Every calculator we've built, kept on one reference shelf.
34 pharmacist-built tools for interaction checks, dosing, disease scoring, and nutrition — organized the way a formulary is organized, so you can find the right instrument in seconds.
Most consulted this month
The six tools readers open most often — a good place to start if you're not sure which instrument you need.
Drug Interaction Checker
Check any two medications for interaction risk in seconds.
Open tool →Pediatric Dosing Calculator
Weight-based dosing built around a child's safety margins.
Open tool →BMI & Body Surface Area Calculator
Get BMI and BSA figures used in dosing and risk assessment.
Open tool →Paracetamol Dose Calculator
Accurate paracetamol dosing that helps you avoid overdose risk.
Open tool →Pregnancy Due Date Calculator
Estimate a due date from cycle or conception data.
Open tool →Renal Dosing Calculator
Adjust medication dosing for impaired kidney function.
Open tool →No tools match that search. Try a shorter word, like "dose" or "gout".
Interaction Checkers
Screen a medication against other drugs, food, herbal products, supplements, or enzyme pathways before it's taken alongside anything else.
Drug Interaction Checker
Check any two medications for interaction risk in seconds.
Open tool →Drug–Supplement Interaction Analyzer
Flag risky combinations between supplements and medications.
Open tool →Drug-Induced Nutrient Deficiency Checker
Find out which medications deplete key nutrients over time.
Open tool →Dosing & Conversion
Work out the right amount — by weight, by kidney function, or converted between drug classes.
Pediatric Dosing Calculator
Weight-based dosing built around a child's safety margins.
Open tool →Paracetamol Dose Calculator
Accurate paracetamol dosing that helps you avoid overdose risk.
Open tool →Safety Alerts
Screen a regimen for cardiac, cognitive, liver, or pregnancy-related red flags before they become a problem.
Anticholinergic Cognitive Burden (ACB) Matrix
Score a regimen's cumulative anticholinergic load.
Open tool →Pregnancy & Breastfeeding Drug Safety Alarm
Verify medication safety during pregnancy or nursing.
Open tool →Disease Activity Scores
Standardized scoring instruments for tracking rheumatologic and inflammatory disease activity over time.
CDAI Calculator
Score rheumatoid arthritis activity with the Clinical Disease Activity Index.
Open tool →Nutrition & Deficiency
Screen for common deficiencies and work out nutrient, calorie, and body-composition targets.
Daily Nutrient Requirements Calculator
Compare intake against FDA, EU, and regional standards.
Open tool →Clinical Mifflin-St Jeor Macro Calculator
Calculate calorie and macro needs from a clinical formula.
Open tool →BMI & Body Surface Area Calculator
Get BMI and BSA figures used in dosing and risk assessment.
Open tool →Women's & Men's Health
Cycle tracking, pregnancy timing, evaluation prep, and treatment comparisons for reproductive and sexual health.
Pregnancy Due Date Calculator
Estimate a due date from cycle or conception data.
Open tool →Neuro & Skin
Assessment tools and trackers for neurological and dermatological conditions.