Guitar Pickup Inductance: What the Henry Rating Means

What Is Inductance?

Inductance is a property of any electrical coil, and a guitar pickup is simply a coil of wire wrapped around a magnet. When a string vibrates above the pickup, it alters the magnetic field around the coil, which induces a small electrical current in the wire. The pickup's inductance describes how strongly the coil resists changes in that flowing current, measured in henries (H).

Every pickup has an inductance value, usually listed as a number between 1 and 10 henries for standard electric guitar pickups. The value comes from the number of turns of wire, the core material, and the coil shape. More turns of wire, or a more permeable magnetic core, raises the inductance.

Inductance matters because it interacts with the capacitance of your guitar's cable and the input stage of your amplifier to form a natural low-pass filter. That technical phrase simply means: higher inductance reduces the amount of high-frequency content that reaches your amp, while lower inductance lets more sparkle through.

• Inductance is measured in henries (H); guitar pickups commonly range from about 1 H to 10 H.
• The value is set by the construction of the coil, not by the type of magnet alone.
• Higher inductance means a darker tone and higher output; lower inductance means a brighter tone and lower output.

Inductance vs. DC Resistance: What's the Difference?

When you compare pickup specifications, you will almost always see a DC resistance value listed in kilo-ohms (kΩ), and often an inductance value missing. That is because DC resistance is easier to measure, but it is not the complete story. Inductance and DC resistance are related, but they describe different physical properties: resistance is the opposition to steady current, while inductance is the opposition to changing current, which is exactly what a string generates.

Two pickups with the same DC resistance can have noticeably different inductance values if their coils are wound with different patterns or use different core materials. A pickup with a higher inductance at the same DC resistance will sound darker and will interact differently with your volume and tone controls. When a manufacturer publishes an inductance figure, it is often more useful for predicting tone than resistance alone.

For a deeper dive into the numbers you are likely to see on a spec sheet, read our article on guitar pickup DC resistance. The two values should be read together, for example, within a pickup family.

How Inductance Shapes Frequency Response

The most practical effect of inductance is on the pickup's frequency response, which describes how strongly the pickup produces each frequency from bass to treble. A pickup with high inductance will emphasize the midrange and lower treble, while rolling off the upper harmonics. This is why high-inductance pickups (often in the 5 to 10 H range) sound thick, fat, and warm, good for rock rhythm and lead sustain.

A low-inductance pickup, roughly 1 to 3 H, has a flatter response with a pronounced presence peak. Notes sound clearer, with more string-to-string separation, and the overall character is often described as glassy or jangly. This is the classic territory of single-coil pickups like the Stratocaster and the Telecaster bridge pickup.

In the middle, P90 pickups and some filtertrons occupy the 2.5 to 4.5 H range, producing a sound that balances the thickness of a humbucker with the clarity of a single coil. If you know what guitar sounds you are chasing, the henry rating is a useful map.

Inductance and Output: Why Higher Is Louder

Inductance plays a major role in a pickup's output level. A pickup with more inductance produces a higher voltage for the same string vibration, which is why high-inductance humbuckers drive an amplifier harder and reach overdrive sooner than low-inductance single coils. If your goal is to get a distorted tone without a separate boost pedal, a high-henry pickup delivers that.

But the relationship between volume and brightness is a trade-off. As inductance goes up, the resonant peak of the pickup moves lower in frequency, which makes the tone darker. On a high-output humbucker, too much inductance can make the guitar sound muddy, especially through a dark-sounding amplifier. Many players add a treble bleed circuit or a bright capacitor to compensate; those parts are covered in our guide to guitar potentiometer values.

The physical force of a pickup's magnets also affects output, but inductance is the electronic half of the equation. When you read a spec sheet, look for both inductance and a magnet type (Alnico 2, Alnico 5, ceramic) to understand the voice; our comparison of alnico vs. ceramic pickups explains the magnetic side.

What to Look for by Playing Style

If you mostly play clean chords and fingerstyle, or you favor twangy country and surf tone, choose pickups in the low-inductance range (about 1.5 to 2.5 H). They keep each note distinct and allow your amp's clean headroom to shine. In the best electric guitars for beginners you will find many single-coil models in this range.

For classic rock, blues, and hard rock, a moderate humbucker (around 4 to 5 H) or a P90 (2.5 to 4 H) balances thickness with articulation. If you want the sustain of a Les Paul but also need to cut through a band mix, avoid the highest-inductance pickups and pick a vintage-style humbucker in the 4 to 5 H range.

High-output humbuckers with inductance above 7 H are the domain of metal and modern hard rock. They produce a dark, saturated sound that is ideal for high-gain channels, but they can sound dull if you play with low gain or through a clean amplifier. For a full breakdown of what to expect, see our guide to 7 or 8 string guitars where high-output pickups are common.

• For clean, bright, jangly tones: low inductance (1.5 - 2.5 H).
• For blues and classic rock with clarity: moderate inductance (2.5 - 4.5 H).
• For rock and metal with high gain: high inductance (5 - 9 H).

Why Some Manufacturers Don't List Inductance

Manufacturers commonly list a DC resistance value because it is simple to measure, but many do not publish an inductance figure. This can be frustrating for buyers who want to compare pickups across a line. There are a few reasons: inductance changes with frequency, so a single number cannot tell the whole story, and many guitarists have learned to judge pickups by DC resistance and magnets.

When the inductance is absent, you can still make a good guess based on family: single coils normally fall below 3 H, P90s from 3 to 4.5 H, and humbuckers from 4 to 9 H. As a beginner, you rarely need to know the exact number. Focus on the pickup type and the magnet type in the pickup's description, and trust the tonality descriptions from the maker.

If you are thinking of modifying your own guitar, read our guide on how to upgrade electric guitar pickups before you buy so you know how the pickup will interact with your existing controls.

What to pick for your use

Questions

What is a good henry rating for a guitar pickup?

For a single coil, about 1.5 to 3.0 H is normal. For a P90 pickup, about 2.5 to 4.5 H is typical. For a humbucker, 4.0 to 9.0 H is common. There is no single best value; it depends on the sound you want.

Does higher inductance always mean a darker tone?

All else equal, yes. Higher inductance moves the resonant peak lower, which reduces high frequencies. However, other factors like magnet type and pickup position also affect brightness, so a low-inductance pickup with a strong Alnico 5 magnet can still sound brighter than a higher-inductance pickup with a softer Alnico 2 magnet.

Is it possible to measure pickup inductance at home?

Yes, you can measure it with an inductance meter or a multimeter that has an inductance scale. The measurement must be taken across the two output leads of the pickup. Factory specs are usually more accurate than a home measurement because the value can be affected by metal objects nearby.

Can I mix pickups with different inductance values in one guitar?

Yes, many guitars do. A common setup pairs a low-inductance single coil at the neck with a higher-inductance humbucker at the bridge. The difference in output and brightness gives you a range of tones. Just be aware that the volume will vary between positions, and a different pickup output can be balanced by adjusting pickup height.

Should I worry about inductance when buying my first electric guitar?

Not at all. The guitar's pickup type (single coil or humbucker) is enough to understand. Inductance becomes important when you replace pickups later and want control over the exact voice. A high inductance spec is a clue, but the sound of the pickup in context matters more.

How does inductance relate to pickup output level?

Higher inductance generally produces a higher output voltage for the same string vibration. But output level also depends on the number of wire turns and the magnetic field strength. So a pickup with high inductance will often be louder, but not always; a pickup with a stronger magnet can compensate for lower inductance.