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Total protein g/L → g/dL

Convert total protein from g/L to g/dL

Sources last checked: 2026-11-03

Total protein g/L → g/dL

Convert total protein from g/L to g/dL

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Converts units only; reference ranges depend on the laboratory, the assay and the patient.

Source: BIPM. The International System of Units (SI), 9th edition, 2019 — Table 8 (non-SI units accepted for use with the SI, incl. litre) and the definition of the kelvin and degree Celsius.Open

What is the Total protein g/L → g/dL?

Total protein in g/L, as reported by laboratories in the UK, Scandinavia and much of continental Europe, is converted here into g/dL, the unit used in the USA, Turkey and US-derived references. The factor is exactly 10, because 1 dL is 0.1 L.

When to use it

  • Reading US textbooks, question banks or papers after a result in g/L
  • Calculating globulins or the albumin/globulin ratio when units are mixed
  • Comparing serial values after a change of laboratory

When not to use it

  • CSF or urine protein
  • Protein intake or nutrition prescriptions in g/kg/day, which are a different quantity

How it is calculated

Total protein (g/dL) = total protein (g/L) ÷ 10

Clinical pearls and limitations

  • Converts units only; reference ranges depend on the laboratory, the assay and the patient.
  • g/dL = g/L ÷ 10; one decimal place is enough.
  • The albumin/globulin ratio has no unit, but both inputs must be in the same unit before dividing.
  • An unexpectedly large difference between total protein and albumin is the usual reason to request protein electrophoresis; the unit swap does not change that reasoning.
  • Reference intervals depend on the laboratory and method.

Frequently asked questions

How do I convert total protein from g/L to g/dL?

Divide by 10. Example: 74 g/L = 7.4 g/dL; 61 g/L = 6.1 g/dL.

What is 1 g/L in g/dL?

0.1 g/dL, because a decilitre is one tenth of a litre.

Why is plasma total protein higher than serum total protein?

Plasma still contains fibrinogen, which is consumed during clotting when serum is prepared. The difference is small but matters when comparing results from different sample types.

Evidence and guidelines

  1. Primary source: BIPM. The International System of Units (SI), 9th edition, 2019 — Table 8 (non-SI units accepted for use with the SI, incl. litre) and the definition of the kelvin and degree Celsius.

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For healthcare professionals and medical students. These tools support, and do not replace, clinical judgement. Always check results against the original source and your local protocols.