COVID-19 Symptom Mapper

Compare. Understand.
Help us map the spread.

Thank you for joining more than 184,000 people who have chosen to help Imperial College, London and Healthily compare, understand and map the spread of Covid-19.

Answer the following questions and in two minutes we can give you a picture of how your symptoms compare to other people. Thanks again and we hope you stay safe and make a speedy recovery.

First of all, it's important to find out if you need urgent attention. Are you experiencing any of the following?

  • Severe shortness of breath - more than 25 breaths per minute
  • Pain or pressure in your chest
  • Cold clammy or pale and mottled skin
  • Feeling confused (if that’s new)
  • Coughing up blood
  • Blue lips or face
  • Sudden collapse or fainting
  • Difficulty waking up
  • Little or no urine output

Please seek urgent medical attention. Call an ambulance immediately

The information provided is based on your self-evaluation and does not constitute medical advice or diagnosis. If in doubt always consult with your doctor. We are not liable for any decisions, acts or omissions you make based on the information provided.

What’s the main reason you’d like to map your symptoms? Please choose the most relevant reason only.

COVID-19 Symptom Update

If you want to see the data we have so far go to our COVID-19 Symptom Update page. If you have symptoms please continue by going back to the previous screen and selecting an appropriate option.

How are you feeling?

How many days have you had symptoms?

Now for the important bit. Do you have any of these symptoms?

We are keen to understand how COVID-19 is affecting people with long-standing health problems. Do you have any of these conditions?

Take a look at these descriptions of mild, moderate and severe COVID-19. At the end, tell us which one best describes how you’re feeling now.

Mild COVID-19

How it feels: You’ll have flu-like symptoms, which can include cough, mild fever, headache, muscle pain and tiredness. You won’t be short of breath in general. You shouldn’t have a high fever. Keep yourself hydrated and rest. More info...

Moderate COVID-19

How it feels: You’re more breathless and feel your heart beat faster when you move around. The cough is more noticeable. You’ll be coughing many times an hour and it’s probably making you tired. You may have symptoms of a fever like shivering and chills. More info...

Severe COVID-19

How it feels: You’re going to feel very breathless (even when you’re resting), and might find it hard to finish sentences. Along with chest, stomach or back pain when you breathe, these can be signs you’ve developed pneumonia. You will not be eating and drinking normally. Other signs include a high fever. More info...

Warning: If you’re feeling increasingly breathless, can’t manage basic things like showering and eating, or if you can’t speak in whole sentences without taking extra breaths, call your local health service right away.

*Read Dr Mary Lowth’s authoritative article on the stages of coronavirus on Healthily

After reading this, would you say your symptoms are:

Please provide some basic information about you.

Condition Comparison

You told us you may have COVID-19. Here’s how you compare to other people taking part in the study:

Mild Moderate Severe
84% 13% 2%

The table below shows how your symptoms compare to others around the world.

Your symptoms highlighted in blue

Symptom % Mapper % Study*
Persistent cough 53% 68% 
Fever 23% 44% 
Fatigue / tiredness 57% 38% 
Coughing up mucus (sputum) 38% 34% 
Shortness of breath 34% 19% 
Muscle aches 48% 15% 
Sore throat 52% 14% 
Headache 46% 14% 
Chills 21% 12% 
Blocked nose 38% 5% 
Vomiting 7% 5% 
Diarrhoea 17% 5% 
Loss of smell and taste 20% N/A 
Loss of appetite 0% N/A 
Sneezing 0% N/A 
Chest pain / tightness 0% N/A 
Itchy eyes 0% N/A 
Joint pain / aches 0% N/A 

*Based on 1099 hospitalised patients in Wuhan, China

The information provided is based on your self-evaluation and does not constitute medical advice or diagnosis.

If you're a high-risk person with cardiovascular disease, diabetes mellitus, hypertension, chronic lung disease, cancer or chronic kidney disease, seek medical advice.

COVID-19 can become serious very quickly, so if your symptoms get worse or don't improve, don’t soldier on. If you're worried, contact your local health service and follow your national authorities' advice on how to behave during the coronavirus disease (COVID-19) outbreak. We are not liable for any acts, decisions or omissions that you make based on the information provided.

Thanks for taking part.

Telling us about your symptoms will help the world do more to respond to coronavirus. Scientists at Imperial College of Science Technology and Medicine, London, a global centre of excellence and epidemiological research into COVID-19, will use your anonymised data to study the outbreak.

If you want to see the data so far go to our COVID-19 Symptom Update page.

If your symptoms change please come back and tell us how you feel again.

Stay in touch and help us learn more

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Any other questions about your health? Find answers at Healthily

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