Core dosage calculations
Build from reading an order and concentration through to liquid, tablet and weight-based calculations.
For educators and student-support teams
Medication maths resources for nursing educators
Use MedMaths as a free supplementary resource for medication-calculation teaching, revision and student practice. Link directly to the calculator, Guide or lesson that matches the skill you are teaching.
22 calculators25 practice lessons31 focused Guides7 specialty collections
Calculator first
Use focused calculators when the learning goal is the arithmetic and the final unit.
Context when it matters
Guides cover formula choice, interpretation, limitations and background without turning calculator pages into textbooks.
Practice separately
Learn lessons and quizzes are for teaching and repeated practice, not for replacing local assessment rules or clinical policy.
Teaching map
Choose resources by the skill you are teaching
Each pathway keeps the job of the resource clear: calculators perform arithmetic, Guides explain deeper context, and Learn provides teaching and practice.
IV rates, drops and time
Connect pump-rate arithmetic, gravity drip rates, infusion duration and the meaning of gtt/mL versus gtt/min.
Medication preparation and dilution
Separate reconstitution, dose-volume calculation, C1V1 = C2V2 dilution and final IV bag concentration.
Body measures and renal estimates
Compare BSA methods, distinguish eGFR from Cockcroft-Gault CrCl, and follow the method required by the source in use.
Laboratory calculations and interpretation
Use calculators for arithmetic, then move to focused interpretation where MedMaths has a dedicated Guide.
Paediatric calculation practice
Teach the arithmetic pathway while keeping medicine-specific dosing decisions and real-child fluid prescribing outside the tool.
Evaluate before you link
Check the source, not just the calculator
MedMaths is designed to make it straightforward for an educator to see where a formula came from, how the page is maintained and where the limits of the calculation begin.
Formula provenance
Where available, calculator and Guide pages connect the formula to original publications, current guidance and researcher history.
Explore formula historyVisible review boundaries
Pages state what the calculation does, what it does not decide, who authored the content and how review claims are defined.
Read the Editorial PolicyMethodology and testing
MedMaths documents formula selection, source checking, arithmetic testing, content review and the role of AI-assisted production.
Review the methodologyLinking and citation guidance
Link to the exact resource your learners need
- Direct linking is welcome. Link to a calculator, Guide, lesson, specialty collection or researcher page from your LMS, reading list or course material.
- Prefer the specific page. If you are teaching gravity drip rates, link to the drip-rate resource rather than sending students to the MedMaths homepage.
- For formal citations, use your institution's required style. Cite the specific page and use the page title, visible author information, publication or review date where shown, MedMaths, and the page URL.
- Do not imply endorsement. A link to MedMaths does not create a partnership, accreditation or institutional endorsement unless that has been agreed separately.
- Linking permission is not republication permission. Please contact MedMaths before copying, adapting or redistributing substantial MedMaths content.
Course or student-support use
Missing a resource your learners need?
Educator feedback is useful when it identifies a real calculation skill, wording problem or resource gap. MedMaths adds resources when they address a genuine calculation, teaching, or safety need.