Hormonology ACTH Pituitary-adrenal axis

ACTH Unit Converter

Convert ACTH between pg/mL, pmol/L, pg/dL, pg/100mL, pg%, pg/L, ng/L, and fmol/mL.

Published on: 2026-06-08 · Last updated: 2026-06-08

Enter ACTH value

Value

Unit

You can enter a value in any supported unit.

Conversion Results

pmol/L — SI unit

- pmol/L

pg/mL — common conventional unit ·

- pg/mL

pg/dL — same concentration family as pg/100mL

- pg/dL

pg/100mL — same as pg/dL

- pg/100mL

pg% — same as pg/dL

- pg%

pg/L — very low concentration unit

- pg/L

ng/L — same numeric value as pg/mL

- ng/L

fmol/mL — same numeric value as pmol/L

- fmol/mL

What does this converter do?

This tool converts ACTH values between pg/mL, pmol/L, pg/dL, pg/100mL, pg%, pg/L, ng/L, and fmol/mL. It is designed for ACTH, also called adrenocorticotropic hormone or corticotropin. The conversion is specific to ACTH 1-39 and should not be used for cortisol, 17-Hydroxyprogesterone, insulin, PTH, or other peptide hormones.

Supported units

pmol/L · SI unit pg/mL · common conventional unit pg/dL · same concentration family as pg/100mL pg/100mL · same as pg/dL pg% · same as pg/dL pg/L · very low concentration unit ng/L · same numeric value as pg/mL fmol/mL · same numeric value as pmol/L

Conversion formulas

pmol/L = pg/mL × 0.2202

pg/mL = pmol/L × 4.541

ng/L = pg/mL

pg/dL = pg/100mL = pg%

pg/dL = pg/mL × 100

pg/L = pg/mL × 1000

fmol/mL = pmol/L

Example conversion

If ACTH = 25 pg/mL, then ACTH ≈ 5.51 pmol/L, ≈ 25 ng/L, ≈ 2500 pg/dL, and ≈ 5.51 fmol/mL.

Important laboratory note

ACTH interpretation depends strongly on sampling time, collection tube, sample handling, transport temperature, stress, medications, adrenal and pituitary status, and the laboratory assay. ACTH is a labile peptide, so pre-analytical conditions are especially important. This converter only changes units and does not diagnose adrenal insufficiency, Cushing syndrome, congenital adrenal hyperplasia, or any pituitary-adrenal disorder.