Free clinical trial planning tools
Clinical Trial Calculators
Straightforward planning tools for patient numbers, recruitment, study timelines and tablet or capsule supply.
Patient Numbers →
Estimate how many patients to screen and how many may complete a study.
Recruitment →
Choose a simple recruitment estimate or an advanced forecast with varying site performance and a cumulative recruitment graph.
Study Duration →
Estimate LPI, LPLV, database lock and total study duration from your input dates.
Drug Supply →
Estimate tablets, capsules and whole bottles by Arm/Group, including overage.
About TrialMath
Practical calculations, clear assumptions
TrialMath provides free planning estimates for clinical trial teams. Each calculator explains its assumptions and limitations. Review outputs against the study protocol and operational plan before use.