Free tools

Useful things, with nothing attached.

No account, no email gate, no lead capture behind a result. Everything here runs in your browser and sends nothing anywhere, which is also why we can afford to make it good.

Why we publish these

Partly because clinicians look for them. Mostly because a calculator page makes no claim about our software. It either matches the published formula or it is a defect, and that is a refreshing thing to be able to say on a vendor’s website.

Nothing is captured

No account, no email for a result, no analytics watching what you type. The calculation happens in your browser and stops there.

The workings are shown

Formula, worked example, interpretation bands and the paper it comes from. If you cannot check a calculator by hand, you should not trust it.

Limits are stated

Where a score was derived in a non-Indian cohort, or does not apply in pregnancy, or needs training to score reliably, the page says so rather than leaving you to find out.

The same calculations, inside the consultation.

Pre-filled from the chart, with the result and the inputs that produced it saved together. That part is scheduled scope, not something you can use today, and we will say so on the call too.