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Compare recent and baseline basal body temperature averages in Celsius and Fahrenheit without claiming to confirm ovulation.

Add the NICHD 450-500 kcal/day breastfeeding reference to a separately established baseline with explicit limitations.

Calculate prepregnancy BMI and the cited ACOG/IOM singleton total weight-gain range with clear limitations.

Calculate the share of waking time spent sitting and user-selected movement-reminder opportunities without inventing a disease-risk score.

Estimate cigarette purchase spending avoided from daily use, pack size, pack cost, and smoke-free days.

Calculate adult race-free 2021 CKD-EPI creatinine eGFR with exact coefficients, creatinine-unit conversion, and CKD limitations.

Calculate QUICKI with the published base-10-log equation, glucose-unit conversion, and visible non-diagnostic boundaries.

Calculate HOMA-IR from same-draw fasting glucose and insulin with unit conversion and no unsupported universal cutoff.

Convert laboratory A1C to estimated average glucose in mg/dL and mmol/L using the NGSP/ADAG equation and visible limitations.

Calculate total cholesterol/HDL, LDL/HDL, and non-HDL cholesterol from one panel without replacing a full risk assessment.