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Transferrin Saturation Calculator

Calculate transferrin saturation (TSAT) from serum iron and total iron-binding capacity (TIBC). Enter both values in mcg/dL and see general educational reference bands with a medical disclaimer.

mcg/dL

Enter your serum iron value in mcg/dL, as shown on your lab report.

mcg/dL

Must be greater than 0, since it is the denominator of the ratio.

Common use limits

Enter serum iron and TIBC in the same unit, typically mcg/dL from the same blood sample. The calculator divides serum iron by TIBC and multiplies by 100 to report TSAT as a percentage.

The output is a general educational estimate. It does not diagnose iron deficiency, iron overload, or any other condition, and does not replace ferritin, hemoglobin, or a clinician's review.

This transferrin saturation calculator provides educational arithmetic and is not medical advice, a diagnosis, or a substitute for laboratory reporting. Do not use it to diagnose or rule out iron deficiency, iron overload, or any other condition, to change medication or supplement use, or to delay follow-up care. TSAT is one of several markers, alongside ferritin, hemoglobin, and clinical history, that a qualified healthcare professional uses together to assess iron status. Review an abnormal, unexpected, or changing result with a qualified healthcare professional. Seek prompt medical care for severe symptoms or any urgent health concern.

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