Bilirubin Unit Converter

Convert bilirubin values between mg/dL and µmol/L and check them against normal reference ranges for adults and newborns.

Converter

mg/dL
µmol/L

Reference Ranges — Total Bilirubin

Adult

Newborn (Total Bilirubin)

Normal (<24 h) <6 mg/dL  /  <103 µmol/L
Phototherapy threshold (term, 48–72 h) 15 mg/dL  /  257 µmol/L
Exchange transfusion risk >25 mg/dL  /  >428 µmol/L
Formula:  mg/dL × 17.1 = µmol/L  ·  µmol/L ÷ 17.1 = mg/dL

Summary

Convert bilirubin values between mg/dL and µmol/L and check them against normal reference ranges for adults and newborns.

How it works

  1. Enter your bilirubin value in either mg/dL or µmol/L.
  2. The converter uses the factor 17.1 (1 mg/dL = 17.1 µmol/L) to compute the result.
  3. The converted value appears immediately in the opposite unit field.
  4. A reference panel shows whether your value falls within normal adult or newborn ranges.
  5. Switch between Total, Direct (conjugated), and Indirect (unconjugated) bilirubin types to see the corresponding reference ranges.

Use cases

  • Interpret lab reports that use different unit systems.
  • Cross-reference bilirubin levels when traveling or consulting overseas physicians.
  • Assess neonatal jaundice values against standard phototherapy thresholds.
  • Convert values for medical research or patient record entry.
  • Compare direct vs. indirect bilirubin fractions in clinical notes.
  • Quickly sanity-check manual unit conversions during patient care.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu