Inductance Converters | Millihenrys, Microhenrys & Henrys Hub
Inductance Converter (mH to μH)
Welcome to ConverterHub’s complete Inductance Converters directory. Convert seamlessly across electronic inductor ratings, choke coil specifications, transformer windings, and RF tuning circuits—including Henrys (H), Millihenrys (mH), Microhenrys (μH), and Nanohenrys (nH)—with verified electromagnetic formulas, interactive calculators, and authoritative inductance reference tables.
All Inductance Conversion Tools
Select any converter below for instant calculations, formula explanations, and comprehensive reference tables:
Millihenry & Microhenry Conversions
RF & High-Frequency Nanohenry Scaling
Understanding Inductance: Opposition to Current Change
Inductance is the property of an electrical conductor or circuit that causes an electromotive force (voltage) to be generated when the electrical current flowing through it changes ($V_L = -L frac{di}{dt}$). Named in honor of American physicist Joseph Henry, the coherent SI unit of inductance is the Henry (H).
- 1 Henry (H): Defined as the inductance of a circuit when a current change of one ampere per second induces an electromotive force of one volt ($1text{ H} = 1text{ V}cdottext{s} / 1text{ A} = 1 Omegacdottext{s}$). Common in massive power grid chokes and large motor windings.
- 1 Millihenry (mH): One-thousandth of a henry ($1text{ mH} = 10^{-3}text{ H} = 1,000text{ mu H}$). Standard unit for audio crossover network inductors, switch-mode power supply (SMPS) storage chokes, and line filters.
- 1 Microhenry (μH): One-millionth of a henry ($1text{ mu H} = 10^{-6}text{ H} = 1,000text{ nH}$). Widely used in DC-DC buck/boost converters, EMI suppression beads, and HF/VHF radio transmitters.
- 1 Nanohenry (nH): One-billionth of a henry ($1text{ nH} = 10^{-9}text{ H} = 0.001text{ mu H}$). Critical in microwave frequencies, PCB trace parasitic inductance, and UHF/Wi-Fi matching networks.
Common Inductance Benchmarks in Technology
| Inductor Type / Application | Nanohenrys (nH) | Microhenrys (μH) | Millihenrys (mH) | Typical Core Material |
|---|---|---|---|---|
| 1 cm Straight PCB Copper Trace Parasitic | 10 nH | 0.010 μH | — | Air / FR4 Substrate |
| UHF / 2.4 GHz RF Antenna Matching Inductor | 22 nH | 0.022 μH | — | Air Core / Ceramic Chip |
| High-Frequency EMI Suppression Ferrite Bead | 2,200 nH | 2.20 μH | — | Manganese-Zinc Ferrite |
| Microprocessor Core Buck Converter Choke | 4,700 nH | 4.70 μH | — | Molded Metal Powder Core |
| Automotive Switching Regulator Inductor | 22,000 nH | 22.0 μH | 0.022 mH | Shielded Ferrite Bobbin |
| Audio Speaker Crossover Low-Pass Choke | — | 1,500 μH | 1.50 mH | Laminated Iron / Air Core |
| Mains AC Line Common Mode Noise Choke | — | 10,000 μH | 10.0 mH | Toroidal Ferrite Core |
| Industrial Fluorescent Lamp Magnetic Ballast | — | — | 1,000 mH (1 H) | Silicon Steel Laminations |
Practical Engineering Notes on Inductor Circuits
Keep these fundamental circuit laws in mind when configuring inductive networks:
- Series Connection: Inductors connected in series (with zero mutual coupling) sum directly: $L_{text{total}} = L_1 + L_2 + dots + L_n$.
- Parallel Connection: The reciprocal of parallel inductance equals the sum of reciprocals: $1/L_{text{total}} = 1/L_1 + 1/L_2 + dots + 1/L_n$.
- Stored Magnetic Energy: The energy stored in the magnetic field of a current-carrying inductor is given by $E = frac{1}{2} L I^2$ (measured in Joules).