Inductance Converter

# Inductance unit converter
INDUCTANCE_TO_HENRY = {
    "H":  1,
    "mH": 1e-3,
    "uH": 1e-6,   # µH
    "nH": 1e-9,
    "pH": 1e-12,
}

def convert_inductance(value: float, from_unit: str, to_unit: str) -> float:
    """Convert between inductance units via henry (H)."""
    value_in_henry = value * INDUCTANCE_TO_HENRY[from_unit]
    return value_in_henry / INDUCTANCE_TO_HENRY[to_unit]

# XL = 2π × f × L  (inductive reactance in ohms)
import math
def inductive_reactance(inductance_h: float, frequency_hz: float) -> float:
    return 2 * math.pi * frequency_hz * inductance_h

# Example
print(convert_inductance(1000, "nH", "uH"))  # 1.0 µH
print(convert_inductance(1, "mH", "H"))       # 0.001 H

# Reactance of 100µH inductor at 1MHz
xl = inductive_reactance(100e-6, 1e6)
print(f"XL at 1 MHz: {xl:.2f} Ω")  # 628.32 Ω