Pharmaceutical Tools · Dosing & Lab
Pharmaceutical Unit Converter
Convert mass (mg, mcg, g), volume (mL, L, tsp), body weight (kg, lbs), temperature, and concentration units with bidirectional live updates. Built for pharmacy verification, nursing dose prep, and analytical method unit harmonisation.
Quick Answer
Pharmaceutical unit conversion prevents dosing errors at the mg/mcg boundary (1 mg = 1000 mcg), converts body weight to kg for mg/kg protocols, and translates lab concentrations between mg/mL, mg/dL, and mmol/L when molecular weight is known. High-potency drugs (fentanyl, levothyroxine, digoxin) are routinely expressed in mcg to avoid decimal misplacement — always verify units before compounding or IV preparation.
Unit Converter
Select a category and enter a value — the converted result updates automatically in both directions.
How to Use This Converter
Example conversions
0.5 mg → 500 mcg | 70 kg → 154.32 lbs | 37°C → 98.6°F | 5 mL → 1 tsp | 1 mg/mL → 100 mg/dL
Pharma & clinical context
Unit harmonisation is a first step in every dose calculation — protocol tables in mg/kg assume kg body weight; IV pump libraries expect mcg/mL for potent infusions; bioanalytical LLOQ may be in ng/mL while clinic reports use mg/dL. Document the conversion factor in the pharmacy record when high-alert medications are involved.
Chain converted values to the Dosage Calculator for weight-based doses, the IV Drip Rate Calculator for infusion rates, the Molarity Calculator for solution prep, and the Molecular Weight Calculator when mmol/L conversion requires MW from formula.
Evidence & sources
- NIST SP 811 — SI units and conversion factors
- ISMP — Preventing medication errors (mg/mcg, decimal point guidance)
- USP — Metric dispensing requirements for oral liquids
- Competitive landscape: Generic converters like ConvertUnits.com cover general SI units without pharma concentration categories or mmol/L with MW. Omni Calculator focuses on IU/vitamin conversions rather than daily mg↔mcg and kg↔lbs dosing workflows. Calculory covers mass only. NovaPharmaNews provides a free pharma-focused unit converter with concentration (mg/mL↔mmol/L), body weight, and links to dosage, IV, and molarity tools — no login required.