Utilities

Age Calculator

Calculate exact age in years, months, and days from a birth date — leap-year aware.

Date Difference Calculator

Calculate days between two dates with a years, months, and days breakdown.

BSA Calculator

Estimate body surface area (m²) with the Mosteller formula from height and weight.

Days Supply Calculator

Calculate prescription days supply from quantity dispensed, dose amount, and doses per day.

Dilution Calculator

Use C₁V₁ = C₂V₂ to find how much stock and diluent you need for a target concentration and volume.

Dosage Calculator

Calculate a weight-based drug dose (mg/kg) and daily total from patient weight and frequency.

IV Drip Rate Calculator

Calculate IV pump rate (mL/hr) and gravity drip rate (gtt/min) from volume, time, and drop factor.

Liquid Dose Calculator

Convert an ordered mg dose into mL using the liquid’s concentration (mg/mL).

Pediatric Dose Calculator

Estimate pediatric doses with Clark's rule, Young's rule, or mg/kg weight-based dosing.