Inductor Calculator
Calculate the inductance of a coil using number of turns, coil length, coil area, and core permeability
Calculator
Enter the coil parameters below to compute its inductance in henrys (H).
About the Inductor Calculator
The Inductor Calculator allows you to easily determine the inductance (L) of a coil based on its physical characteristics — including number of turns (N), coil length (l), cross-sectional area (A), and core permeability (μ). This tool is essential for electrical engineers, students, and technicians working on magnetic circuits, transformers, solenoids, and other inductive components.
What You Can Calculate
- Inductance (L): Measured in henrys (H), representing the coil’s ability to store magnetic energy when current flows through it.
- Effect of Core Material: Analyze how different permeability (μ) values affect the overall inductance.
- Design Optimization: Determine how coil geometry—number of turns, area, and length—impacts inductive performance.
Formulas Used in the Calculator
The calculator uses the standard formula for inductance of a solenoid-type coil:
- L = (μ × N² × A) / l
- where:
- μ = core permeability (H/m)
- N = number of turns
- A = cross-sectional area of the coil (m²)
- l = coil length (m)
The result gives the inductance in henrys (H), suitable for both air-core and magnetic-core inductors.
How to Use the Calculator
- Enter the number of turns (N) in the coil.
- Specify the coil length and select the appropriate unit (m, cm, or mm).
- Provide the cross-sectional area of the coil and choose the correct area unit (m², cm², or mm²).
- Input the core permeability (μ) value in henrys per meter (H/m).
- The calculator instantly displays the calculated inductance (L) in henrys (H).
Applications of Inductance Calculation
Understanding inductance is fundamental for electrical circuit design, signal filtering, and energy storage applications. Engineers and hobbyists use these calculations to design transformers, motors, chokes, and RF coils, ensuring optimal performance and efficiency in both AC and DC circuits.