Check where your hemoglobin sits. This free anemia checker compares your Hb result to common reference thresholds for men, women and pregnancy — informational only, and never a substitute for a doctor’s diagnosis.
Find “hemoglobin” or “Hb” on your blood-test report. Use your own lab’s reference range where given — it’s the most accurate for you.
Thresholds follow common WHO reference values for adults; children and other groups differ, and labs vary. Being below a threshold suggests it’s worth a conversation with your doctor — it isn’t a diagnosis.
How the Anemia Risk Calculator Works
This tool compares a hemoglobin (Hb) result you enter against common reference thresholds for your group, so you can see whether your value falls below the range typically used to flag possible anemia. It is a general risk-awareness tool, not a diagnosis.
Formula: If your unit is g/L, it’s first converted with Hb (g/dL) = Hb (g/L) ÷ 10. Then: Result = “Below threshold” if Hb (g/dL) < Threshold(group), otherwise “At or above threshold”. Thresholds are: adult man = 13.0 g/dL, adult woman (not pregnant) = 12.0 g/dL, pregnant = 11.0 g/dL.
- Group — adult man, adult woman (not pregnant), or pregnant; sets which threshold your result is compared against.
- Hemoglobin (Hb) result — the numeric value from your blood test that gets compared to the threshold.
- Units — g/dL or g/L toggle; g/L values are converted to g/dL (÷10) before comparison.
Example Scenarios
| Group | Hb Entered | Unit | Threshold (g/dL) | Result |
|---|---|---|---|---|
| Adult man | 12.5 | g/dL | 13.0 | Below threshold |
| Adult woman | 12.5 | g/dL | 12.0 | At or above threshold |
| Pregnant | 105 | g/L | 11.0 | Below threshold (10.5 g/dL) |
| Adult man | 140 | g/L | 13.0 | At or above threshold (14.0 g/dL) |
| Adult woman | 11.5 | g/dL | 12.0 | Below threshold |
| Pregnant | 11.0 | g/dL | 11.0 | At or above threshold |
Anemia Risk Calculator FAQ
What hemoglobin level counts as anemia?
Common reference thresholds are below 13.0 g/dL for adult men, below 12.0 g/dL for non-pregnant adult women, and below 11.0 g/dL during pregnancy. These are general reference points, not a diagnosis — your own lab’s reference range and a doctor’s interpretation matter more for your individual result.Why is the pregnancy threshold lower than for non-pregnant women?
Blood volume expands substantially during pregnancy, which naturally dilutes hemoglobin concentration even when iron stores are adequate. Reference thresholds are set lower for pregnancy to account for this normal physiological change.Can this calculator diagnose anemia?
No. It only compares a single hemoglobin number to a general threshold. Anemia has many possible causes and is properly diagnosed through a full blood count (CBC) and clinical evaluation by a doctor, not a single number compared online.How do I convert my lab result from g/L to g/dL?
Divide the g/L value by 10. For example, a lab result of 120 g/L equals 12.0 g/dL. This calculator performs that conversion automatically when you select g/L as your unit.My hemoglobin is right at the threshold — does that mean I’m fine?
Not necessarily. The comparison is a simple cutoff with no “borderline” category, so a value exactly at or just above the threshold isn’t automatically reassuring. It’s worth discussing any result close to the line with your doctor rather than relying on the cutoff alone.Where do I find my hemoglobin value on a blood test report?
Look for “Hemoglobin” or “Hb” in the complete blood count (CBC) section of your lab report, usually listed in g/dL or g/L alongside your reference range. Use your own lab’s stated reference range if one is provided, since it’s the most accurate for your situation.Related Calculators
Blood test results are often reviewed alongside other health metrics: try the iron intake calculator since low iron is a common cause of anemia, the blood type compatibility calculator if you’re exploring other blood-related questions, or the thyroid function checker since fatigue can stem from several overlapping causes.