Important safety information

Medical Disclaimer

Last reviewed: 11 July 2026

Do not use a calculator result as the sole basis for patient care

MedMaths calculators provide arithmetic support and educational working. They do not provide medical advice, prescribe or validate a dose, confirm that a medicine is appropriate, or replace assessment by a qualified health professional.

Before acting on any result

The original medication or fluid order
The medicine name, formulation, concentration, and product label
Patient-specific factors, contraindications, allergies, and current clinical status
Maximum doses, dose frequency, renal or hepatic guidance, and protocol-specific limits
Compatibility, stability, route, device, preparation technique, and administration requirements
Local policy, independent double-check requirements, and escalation pathways

Accuracy and limitations

Reasonable care is taken when building and checking calculators, but software defects, transcription errors, outdated links, misunderstood inputs, and inappropriate application of a formula can still occur. Results must be independently verified against current authoritative guidance.

Population formulas

Formulas such as body surface area, ideal body weight, and Cockcroft-Gault creatinine clearance are estimates. They may be unsuitable or require modified interpretation for particular patients, body sizes, ages, pregnancies, dialysis states, or rapidly changing clinical conditions.

External resources

External links are provided for transparency and education. MedMaths does not control their availability, updates, or clinical governance and does not endorse every statement on a linked website.

Use and responsibility

Users remain responsible for checking inputs, units, results, and clinical applicability. To the extent permitted by law, MedMaths does not accept liability for loss or harm arising from reliance on, misuse of, or inability to access the site.

Medical emergency

Do not use MedMaths for emergency assessment or treatment. For a serious or urgent emergency, call your local emergency number or attend the nearest emergency department.

Healthdirect guidance on calling Triple Zero

Corrections and contact

Report an incorrect result, unclear warning, broken reference, or other safety concern through the contact page or email medmaths.calc@gmail.com.

This disclaimer may be updated as the site, calculator library, or legal requirements change.

Before acting on any result

The original medication or fluid order

The medicine name, formulation, concentration, and product label

Patient-specific factors, contraindications, allergies, and current clinical status

Maximum doses, dose frequency, renal or hepatic guidance, and protocol-specific limits

Compatibility, stability, route, device, preparation technique, and administration requirements

Local policy, independent double-check requirements, and escalation pathways