Heart & coagulation

NT-proBNP unit converter

Heart failure marker (N-terminal pro-B-type natriuretic peptide)

Also known as: N-terminal pro-B-type natriuretic peptide, N-terminal pro-brain natriuretic peptide, N-terminales pro-BNP, NT-proBNP sérique

Converter

Enter a value in any unit and all other units fill in.

pmol/L pg/mL = ng/L µg/L ng/dL

Worked example

62.5 pg/mL (middle of the reference range) = 7.39 pmol/L

Conversion formulas

pmol/L	pmol/L = pg/mL × 0.1182	pg/mL = pmol/L × 8.457
µg/L	µg/L = pg/mL × 0.001	pg/mL = µg/L × 1000
ng/dL	ng/dL = pg/mL × 0.1	pg/mL = ng/dL × 10

Reference range

Unit	Adults
pmol/L	0 – 14.78
pg/mL = ng/L	0 – 125
µg/L	0 – 0.125
ng/dL	0 – 12.5

Source: NT-proBNP in the very old population (AugUR study), AHA/ESC rule-out cut-off · Last reviewed: 2026-10-14

Note from the source: AHA and ESC rule-out cut-off for heart failure in the non-acute setting: 125 pg/mL; more than half of healthy people aged 70 and older exceed it

Frequently asked questions

How do I convert NT-proBNP from pg/mL to pmol/L?

pmol/L = pg/mL × 0.1182. In the other direction: pg/mL = pmol/L × 8.457.

What is the reference range of NT-proBNP?

For adults the range is 0 – 125 pg/mL (NT-proBNP in the very old population (AugUR study), AHA/ESC rule-out cut-off). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for NT-proBNP?

Common units are pmol/L, pg/mL, µg/L, ng/dL.