SICKO MATH #005 · September 4, 2026

USER SUBMITTED QUESTION

How much semen could vaginal sex produce in the U.S. each day?

Daily U.S. semen-equivalent volume

THE DISGUSTING NUMBER

10183.6 gallons per day (38549 liters per day) under the stated semen-equivalent scenario.

Answer basis: 2011–2013 U.S. DAY

WHAT THAT MEANS IN REGULAR ENGLISH

No lab coat required.

Start with 60.9 million U.S. women aged 15–44. Apply the survey shares who had ever had vaginal sex and who had it during the past 12 months, then apply 7.51 acts per 4 weeks. At one 3.0-milliliter ejaculation per modeled act, the scenario produces about 10183.6 gallons (10,184 U.S. gal (38549 liters)) per day.

HOW WE DID THE MATH

60.9 million × 87.7 percent × 89.7 percent × 7.51 acts per 4 weeks gives about 12849648 modeled acts per day after converting 4 weeks to 28 days. Multiplying by 0.1 fl oz (3.0 milliliters) and converting at 128 fl oz (3.785411784 liters) per U.S. gallon gives 10183.6 gallons per day, equivalent to 10,184 U.S. gal (38549 liters) per day.

60900000 × 0.877 × 0.897 × 7.51 × 3.0 ÷ 28 ÷ 3785.411784 = 10183.6 gallons per day

THE INPUTS · U.S. FIRST

female_population
60900000 dimensionless
ever_vaginal_rate
87.7 dimensionless
past_year_rate
89.7 dimensionless
acts_per_window
7.51 dimensionless
window_days
28 day
semen_volume
0.1 fl ozMetric source: 3.0 milliliter
milliliters_per_gallon
128 fl oz/gallonMetric source: 3785.411784 milliliter / gallon
result
10183.6 gallons per day (38549 liters per day) under the stated semen-equivalent scenario.

MORE SOURCE-BACKED FACTS

The rabbit hole continues.

No ancillary fact is shown without a linked source.

ASSUMPTIONS AND LIMITATIONS

Evidence mode: SOURCED MODEL. Scope adjustment: The submission asked about all people and all sex without defining geography, age, sex act, or whether ejaculation occurred. The calculation is narrowed to the United States in 2011–2013, women aged 15–44, and reported vaginal sex with male partners. It estimates semen-equivalent volume only under the explicit scenario that every modeled vaginal-sex act included one ejaculation of the fertile-population median volume. It does not cover oral sex, anal sex, same-sex activity, masturbation, people outside the age range, or ejaculation-free acts. Uncertainty: This is not a measured semen total. Sexual behavior is self-reported, the activity estimates apply to specific survey subpopulations, and the 3.0-milliliter median comes from fertile men after 2–7 days of abstinence rather than from ejaculations during typical partnered sex. Assuming ejaculation in every modeled act likely overstates some activity, while excluded sexual activity makes the direction of total error uncertain. The model applies the 87.7 percent ever-vaginal-sex share, the 89.7 percent past-year activity share, and the 7.51 acts-per-4-weeks mean sequentially to 60.9 million U.S. women aged 15–44. Each resulting act is assigned one 3.0-milliliter ejaculation. Four weeks are normalized to 28 days, and 128 fl oz (3.785411784 liters) are treated as one U.S. gallon.

See the publication copy
If every modeled vaginal-sex act involving U.S. women aged 15–44 ended in one median 3.0-milliliter ejaculation, the daily total would be about 10183.6 gallons (10,184 U.S. gal (38549 liters)). This is a 2011–2013 semen-equivalent model, not a measured national total.

SOURCES

Changes in Sexual Behaviors with Opposite-Sex Partners and Sexually Transmitted Infection Outcomes Among Females and Males Ages 15–44 Years in the USA: National Survey of Family Growth, 2008–2019 ↗

Archives of Sexual Behavior / Europe PMC · 2022-12-08 · retrieved 2026-09-03

Ever had vaginal sex with male sex partner | 87.1% | 87.7% | 87.3% | 86.5% | 86.2% ... Vaginal sex with male sex partner(s) in past 12 months | 91.4% | 89.7% | 90.0% | 91.5% | 89.3% ... Number of vaginal sex acts in past 4 weeks | 7.38 | 7.51 | 7.21 | 7.07 | 6.93

Used as: For female respondents in 2011–2013, 87.7 percent had ever had vaginal sex with a male partner; among those ever sexually active, 89.7 percent reported it in the past year; the applicable group averaged 7.51 vaginal-sex acts in the past 4 weeks.

VERIFICATION RECEIPT

PASS · 94/100

evidence_present — 4 linked source claim(s)

source_excerpts — Every excerpt matched its retrieved source

question_led — Card question is explicit

public_explanation — Plain-English summary, walkthrough, and SEO description are present

search_metadata — Unique crawl-title inputs, clean slug, useful description, and distinct keywords are ready

sourced_related_facts — 0 optional related facts resolve to linked evidence

source_quality — All sources are tier 1-6

deterministic_math — replayed 10183.55374247178599684942492903699377293 gallon / day; stored 10183.55374247178599684942492903699377293 gallon / day

final_statistic_math — display 10183.6; replay rounds to 10183.6

assumptions_disclosed — Assumptions are explicit

evidence_mode_disclosed — sourced_model with scope and uncertainty disclosure

copy_numbers_locked — All copy numbers are locked

duplicate_check — highest similarity 0.00

confidence_gate — 94/100; sourced_model threshold 90