Corrected Calcium Calculator
Calcium adjusted for low albumin.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Corrected calcium
- 9.08 mg/dL
- Measured calcium
- 8.2 mg/dL
- Correction applied
- 0.88 mg/dL
- Status
- Normal range
- In mmol/L
- 2.27
Quick answer
Low albumin lowers measured total calcium without changing ionised calcium, so correction adds 0.8 mg/dL per 1 g/dL albumin deficit.
Corrected = Ca + 0.8 × (4 − albumin)
How to use the Corrected Calcium Calculator
- 1Enter serum calcium in mg/dL.
- 2Enter serum albumin in g/dL.
- 3Compare the corrected value with the normal range.
Frequently asked questions
Is ionised calcium better?
Yes — direct ionised calcium measurement is the gold standard when available.
What is the normal range?
Roughly 8.5–10.5 mg/dL for total calcium.