Built by a GP trainee, for primary care
GPCalc turns UK guidance into quick, practical calculators that fit inside a ten-minute consultation.
A note from the creator
Dr Sameer Alam · GP specialty trainee, Wirral
Who am I?
I'm Sameer, a GP specialty trainee working on the Wirral, with a year to go until I qualify as a GP.
Why I built GPCalc
General practice asks you to hold an enormous amount in your head. In a single surgery you might titrate antihypertensives, decide on a statin, check contraceptive eligibility and interpret a set of abnormal bloods, each with its own guideline running to dozens of pages, plus a local formulary and referral pathway on top.
I kept finding myself with ten tabs open, scrolling for the one threshold or table I needed, sometimes whilst a patient waited. I wanted a tool that did the looking-up for me: one that applied the guidance step by step, showed its reasoning and references, and gave me something concise to put in the notes. GPCalc started as that tool for myself.
What I want it to be
- Free and open to use for anyone working in UK primary care.
- Faithful to the guidance. Every recommendation is linked to its source and kept up to date as guidance changes.
- Everything runs in your browser and no patient information is sent or stored.
- Shaped by colleagues. I want you to tell me what's useful, what's not and what to build next.
Where it's heading
GPCalc is a prototype (October 2026), and it will keep growing. More calculators and more local formulary detail, with each tool reviewed against current guidance. It's there to support your clinical judgement, never to replace it.
If you spot an error or have an idea, I'd genuinely love to hear from you.
– Sameer