Symptom Checker
Commercial use OK
380+ models
No watermark
No sign-up needed
Model:
+ GPT-5, Claude, Gemini
Not medical advice — consult a qualified professional
This tool provides general health information only and is NOT a substitute for diagnosis, treatment, or the clinical judgment of a licensed clinician. Always consult a doctor, nurse, or pharmacist for medical concerns.
Emergency?
Call 911 (US), 999 (UK), 112 (EU), or your local emergency number immediately.
Find a helpline in your country
General Health Information
Reminder — this is AI-generated general information, not a diagnosis. Always follow up with a licensed clinician, a pharmacist, or your nearest urgent care before starting, stopping, or changing any treatment.
When you need a real person
These are third-party services provided for convenience — Free.ai does not control or endorse their content.What this tool does (and what it doesn't)
What it can do
- Summarize common causes associated with your described symptoms
- Suggest when you should see a doctor vs wait
- Recommend general at-home care (rest, hydration, OTC)
- Point you to authoritative sources (CDC, WHO, Mayo Clinic)
What it cannot do
- Diagnose any condition — only licensed clinicians can
- Prescribe medications or adjust existing prescriptions
- Replace urgent care, the ER, or poison control
- See you in person, examine you, or run tests
How Free.ai compares to WebMD / Ada / K Health
| Feature | Free.ai | WebMD | Ada Health | K Health |
|---|---|---|---|---|
| Cost | Free | Free + ads | Free | $12+/mo |
| Scope | General info + AI Q&A | Articles + quiz | Structured triage | Telehealth visits |
| Conversational AI | — | Scripted | ||
| Sign-up required | No | No | Yes | Yes |
| Prescribes medications | — | — | — | |
| Languages | 99 | ~10 | 11 | English |
Advanced options
Result
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Check symptoms with free AI. Get possible conditions and when to see a doctor.
How to Use Symptom Checker
1
Enter your input
Type text, upload a file, or describe what you want. No account needed.
2
Click generate
Our AI processes your request in seconds using the best open-source models.
3
Download & share
Download, copy, or share your result. Free for personal and commercial use.
Use this tool via API
Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.
curl -X POST https://api.free.ai/v1/chat/ \
-H "Authorization: Bearer sk-free-..." \
-H "Content-Type: application/json" \
-d '{"model": "qwen7b", "messages": [{"role": "user", "content": "Suggest a 1500-calorie meal plan."}]}'Symptom Checker — FAQ
No — absolutely not. Free.ai provides general health information based on what you describe; it cannot diagnose, prescribe, or replace a clinician. For anything beyond general info, see a licensed doctor, nurse, or pharmacist. Emergencies: call 911 (US), 999 (UK), 112 (EU), or your local number.
WebMD hands you static articles and a rule-based quiz. Ada runs a scripted triage tree. Free.ai uses conversational AI on top of general medical knowledge, so you describe symptoms in your own words and get structured information (common causes, when to see a doctor, self-care, red flags). No login, no ads mining your data.
Everything useful: what you feel, when it started, how long it lasts, severity, what makes it better or worse, medications already tried, any recent exposures (travel, new medication, food). The more specific, the more relevant the general information. Avoid entering full identifying details — age range + overall health status is enough.
No. The AI is instructed NEVER to diagnose. It lists conditions commonly associated with the symptom pattern ranked by typical match, and strongly encourages professional follow-up. A diagnosis requires examination, history, and often tests — things only a clinician can do in person.
Your text is processed on our GPUs just long enough to generate the response, then deleted. It is NOT stored in a user-linked medical record, NOT shared with third parties, and NOT used for training. For extra privacy, avoid including your full name, date of birth, or specific identifying details — stick to general ranges.
Yes — describe symptoms in any of the 99 languages Free.ai supports (Spanish, French, German, Arabic, Mandarin, Hindi, Swahili, and more). The response returns in the language you used. Medical terminology accuracy is strongest for English, French, Spanish, and Mandarin.
Yes — select the appropriate age range (Child 0-12, Teen 13-17, Adult 18-44, Adult 45-64, Senior 65+). Children and seniors have different baseline physiology; the AI adjusts general information accordingly. That said, pediatric and geriatric concerns especially warrant a pediatrician or geriatrician — never rely solely on AI for vulnerable age groups.
Chest pain with sweating or radiating arm pain; sudden severe headache ("thunderclap"); one-sided weakness or numbness; difficulty breathing at rest; confusion or loss of consciousness; uncontrolled bleeding; severe abdominal pain; signs of anaphylaxis (swelling, wheezing). If any of these apply, stop reading and call emergency services. The AI will also flag these in its response.
No. It can help you decide whether a concern looks urgent, routine, or self-limiting — but it cannot examine you, order tests, prescribe, or deliver a treatment plan. Use it to prepare questions for your doctor visit or to decide if "urgent care vs wait-and-see" makes sense.
Not yet. Labs, MRIs, X-rays, and ECGs require clinical context only a licensed provider can give. Do NOT paste raw lab values expecting an interpretation. Bring your results to a doctor, or to a patient portal that offers Certified Clinician review.
Yes — your daily free token pool (2,500 guest, 10,000 signed-up) covers many symptom checks. Each check deducts ~300 tokens. No subscription, no credit card, no lock-in.
Linked at the top of the page. Key resources: findahelpline.com (worldwide), 988 Suicide and Crisis Lifeline (US), Samaritans 116 123 (UK), WHO health topics. We do NOT route your message to anyone — you reach these services directly.
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