How to Measure Guitar Action: A Beginner's Step-by-Step Guide
How to Measure Guitar Action
If your guitar feels difficult to play or you're experiencing fret buzz, your guitar action could be the cause. Guitar action refers to the distance between the strings and the frets. Whether you're a beginner or an experienced player, knowing how to measure guitar action is an essential skill that can improve comfort, playability, and tone.
In this guide, you'll learn exactly how to measure guitar action, what the ideal measurements are, and when adjustments may be necessary.
What Is Guitar Action?
Guitar action is the height of the strings above the fretboard. It affects how easy your guitar is to play and how it sounds.
There are two common types of action:
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Low action: Easier to press the strings, making the guitar more comfortable to play. However, if it's too low, it may cause unwanted fret buzz.
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High action: Requires more finger pressure but often produces a louder, cleaner tone. If it's too high, it can make playing uncomfortable.
Finding the right balance depends on your playing style and personal preference.
Tools You'll Need
Before measuring your guitar action, gather the following:
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Standard ruler with millimeter markings
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Guitar tuner
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Flat surface or guitar stand
Step 1: Tune Your Guitar
Always tune your guitar to standard pitch before taking any measurements.
String tension affects action height, so measuring an untuned guitar will give inaccurate results.
Step 2: Place the Guitar in Playing Position
Hold the guitar as if you're playing it or place it securely on a flat surface.
Avoid measuring while the guitar is lying unevenly, as gravity can slightly affect the neck.
Step 3: Measure at the 12th Fret
The standard location for measuring guitar action is at the 12th fret.
Place the ruler vertically on top of the 12th fret and measure the distance from the top of the fret to the bottom of the string.
Measure both:
Low E (6th string)
High E (1st string)
Standard Guitar Action Measurements
While preferences vary, these measurements work well for most players.
| String | Recommended Action |
|---|---|
| Low E (6th string) | 1.5–1.75 mm |
| High E (1st string) | 1.25–1.5 mm |
Electric guitars often have slightly lower action than acoustic guitars.
How to Know if Your Action Is Too High
Your action may be too high if:
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Chords require excessive finger pressure.
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Barre chords are difficult.
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Notes sound sharp when pressed.
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Your fingers tire quickly.
High action can result from neck relief issues, saddle height, or changes in humidity.
How to Know if Your Action Is Too Low
Action may be too low if:
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Strings buzz against the frets.
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Notes choke during bends.
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Buzz occurs even when playing lightly.
In many cases, raising the saddle or adjusting the truss rod can help solve the problem.
Can You Adjust Guitar Action Yourself?
Yes—but only if you're comfortable making small adjustments.
Common adjustments include:
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Tightening or loosening the truss rod
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Raising or lowering the bridge saddles
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Adjusting the saddle height on acoustic guitars
If you're unsure, it's best to have your guitar professionally set up. Incorrect adjustments can damage the neck or affect intonation.
Tips for Accurate Measurements
For the best results:
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Measure with the guitar fully tuned.
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Measure both the bass and treble sides.
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Check your action after changing string gauges.
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Recheck measurements after adjusting the truss rod.
Frequently Asked Questions
What is a good guitar action for beginners?
Most beginners find an action of around 2.0 mm on the low E string and 1.5 mm on the high E string comfortable because it's easier to press the strings without causing excessive fret buzz.
Does lower action make the guitar easier to play?
Yes. Lower action generally requires less finger pressure, making the guitar easier to play. However, lowering it too much can lead to fret buzz.
Should acoustic and electric guitar action be the same?
No. Acoustic guitars typically have slightly higher action because of their heavier strings and stronger vibration.
Final Thoughts
Learning how to measure guitar action is one of the easiest ways to improve your instrument's performance. With just a ruler and a few minutes, you can identify whether your guitar is properly set up or needs adjustment.
Regularly checking your guitar action helps maintain comfortable playability, improves tone, and allows you to enjoy your instrument at its best. Whether you play acoustic or electric guitar, understanding your guitar's setup is a valuable skill that every guitarist should have.
Recommended Product
For accurate and reliable measurements, check out the Powered By Rock Guitar String Action Ruler. It's designed to help you measure string height with precision, making guitar setup and maintenance easier for players of all skill levels.
Ready to Improve Your Guitar Setup?
If you're ready to measure your guitar action with confidence, the Powered By Rock Guitar String Action Ruler is an essential addition to your toolkit. Whether you're performing a complete setup or making small adjustments, having the right measuring tool helps you achieve better playability and tone.
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