual range. Read yours against the pregnancy-adjusted ranges, with free T4 and TPO antibodies, for normal, subclinical, overt, or low. No doses. Not a diagnosis.
Open toolDo I Need RhoGAM?
Enter your blood-type Rh and the other parent's to see whether Rh incompatibility applies in pregnancy — and, per ACOG, when RhoGAM is recommended. Private and educational, not a diagnosis.
Open toolPregnancy vaccine schedule
Enter your due date or last period and get calendar dates for every shot — Tdap at 27–36 weeks, RSV if your window lands in season, flu, and the live vaccines to skip.
Open toolGroup B Strep Explained
Tested positive, still waiting, or just confused about GBS? Answer five quick questions and see what actually happens in labor — following ACOG and CDC guidance, all in your browser.
Open toolRound Ligament Pain Checker
That sharp, brief groin or lower-belly pain when you move — see whether it fits the common, harmless round-ligament pattern or the warning signs that mean call your provider. Educational, not a diagnosis.
Open toolPregnancy Carpal Tunnel Checker
Numbness, tingling, or pins-and-needles in the thumb and fingers, worse at night? See whether it fits pregnancy carpal tunnel — and the swelling red flags that are not carpal tunnel at all. Private, not a diagnosis.
Open toolPregnancy Sciatica & Pelvic Girdle Pain
Reads how your pregnancy back, leg, or pelvic pain maps to two common patterns — sciatica versus pelvic girdle pain — and flags the rare emergencies that need urgent care. Educational, not a diagnosis.
Open toolCholestasis of Pregnancy Checker
Intense itching, especially of the palms and soles with no rash, can signal cholestasis (ICP). This checker reads that pattern and, if it fits, points you to a same-day bile-acid test with your provider. Not a diagnosis.
Open toolPUPPP Rash Checker
The itchy bumpy rash that starts in belly stretch marks late in pregnancy and spares the navel — see whether your rash fits PUPPP/PEP, why itching without a rash is different, and the red flags. Not a diagnosis.
Open toolLabor & birth
Labor and birth
Time your contractions, tell true labor from false, and read the exam numbers your provider gives you — with the go-in-now red flags always in front.
Contraction timer
Tap start and stop to time labor contractions. Logs each contraction's length and how far apart they are (start-to-start), tracks your last-hour averages, and shows how close you are to the common 5-1-1 / 4-1-1 hospital pattern — while your provider's instructions always win. Log stays on your device.
Open toolAm I in Labor?
Real labor or false (Braxton-Hicks) labor? Compare your contractions and signs against ACOG's true-vs-false checklist for a lean read, a next step, and the go-in-now red flags.
Open toolBishop Score Calculator
Add up the five cervical-exam values your provider gave you — dilation, effacement, station, consistency, and position — to get the 0–13 Bishop score and see whether the cervix is favorable for a labor induction. Educational, private, not a diagnosis.
Open toolVBAC Candidacy
Weighing a vaginal birth after cesarean against a repeat cesarean? Get an honest candidacy read — good candidate, individualized, or not recommended — from the factors ACOG describes. Not a fabricated percentage; a conversation to have with your provider.
Open toolBirth Plan Builder
Build a clean, printable one-page birth plan to bring to your provider — labor, delivery, cesarean, and newborn preferences, every option framed evenly from unmedicated to epidural. Private, runs in your browser.
Open toolCord Blood Banking Guide
A balanced, unsponsored look at public donation vs private/family banking vs directed donation — and how delayed cord clamping competes for the same blood. Built around what ACOG and the AAP actually recommend.
Open toolApgar Score Calculator
The delivery room's 1- and 5-minute score, decoded: the five signs at 0–2 each, the published 7–10 / 4–6 / 0–3 bands, and the honest caveat that the score never predicts your child's future. Educational, private.
Open toolWhy trust these
Built to a clinical standard
The web is full of pregnancy calculators that hand you a date with no source and wrap it in ads. Ours are different by design. Each one is a transparent rules engine built directly on published guidance, chiefly the American College of Obstetricians and Gynecologists and the CDC, not a black box.
Every result is framed as an estimate with a clear next step, never as a diagnosis, and every tool links to the exact sources it uses and the date it was last reviewed. Because they run on your device, using them tells us nothing about you, which for reproductive health is a promise, not a footnote.
Medically Reviewed & Fact-Checked · Updated
Reviewed by EasySTD Editorial Team
Compiled and checked by EasySTD's editorial team against CDC and public-health sources. This is educational information, not a substitute for advice from a licensed clinician. Our editorial guidelines →
3 Sources
Data & references
- ACOG: Methods for estimating the due date (Committee Opinion 700)https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2017/05/methods-for-estimating-the-due-date
- ACOG: Women's health FAQs (pregnancy)https://www.acog.org/womens-health/faqs
- CDC: Before, during & after pregnancyhttps://www.cdc.gov/pregnancy/index.html
Good to Know
Pregnancy tools: frequently asked questions
Privacy, accuracy, and what these tools can and can't do.
Are these pregnancy tools free?
Yes. Every tool here is completely free, with no account, sign-up, or payment. EasySTD is an information and comparison directory: the tools are here to help you understand your options and find testing and care.
Is what I enter private?
Yes. Each calculator runs entirely in your browser. The dates and details you enter are never sent to a server, saved, or shared, and using a tool tells us nothing about you. Close the tab and everything is gone. In a post-Dobbs world we treat reproductive data as sensitive by default, so nothing you type here leaves your device.
Can these tools replace a doctor or a scan?
No. These are educational tools grounded in ACOG and CDC guidance. They give general estimates and clear next steps, not a diagnosis or medical advice. A pregnancy test, and for dating an early ultrasound read by your provider, is what confirms things. Use the results to have a better-informed conversation with a clinician.
Where does the medical information come from?
Every tool cites its sources, primarily the American College of Obstetricians and Gynecologists (ACOG), the CDC, and other published clinical guidance. Each page lists its references and shows when it was last reviewed.
Have a different question? Browse the full pregnancy FAQ library, every question we answer, in one place.