Blood test unit converters
Instant, two-way converters between the units labs use - mg/dL ↔ mmol/L and more - for glucose, cholesterol, vitamin D, HbA1c, creatinine and B12.
Lab results come in two unit systems: US "conventional" units (mg/dL, ng/mL, µg/dL) and international SI units (mmol/L, nmol/L, µmol/L). Each converter below is two-way and shows the exact formula, so you can move between your lab's unit and the one your doctor - or an online reference range - uses.
Glucose
mg/dL ↔ mmol/L
Total cholesterol
mg/dL ↔ mmol/L
LDL cholesterol
mg/dL ↔ mmol/L
Triglycerides
mg/dL ↔ mmol/L
Vitamin D
ng/mL ↔ nmol/L
HbA1c
% ↔ mmol/mol
Creatinine
mg/dL ↔ µmol/L
Vitamin B12
pg/mL ↔ pmol/L
Testosterone
ng/dL ↔ nmol/L
Iron
µg/dL ↔ µmol/L
Calcium
mg/dL ↔ mmol/L
Uric acid
mg/dL ↔ µmol/L
Albumin
g/dL ↔ g/L
Magnesium
mg/dL ↔ mmol/L
Folate
ng/mL ↔ nmol/L
Cortisol
µg/dL ↔ nmol/L
Bilirubin
mg/dL ↔ µmol/L
HDL cholesterol
mg/dL ↔ mmol/L
Free T4
ng/dL ↔ pmol/L
CRP
mg/dL ↔ mg/L
Frequently asked questions
Why do labs report different units?
The US and a few countries use conventional units (mg/dL, ng/mL); most of Europe, Israel and Russia use SI units (mmol/L, nmol/L). The value is identical - only the scale differs.
Does converting change what my result means?
No. Converting only restates the same quantity in another unit. Always read your result against your own lab's reference range.
Can I convert in both directions?
Yes - every converter here is two-way. Type a value in either box and the other updates instantly, with the exact formula shown.