Medical Calculators
Practical tools to help you understand IVF-related information
IVF Due Date Calculator
Estimate your due date from your transfer or retrieval date
Calculate your due date precisely from embryo transfer date. Supports Day 3, Day 5, and Day 6 blastocyst transfers. Automatically calculates current gestational age, days until due date, and displays pregnancy milestones.
Embryo transfer date, embryo type (D3/D5/D6)
Due date, current gestational age, days until due date
Transfer date + 261/263/260 days
All Calculators
Natural Pregnancy Due Date Calculator
Estimate your due date from last menstrual period (LMP), suitable for natural conception and IUI. Automatically shows current gestational age, pregnancy trimester, and provides zodiac and Chinese zodiac information.
First day of last menstrual period
Pregnancy Week Calculator
Calculate current gestational age and due date from last menstrual period or embryo transfer date. Supports both natural conception and IVF modes, shows pregnancy progress bar, weekly development, and tips.
LMP/transfer date, embryo type (optional)
IVF Timeline Calculator
Understand the timeline of each stage of the complete IVF treatment cycle, from ovarian stimulation to pregnancy test. Helps you plan work and life around your treatment schedule.
Expected start date
IVF Success Rate Calculator
Estimate IVF success rate based on age, medical history, and infertility causes. References CDC and SART official data to help you understand personal success probability and influencing factors.
Age, medical history, duration of infertility
BMI Calculator
Calculate Body Mass Index (BMI) to assess whether your weight is within a healthy range. BMI is an important factor affecting IVF success rates - being overweight or underweight may reduce success rates.
Height (cm), weight (kg)
IVF Cost Calculator
Combine published state- and city-level price ranges with add-ons such as PGT-A, ICSI and assisted hatching, then scale by retrieval cycle to get a total budget and an itemised breakdown for IVF in the USA.
Destination, egg retrieval cycles, add-ons, additional FETs, storage years
Ovulation Calculator
Calculate ovulation day and fertile window based on last menstrual period and cycle length. Shows ovulation calendar for the next 6 months to help you plan the best time to conceive.
First day of last menstrual period, cycle length
Egg Freezing Outcome Calculator
Estimate your chance of having a baby from frozen eggs based on age and number of eggs frozen. Based on three authoritative clinical datasets (Spring Fertility, Doyle, Cobo), shows probability of at least 1 child and 2+ children.
Age at time of freezing, number of eggs frozen
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✓ All calculators are built on authoritative medical guidelines from ACOG, ASRM, the CDC, and other leading bodies. Results are for reference only and do not constitute medical advice.
Medical Data Sources
Our calculators are built on data from leading medical institutions and clinical research, ensuring scientifically reliable results.
Due Date Calculation
ACOG states: "For IVF patients, the due date should be calculated from the embryo transfer date." Add 261 days after a Day 5 blastocyst transfer and 263 days after a Day 3 transfer. See ACOG Practice Bulletin.
Egg Freezing Success
Cobo et al. found: "Women under 35 who freeze 10–15 eggs can reach a 60–70% live-birth rate." Data from Cobo et al. (2018), Doyle et al. (2016) and Spring Fertility (13,533 thawed eggs).
BMI & Fertility
van der Steeg et al. confirmed: "BMI follows a U-shaped relationship with natural conception, with the highest rates at BMI 18.5–24.9." See van der Steeg et al. (2008) and the Sermondade et al. (2013) meta-analysis.
Frequently Asked Questions
Are these calculators accurate?
How is an IVF due date different from a natural pregnancy due date?
Where does the frozen egg data come from?
How does BMI affect IVF?
How Do Our IVF Calculators Work?
Due date calculation: An IVF due date is counted precisely from the embryo transfer date, making it more accurate than traditional LMP-based dating. Per ACOG guidance, add 261 days after a Day 5 blastocyst transfer or 263 days after a Day 3 transfer — because the fertilization date in IVF is known exactly, eliminating the uncertainty of ovulation timing.
Egg freezing success: The egg-freezing probability calculator is built on three authoritative clinical datasets: Spring Fertility internal data (13,533 thawed eggs), Doyle et al. (1,283 eggs), and Cobo et al. (1,513 eggs). These come from real clinical practice and carry strong reference value. Studies show women under 35 who freeze 10–15 eggs can reach a 60–70% live-birth rate.
BMI & fertility: BMI is a key marker of fertility potential. Research published in the New England Journal of Medicine found women with a BMI of 18.5–24.9 have the highest IVF success rates. Being over or under weight can affect ovulation and embryo implantation; each 1-unit rise in BMI is associated with roughly a 4% drop in natural conception rates.
All calculation results are for reference only — please consult your fertility specialist about your actual treatment plan. ProIVF is committed to providing accurate, reliable medical information to help you make informed family-building decisions.
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