Universal Unit Converter (lab + vitals + basics)
Convert between the units that show up in medicine.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Category
- Glucose mg/dL <-> mmol/L
- Value 1
- 90
Result: 90 mg/dL = 5.0 mmol/L
The tool opens with these values already filled in. Replace them with your own.
What you enter
The value to convert, and the units to convert between.
What this is
Convert between the units that show up in medicine: temperature (F / C), length (in / cm / m), weight (lb / oz / kg / g), volume (oz / mL / L / tsp / tbsp / cup), pressure (mmHg / cmH2O / kPa), the common lab-value SI conversions (mg/dL <-> mmol/L for glucose, creatinine, calcium, urea, cholesterol; mEq/L <-> mmol/L for electrolytes), and the time conversions that matter for infusion math (mcg/kg/min <-> mg/kg/hr, mL/hr <-> drops/min at common drip-set sizes).
When to use it
Use this when a chart from one institution reports glucose in mmol/L and another in mg/dL, when converting a European drug dose into US conventional units, when reconciling a home blood-pressure log in kPa against a US-format goal, or when a learner needs to see why a 'simple' unit conversion has two factors (molecular weight and concentration). The conversions are exact; clinically meaningful precision (significant digits) is the user's choice.
How this is calculated
Standard SI <-> conventional conversion factors. NIH/NLM and IFCC references for HbA1c.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.