Symptom-timeline tool
STD Incubation Periods: When Do Symptoms Appear?
Symptoms can show up days, weeks, or months after exposure, or never. Pick an infection and your exposure date to see the typical symptom-onset window. Just remember: no symptoms doesn't mean no infection. Everything runs in your browser.
STD incubation period calculator
No symptoms doesn't mean no infection. Many STIs are silent: the only way to know is to test, at the right time. Symptom timing and testing timing are different.
Incubation ranges are typical estimates from CDC/clinical sources and vary by person, not a diagnosis. If you have symptoms now, see a provider promptly.
Don't mix these up
Incubation period vs. testing window
Incubation period
Time from exposure until symptoms might appear, what this tool shows. Many infections never cause symptoms at all.
Testing window
Time from exposure until a test can reliably detect the infection, often sooner than symptoms. Use the test-window calculator to time your test.
At a glance
Typical symptom-onset windows
| Infection | Symptoms typically appear | Often silent? |
|---|---|---|
| Gonorrhea | 1–14 days (men often 2–7) | Yes, esp. in women/throat |
| Chlamydia | 7–21 days | Yes: most people |
| Genital herpes | 2–12 days (first outbreak) | Yes: many never notice |
| Syphilis | 10–90 days (painless sore) | Yes: sore is easy to miss |
| HIV | 2–4 weeks (flu-like) | Sometimes: no acute illness |
| Trichomoniasis | 5–28 days | Yes: most people |
| HPV / genital warts | 1–8 months (if warts appear) | Yes: most HPV |
| Hepatitis B | 2–5 months (avg ~3 mo) | Yes: often |
| Hepatitis C | 2–12 weeks (if symptomatic) | Yes: usually |
Ranges are typical estimates and vary by individual. Source: CDC and clinical references.
Next steps
The tools that tell you what to do
Sources
Where these ranges come from
Incubation ranges are drawn from the CDC's STI and viral-hepatitis references. They're typical estimates that vary by person, not a diagnosis.
Medically Reviewed & Fact-Checked · Updated
Reviewed by EasySTD Editorial Team
Compiled and checked by EasySTD's editorial team against CDC and public-health sources. This is educational information, not a substitute for advice from a licensed clinician. Our editorial guidelines →
3 Sources
Data & references
- CDC: Sexually Transmitted Infectionshttps://www.cdc.gov/sti/
- CDC: Hepatitis B clinical overview (incubation)https://www.cdc.gov/hepatitis-b/hcp/clinical-overview/index.html
- CDC: Genital HPV infectionhttps://www.cdc.gov/sti/about/about-genital-hpv-infection.html
EasySTD is an information and comparison directory, not a healthcare provider. These are educational estimates, not a diagnosis or medical advice, and do not create a doctor-patient relationship. Only testing can tell you your status.
Good to Know
STD incubation, frequently asked questions
Incubation vs. testing window, silent infections, and when to test.
Is the incubation period the same as the testing window?
No: and confusing them is a common, costly mistake. The incubation period is how long until symptoms might appear. The testing window (or window period) is how long until a test can reliably detect the infection. They're often different: hepatitis B symptoms can take about 90 days, but a test can pick it up in roughly 6 weeks; HIV symptoms appear around 2–4 weeks, but a 4th-generation test is reliable by about 45 days. Use this tool for symptom timing and our test-window calculator for when to actually test.
I have no symptoms, am I in the clear?
No. Most STIs are silent much or all of the time: a large share of chlamydia, gonorrhea, trichomoniasis, and HPV infections cause no symptoms at all, and you can still pass them on. "No symptoms" is not the same as "no infection." If you've had a possible exposure, the only way to know is to test at the right time, whether or not you ever feel anything.
How soon do STD symptoms usually appear?
It varies a lot by infection. Gonorrhea and herpes can show within a few days to two weeks; chlamydia and trichomoniasis over a couple of weeks; syphilis as a painless sore anywhere from about 10 days to 3 months; HIV as a flu-like illness around 2–4 weeks; and hepatitis B or genital warts can take one to several months. Any of these can also cause no symptoms.
Should I wait for symptoms before testing?
No. Waiting for symptoms means many infections are missed entirely, and even when symptoms do come they often arrive after the point where you could have caught and treated the infection early. Test based on the exposure date and the testing window, not on whether you feel sick. If you do develop symptoms, a sore, unusual discharge, burning, or a rash, see a provider promptly rather than waiting.
Is what I enter private?
Yes. This tool runs entirely in your browser: the infection and date you enter are never sent to a server, saved, or shared. It's educational and can't diagnose you; only a test can.
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