Endocrinology Calculators
Tools for diabetes and thyroid management — HbA1c-to-glucose conversion, insulin correction dosing, and TSH interpretation.
This category currently includes 8 tools, including HbA1c Converter, Insulin Correction, and TSH Interpreter.
These resources are built for clinicians, trainees, and medically informed patients who need fast bedside calculations. Use the results as decision support and pair them with full clinical context and local guidelines.
All Endocrinology Tools (8)
HbA1c Converter
Convert HbA1c to estimated average glucose (eAG): 6%=126 mg/dL, 7%=154, 8%=183, 9%=212. ADA 2026 target <7% for most adults with diabetes. Shows both mg/dL and mmol/L.
Insulin Correction
Calculate insulin correction factor (ISF) using the 1800 rule (rapid-acting) or 1500 rule (regular insulin). Enter total daily dose — see how much 1 unit lowers blood glucose.
TSH Interpreter
Interpret TSH and free T4 to assess thyroid function. Normal TSH: 0.4–4.0 mIU/L. Identifies overt and subclinical hypothyroidism, hyperthyroidism, and euthyroid sick syndrome.
Levothyroxine Dose
Estimate the starting levothyroxine dose for hypothyroidism: ~1.6 mcg/kg/day for full replacement, ~25–50 mcg/day for subclinical hypothyroidism. Recheck TSH at 6–8 weeks.
Steroid Converter
Convert between corticosteroid doses by anti-inflammatory potency equivalence: prednisone 5 mg = hydrocortisone 20 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg.
HOMA-IR
Estimate insulin resistance using fasting glucose and fasting insulin with the HOMA-IR equation.
QUICKI
Estimate insulin sensitivity using fasting glucose and fasting insulin with the QUICKI formula.
HOMA-Beta
Estimate beta-cell function using fasting glucose and fasting insulin with the HOMA-Beta equation.