Pregnancy weight gain calculator
Pregnancy weight gain calculator
The weight gained since before pregnancy and the week you are in, compared with the range your own clinician marked — no target is published on this page.
How this is calculated
Gain = weight now - weight before pregnancy. The week is completed weeks since the first day of the last period. The gain is compared only with the lower and upper ends you type; the page holds no target of its own.
- There is no single weight-gain target that fits every pregnancy, and this page does not publish one. A range belongs to your own record and your clinician, which is why the fields are blank until you fill them.
- One weighing is a point, not a trend. Weight also moves with the time of day, clothing, hydration and the scale, so a comparison with a range at one visit is a conversation rather than a verdict.
- This page is arithmetic, not antenatal care. It does not examine you or your baby, does not read a result as normal or otherwise, and does not replace an appointment. A dating scan, a growth chart and a clinician's advice take precedence over every figure here.
Weight gain in pregnancy is compared here with the range your own clinician marked, not with a target this page would have to choose for you. The gain and the week are arithmetic; the range is yours to enter.
No target on this page
The page subtracts the pre-pregnancy weight from the current one and counts the completed weeks from the first day of the last period. It then compares the gain with the lower and upper ends you type from your own chart. Until both ends are entered, it offers no comparison at all, because a weight-gain target belongs to a person and a clinician rather than to a general page.
A single weighing is a point, not a trend. Weight moves with the time of day, clothing, hydration and the scale, and a comparison at one visit is a conversation with a clinician rather than a verdict. The page says that beside the answer instead of colouring the number.
Questions readers ask
Why is the range blank?
Because there is no range that applies to every pregnancy, and the one that applies to yours is on your chart. The field stays blank until you fill it from that record.
Why does the page not calculate a BMI?
Because a BMI at one point in pregnancy is not the figure a weight-gain range is set from, and the calculation would imply a judgement the page is not making. The arithmetic shown is the gain and the week; everything else belongs with your clinician.
More in Pregnancy and baby
Pregnancy and baby
A due date from a period or an IVF transfer, weeks, trimesters and calendar months, a feeding log, baby age and the arithmetic between two weighings — with every page saying what it is not.
- Pregnancy due date calculator An estimated due date counted 280 days from the first day of your last period, adjusted for a cycle that is not 28 days, with the convention printed.
- Pregnancy week calculator How many weeks and days pregnant you are today, counted from the first day of your last period, and how many days are left to the estimated due date.
- Pregnancy month calculator The pregnancy month you are in and the calendar months completed since the first day of your last period — because a pregnancy month is not four weeks.
- Conception date calculator An estimated conception date worked back 266 days from a due date, or forward from the last period — a single arithmetic point, not a measurement.
- Ovulation calculator The estimated ovulation day in the current or next cycle and the date the next period is due, from your own cycle length — with the warning that this is not a contraceptive method.
- Fertility window calculator A dated list of the estimated fertile window for the next few cycles, using five days before to one day after the estimated ovulation — a convention, not a measurement, and never a contraceptive.
- IVF due date calculator A due date from an embryo-transfer date, allowing for the age of the embryo at transfer — 263 days for a day-3 embryo, 261 for a day-5 blastocyst.
- Trimester calculator The trimester you are in, the day the next one begins and the days between, on a stated boundary convention — first ends at week 13, second at week 27.
- Baby age calculator A baby's age in calendar months and days, in weeks and days, and in total days, counted from the date of birth to any date you choose.
- Baby growth calculator The change between two weighings: grams gained a day and a week, and the number of days between them — not a percentile and not a growth chart.
- Baby feeding schedule calculator A printable layout of feed times from a start time and a gap you supply — a way to write down times, not a schedule to impose on a baby.
- Breastfeeding time tracker A pair of timers for a feeding session, the time on each side, the last session and a log you can read back — kept in this browser tab and nowhere else.
- Pregnancy weight gain calculator The weight gained since before pregnancy and the week you are in, compared with the range your own clinician marked — no target is published on this page.
- Gestational age calculator The gestational age on any date, worked back from a due date you have been given rather than forward from a period.
- Pregnancy milestone calculator A dated sheet of the trimester boundaries, the halfway point and the due date, counted from the first day of your last period and printed in order.