Nuchal Translucency Calculator
Compare a nuchal translucency measurement with the median and 95th centile for the crown-rump length, from 45 to 84 mm, and see the NT multiple of the median.
Medical Reference
5 tools
Which Medical Reference tool do you need?
| Tool | What it answers |
|---|---|
| Menopause Calculator | Menopause is confirmed once 12 consecutive months pass without a period, so the date is your last period plus one year. |
| Morning Sickness Calculator | Pregnancy nausea usually starts around week 6, is worst between weeks 8 and 12, and for most people improves by weeks 16 to 20, all counted from the… |
| Nuchal Translucency Calculator | Nuchal translucency is judged against crown-rump length, because the normal NT grows as the fetus grows. |
| Perimenopause Calculator | Perimenopause is staged mainly by bleeding pattern. |
| Postmenopause Calculator | Menopause is dated retrospectively: it is the day 12 months after the final menstrual period, and everything after it is postmenopause. |
All tools
Postmenopause Calculator
Find the date menopause was confirmed from your last period, the years since, and your STRAW+10 postmenopause stage from +1a through +2.
Morning Sickness Calculator
Enter the first day of your last period to see your pregnancy week and the dates nausea usually starts (week 6), peaks (weeks 8–12) and eases (weeks 16–20).
Menopause Calculator
Find the date menopause is confirmed: 12 months after your last period. Shows days without a period, days left and whether your age is typical or early.
Perimenopause Calculator
Match your recent period pattern to the STRAW+10 stages, from late reproductive to postmenopause, and see how far you are from the average menopause age of 51.