How To Check Guitar String Height: Measure Your Guitar Action Correctly
How To Check Guitar String Height
If your guitar feels difficult to play or produces unwanted fret buzz, checking your string height is one of the first things you should do. String height, also known as guitar action, has a major impact on your guitar's playability, tone, and overall performance.
The good news is that measuring guitar string height is simple with the proper tools. In this guide, you'll learn how to check your guitar's string height accurately and understand what the measurements mean.
What Is Guitar String Height?
Guitar string height refers to the distance between the bottom of each string and the top of the frets. Most guitarists measure this distance at the 12th fret, where action is easiest to compare.
Proper string height creates a balance between comfortable playability and clean, buzz-free notes.
Why Should You Check Guitar String Height?
Checking your guitar's string height helps you:
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Improve playing comfort.
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Prevent fret buzz.
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Maintain proper intonation.
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Reduce finger fatigue.
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Identify setup issues before they become bigger problems.
Regular measurements also help you monitor changes caused by humidity, temperature, or string changes.
Tools You'll Need
Before you begin, gather these tools:
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Guitar tuner
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Clean, flat workspace
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Optional: capo
A dedicated string action ruler provides the most accurate measurements.
Step 1: Tune Your Guitar
Always tune your guitar to standard pitch before measuring the string height.
String tension affects action, so measurements taken with out-of-tune strings may not be accurate.
Step 2: Place the Guitar in Playing Position
Hold your guitar in its normal playing position or place it on a stable work surface.
Avoid measuring while the guitar is leaning at an unusual angle, as this can slightly affect the reading.
Step 3: Measure at the 12th Fret
Position the string action ruler directly on top of the 12th fret.
Measure from the top of the fret to the bottom of each string.
Typical starting measurements are:
Electric Guitar
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High E string: approximately 1.25-1.5 mm
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Low E string: approximately 1.5-1.75 mm
Acoustic Guitar
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High E string: approximately 2.0 mm
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Low E string: approximately 2.25 mm
Step 4: Compare Your Measurements
Compare your readings with the recommended ranges.
If your measurements are significantly higher or lower, your guitar may benefit from a setup adjustment.
What If Your String Height Is Too High?
High string action may cause:
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Difficulty pressing chords
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Finger fatigue
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Poor playing comfort
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Intonation problems
Lowering the bridge or making a proper setup adjustment may help.
What If Your String Height Is Too Low?
Action that is too low may result in:
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Fret buzz
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Choked notes
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Reduced sustain
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Uneven tone
In many cases, raising the action slightly solves these problems.
How Often Should You Check Guitar String Height?
It's a good idea to check your string height:
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After changing string gauges
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During seasonal weather changes
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After adjusting the truss rod
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Whenever your guitar feels different to play
Regular inspections help keep your guitar performing consistently.
Conclusion
Checking your guitar's string height only takes a few minutes, but it can greatly improve your playing experience.
With a reliable string action ruler and accurate measurements, you can identify setup issues before they affect your comfort or tone. Regularly checking your guitar action helps ensure your instrument stays easy to play and sounds its best.
Frequently Asked Questions
Where should guitar string height be measured?
Most players measure string height at the 12th fret, from the top of the fret to the bottom of the string.
Can I measure string height without a ruler?
You can estimate it visually, but a guitar string action ruler provides much more accurate results.
How often should I check my guitar action?
Every few months or whenever you notice changes in playability, string gauge, or seasonal humidity.
Is checking guitar string height difficult?
No. With the proper ruler and a few simple steps, most beginners can measure guitar action in just a few minutes.
Ready to measure your guitar like a pro? Check out The Powered By Rock Guitar String Action Ruler to accurately measure your string height and keep your guitar playing comfortably with the perfect setup.