Our Mission

ArithMedic is a free, open-source, FHIR-native medical calculation API.

It exists to democratize access to medical calculation formulas.

We believe in responsible, fast-paced medical innovation, where health tech teams have plug-and-play access to free, auditable, evidence-based medical formulas, regardless of ability to pay for integration with proprietary services or time and ability to develop their own solutions.

That's why ArithMedic is and will always be 100% free.

• Source Code

API Docs:

• Swagger
• Redocly

Quick Start

Get a patient's eGFR by submitting serum creatinine, age and sex.