Welcome to the QRISK®3-2018 risk calculator https://qrisk.org/three

This calculator is only valid if you do not already have a diagnosis of coronary heart disease (including angina or heart attack) or stroke/transient ischaemic attack.

About you
Age (25-84):
Sex: Male Female
UK postcode: leave blank if unknown
Clinical information
Smoking status:
Diabetes status:
Angina or heart attack in a 1st degree relative < 60?
Chronic kidney disease (stage 3, 4 or 5)?
Atrial fibrillation?
On blood pressure treatment?
Do you have migraines?
Rheumatoid arthritis?
Systemic lupus erythematosus (SLE)?
Severe mental illness?
(this includes schizophrenia, bipolar disorder and moderate/severe depression)
On atypical antipsychotic medication?
Are you on regular steroid tablets?
A diagnosis of or treatment for erectile disfunction?
Leave blank if unknown
Cholesterol/HDL ratio:
Systolic blood pressure (mmHg):
Standard deviation of at least two most recent systolic blood pressure readings (mmHg):
Body mass index
Height (cm):
Weight (kg):

Welcome to the QRISK®3-2018 risk calculator

Welcome to the QRISK®3-2018 Web Calculator. The QRISK®3 algorithm calculates a person's risk of developing a heart attack or stroke over the next 10 years. It presents the average risk of people with the same risk factors as those entered for that person.

The QRISK®3 algorithm has been developed by doctors and academics working in the UK National Health Service and is based on routinely collected data from many thousands of GPs across the country who have freely contributed data to the QResearch database for medical research.

QRISK®3 has been developed for the UK population, and is intended for use in the UK. All medical decisions need to be taken by a patient in consultation with their doctor. The authors and the sponsors accept no responsibility for clinical use or misuse of this score.

The science underpinning QRISK®3 has been published in the BMJ -- see the publications tab for details.

What is the difference between QRISK®3 and QRISK®2?

QRISK®3 includes more factors than QRISK®2 to help enable doctors to identify those at most risk of heart disease and stroke.
These are

  • Chronic kidney disease, which now includes stage 3 CKD
  • Migraine
  • Corticosteroids
  • Systemic lupus erythematosus (SLE)
  • atypical antipsychotics
  • severe mental illness
  • erectile dysfunction
  • a measure of systolic blood pressure variability

Has QRISK®3 been validated?

Yes. QRISK®3 has been validated on a separate group of practices from that used to develop the score and the performance is very good. See the academic paper for more details.

Why change the name from QRISK®2 to QRISK®3?

It's the same science and team behind the score, and the way that we intend it to be used remains exactly the same. In many ways it is very similar to our usual annual updates -- however, we thought that as we are introducing several new parameters, we'd upgrade its major version number.

What will now happen to QRISK®2?

QRISK®2-2017 will be the last version of QRISK®2 that we will produce. QRISK®3 will be the standard version of QRISK® shipped in our software development kits in 2018, so all implementations will become QRISK®3 in due course.

But I want to carry on using QRISK®2...

Although QRISK®2 is fine to use in a transition period, QRISK®3 is better. For several conditions QRISK®2 will underestimate people's risk. Plan to move to using QRISK®3 in an orderly fashion. Learn what the new parameters mean and embrace them!