Clinical-grade calculators with instant results and optimal ranges. No account required.
Calculate your insulin resistance score from fasting glucose and fasting insulin. The gold standard proxy for insulin resistance.
Fasting glucose + insulin → insulin resistance score
Convert between average blood glucose and estimated A1C. Bidirectional — enter glucose to get A1C, or A1C to get glucose.
Average glucose ↔ A1C conversion
Calculate your optimal vitamin D supplement dose based on your current level, target level, and body weight.
Current level + weight → daily dose + timeline
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