Blood Sugar Converter

# Blood glucose unit conversion
# Molecular weight of glucose = 180.182 g/mol
# Factor = 18.0182

FACTOR = 18.0182

def mgdl_to_mmoll(mgdl: float) -> float:
    """Convert blood glucose from mg/dL to mmol/L."""
    return mgdl / FACTOR

def mmoll_to_mgdl(mmoll: float) -> float:
    """Convert blood glucose from mmol/L to mg/dL."""
    return mmoll * FACTOR

def classify_fasting(mgdl: float) -> str:
    """Classify fasting blood glucose level (ADA guidelines)."""
    if mgdl < 70:
        return "Low (Hypoglycaemia)"
    elif mgdl < 100:
        return "Normal"
    elif mgdl < 126:
        return "Pre-diabetes"
    else:
        return "Diabetes range"

# Example conversions
values_mgdl = [54, 70, 90, 100, 126, 180, 250]
print(f"{'mg/dL':>8}  {'mmol/L':>8}  {'Category'}")
print("-" * 40)
for v in values_mgdl:
    mmol = mgdl_to_mmoll(v)
    category = classify_fasting(v)
    print(f"{v:>8}  {mmol:>8.1f}  {category}")

# Reverse conversion
print("\nmmol/L → mg/dL:")
for v in [3.9, 5.5, 7.0, 10.0]:
    mgdl = mmoll_to_mgdl(v)
    print(f"{v} mmol/L = {mgdl:.1f} mg/dL")