Inductor Calculator

Calculate inductance values, inductive reactance, energy storage, and RL time constants for various inductor configurations and circuit applications.

Inductor Fundamentals

V = L × (di/dt)

L = V / (di/dt)
Inductance = Voltage / Rate of Current Change

Calculation Method

From Voltage & di/dt From Energy & Current From Reactance & Frequency From RL Time Constant

Basic Inductance (L = V / (di/dt))

Voltage Across Inductor

Rate of Current Change (di/dt)

A/s

About Inductance

Inductance is the property of a conductor to oppose changes in current flow. Inductors store energy in magnetic fields and are essential components in filters, transformers, and energy storage applications.

Key Properties:

Inductance (L): Measured in Henries (H), typically mH, µH
Current Rating: Maximum continuous current
Saturation Current: Current at which inductance drops
DCR: DC resistance of the winding

Applications:

Power Supplies: Energy storage, filtering
RF Circuits: Tuning, impedance matching
Motors: Starting, running windings
Transformers: Voltage conversion, isolation

Selection Criteria:

Required inductance value and tolerance
Current rating and saturation current
Frequency response and Q factor
DC resistance and power loss
Physical size and mounting style