Is it normal?
Find out where you stand.

Yes. Research from the Hurlburt lab suggests roughly 25 to 30 percent of people do not experience a continuous verbal inner voice. The experience of silent thought, whether visual, spatial, or simply non-verbal, is more common than the cultural assumption that everyone talks to themselves in their head. The inner monologue calculator shows where your experience sits against self-reported population data.

Yes. The clinical normal range for bowel frequency is 3 times a day to 3 times a week. About 50 percent of people have one bowel movement per day, but significant variation is normal and not a sign of a problem on its own. The bowel frequency calculator shows where your frequency sits on the population distribution.

Very common. Research consistently finds that over 90 percent of people experience unwanted intrusive thoughts that feel at odds with their values. The presence of intrusive thoughts is not, on its own, a clinical signal. Frequency, distress, and how much they interfere with daily life are what matter clinically. The intrusive thoughts calculator compares your experience to published norms.

The median is the more useful figure, because mean net worth is pulled dramatically upward by the very wealthy. For a 35-year-old in the US, the median net worth is approximately $36,000. For a 45-year-old it is around $135,000. For a 55-year-old it is around $247,000. These figures come from the Federal Reserve Survey of Consumer Finances. The net worth by age calculator shows your exact percentile within your age cohort.

Women cry on average 3 to 5 times per month; men cry around 1 to 2 times per month, according to data from Vingerhoets et al. (2000). But the range is large, some people cry weekly, others go months without. Crying frequency varies significantly by culture, age, and personality. The crying frequency calculator shows where your frequency sits relative to same-sex population data.

In the US, median annual earnings for a 35-year-old are approximately $52,000; for a 45-year-old, around $60,000. Earnings peak in the mid-50s. But the distribution is wide and regional variation is substantial. The salary percentile by age calculator uses Bureau of Labor Statistics data to show your exact income percentile within your age bracket.

Each calculator is built from a peer-reviewed study or official dataset, and the source is named on every page. You enter your number and the calculator maps it to the distribution from that study, showing your percentile: the percentage of the population that falls below your value. No accounts, no tracking of personal data. All calculations run in your browser. See the methodology page for full detail on how data sources are selected and verified.

Small clots are common and generally normal. The ACOG considers clots smaller than a 50p coin to be typical. Passing large, jelly-like clots regularly, especially with heavy flow, can indicate conditions like fibroids or hormonal imbalance and is worth discussing with a doctor. The period symptoms calculator shows how your flow and clot frequency compare to population data.

Yes, for a significant minority. Research suggests around 5 percent of people with cycles experience light spotting at ovulation, caused by the brief drop in oestrogen that triggers egg release. It typically lasts 1 to 2 days and is lighter than a period. The menstrual cycle calculator shows what is typical across cycle length, spotting, and symptom patterns.

Very normal. Self-directed speech, both spoken aloud and internal, is a well-documented cognitive tool. Research shows it improves task focus, emotional regulation, and working memory. What varies significantly is whether people experience a continuous verbal inner voice or something more visual and non-verbal. The inner monologue calculator shows where your internal experience sits against population data.

The American Academy of Dermatology puts normal daily hair loss at 50 to 100 strands. Because most people wash every few days, seeing 150 to 200 hairs in the shower after skipping a day is within normal range. Consistent shedding above 150 strands per day on non-wash days may indicate telogen effluvium or androgenic alopecia. The hair loss calculator shows how your shedding rate compares by age and sex.

The clinical normal range for adults is 60 to 100 beats per minute, but athletes often sit in the 40s or 50s. A consistently elevated resting HR above 80 bpm is associated with higher cardiovascular risk even within the normal range. Where you sit on the distribution matters more than whether you are inside the threshold. The resting heart rate calculator shows your exact percentile against age and sex norms from clinical population data.