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10 best guitar tuners 2021: chromatic, polyphonic and strobe guitar tuners

Best guitar tuners: chromatic, polyphonic and strobe guitar tuners
(Image credit: Boss/D'Addario/Korg/Peterson/TC Electronic)

We know, we know: even the best guitar tuners aren't the sexiest pieces of kit you can buy – especially when you compare that to the thrill of getting your hands on a brilliant new pedalboard, electric guitar or even a great new beginner acoustic guitar. You'll be pleased you saved some cash for a guitar tuner though, as this humble device is one of the best investments you can make in your guitar playing, from bedroom to studio to stage.

With so many options on the market, how do you know which is the best guitar tuner for you? And how can you find out quickly so that you can buy the damn thing, then get on with the business of actually playing guitar?

That's where we come in. We've rounded up Guitar World's resident gear experts to track down the top guitar tuners available to buy. Want a sneak peek at our top pick? Ok, seeing as you asked nicely...

Best guitar tuners: Guitar World's pick

We love the TC Electronic PolyTune range, particularly the TC Electronic PolyTune 3 Mini, which tops our best guitar tuners list. The latest iteration sees the small-footprint mini pedal updated to include both buffered and true bypass outputs, plus an always-on mode for tracking your tuning as you play. 

This may be a mini pedal, but there’s a lot to love here. The display is easy to read, even with all those LEDs flashing away, and in almost any light conditions (so good for the stage). It’s not exactly a cheap option, but it’s worth a few extra dollars over the competition. Also, using mini pedals means you can get more on your board. Need we say any more?

Crucially, it features TC’s accurate and fast-reading polyphonic tuning technology – that means you can strum all the strings at once, and it will quickly let you know which ones need tuning up.

Best guitar tuners: Buying advice

There are three main types of tuner, and each have their pros and cons. Get to grips with them and you’ll find it easier to choose the best guitar tuner for you. Here they are in a nutshell:

1. Chromatic tuners
‘Chromatic’ just means that the tuner only identifies one of the 12 notes of the chromatic scale in Western music. Very useful indeed, but you’ll be playing one note at a time to tune.

2. Polyphonic tuners
These are a more recent design, allowing you to play all six strings together, with a display showing how in or out of tune all six are at once. Clever, huh? Those displays can take a bit of getting used to but once you do you’ll find tuning much quicker and easier.

3. Strobe tuners
These tend to be the most accurate tuners of all – usually reflected in a higher price. Certainly not necessary for beginners, but pro players and guitar techs swear by them.

On the whole, the best guitar tuners on offer include a mixture of these, using different ways to capture and analyze your guitar’s sound. For example, pedal tuners enable you to plug your guitar cable direct into them. This makes them near impervious to ambient noise; you’ll likely get the best results from plugging in.  

Finally, the clip-on Snark ST-2 only has a chromatic display, but it can pick up sound either via its built-in microphone or through vibrations when you attach it to your electric or acoustic guitar.

Best guitar tuners: Product guide & reviews

Best guitar tuners: TC Electronic PolyTune 3 Mini Guitar Tuner

(Image credit: Press Material)

1. TC Electronic PolyTune 3 Mini Guitar Tuner

The best guitar tuner (polyphonic) in a small footprint pedal

Price: $99/£69 | Type: Mini pedal | Tuning range: A0-C8 (27.5Hz-4186Hz) | Calibration range: A4 = 435Hz-445Hz | Accuracy: +/- 0.02 cents (strobe mode) 0.5 cents (chromatic mode) | Modes: Polyphonic / chromatic / strobe

Bypass/buffered outputs
Always-on mode is handy
Great accuracy and speed
Not ideal for big feet

TC Electronic has updated its PolyTune line with the latest 3 Mini model (superseding the 2 Mini, naturally). If you’d rather devote pedalboard space to cool, creative effects, this really could be the best guitar tuner for you. 

Polyphonic functionality is part and parcel of the PolyTune line – and the dinky display’s 109 LEDs do a good job of clearly conveying the potentially complicated view of your guitar’s full six-string tuning. 

Ever play slide guitar? Fretless? Long emotive string bends? Use the Mini’s handy always-on function to guide your pitching. And, with both buffered and true bypass modes, you can be sure there’s a place for the PolyTune anywhere in your signal chain.

Best guitar tuners: D’Addario NS Micro Soundhole Guitar Tuner

(Image credit: Press Material)

2. D’Addario NS Micro Soundhole Guitar Tuner

The best guitar tuner for those who want a discrete device

Price: $21.99/£24.50 | Type: Soundhole | Calibration range: A4 = 435Hz-445Hz | Accuracy: +/- 0.3 cents | Modes: Automatic / manual

Barely visible to the audience
Quick tuning response
More accurate tuners are available
Acoustic instruments only

Designed for acoustic guitars, basses and ukuleles, D’Addario’s soundhole mounted tuner is a compact device, offering easy viewing from its bright multi-color display. Hiding discreetly inside your acoustic guitar’s soundhole, the NS Micro won’t spoil the appearance of your pride and joy either. A non-marking attachment enables stress free installation. 

It works by picking up vibrations from your guitar’s soundboard – far more accurate than old fashioned microphone tuners prone to picking up ambient noise. Sure there are more accurate tuners available, and more expensive ones too. However, as it combines ease of use and an non-intrusive, diminutive form factor, the NS Micro is well worth a look. 

Best guitar tuners: Korg Pitchblack Advance Guitar Tuner

(Image credit: Press Material)

3. Korg Pitchblack Advance Guitar Tuner

One of the easiest guitar tuners to use. What’s not to like?

Price: $79.99/£72 | Type: Pedal chromatic tuner | Tuning range: E0-C8 (20.6Hz-4,186Hz) | Calibration range: A4 = 436Hz-445Hz | Accuracy: +/- 0.1 cent | Modes: Regular / Strobe / Half-strobe / Mirror

Very simple to use
Long battery life
Daisy chain capabilities
True bypass only

Korg’s evolution of their best-selling Pitchblack tuner, the Advance pedal is extremely simple to use, making it the best guitar tuner for beginners. Hook it up, choose your favorite display mode and you’re off. If you want no more than the basics in a robust and reliable package, this is the best guitar tuner there is.

That’s not to say there aren’t a couple of extras. The Advance’s calibrate button makes for easy setting of the reference tuning pitch between 436 and 445 hertz. The display button switches between four visuals – all very basic and easy to follow. 

Finally, there’s a power output. This pedal enables you to daisy chain other pedals to its own power supply, cutting down the number of wall warts you need. A great pedal. 

Best guitar tuners: Boss TU-3 Guitar Tuner

(Image credit: Press Material)

4. Boss TU-3 Guitar Tuner

One of the best guitar tuners, and an industry standard pedal too

Price: $99/£80 | Type: Pedal chromatic tuner | Tuning range: C0-C8 (16.35Hz-4,186Hz) | Calibration range: A4 = 436Hz-445Hz | Accuracy: +/- 1 cent | Modes: Chromatic / strobe

Trademark Boss build quality
Clear display
No polyphonic functionality
Buffered bypass only

An evolution on Boss’ top-selling industry standard TU-2, the TU-3 now features drop tuning functionality, improved tuning accuracy and ‘Accu-Pitch’ verification to confirm you’ve tuned successfully. All good stuff, and you can add to that the TU-3’s brighter screen for cutting through bright sunlight. Perfect for busking! 

Boss offers only buffered bypass mode in the TU-3. If you really need a true-bypass Boss tuner, you’re looking at the TU-3W ‘Waza Craft’ edition. At $50 extra, though, you do pay a premium. 

Still an industry standard, Boss’ ever-present rock solid build quality is evident. You may find other pedals do more for your money, however. 

Best guitar tuners: TC Electronic PolyTune Clip Guitar Tuner

(Image credit: TC Electronic)

5. TC Electronic PolyTune Clip

A great option for your money

Price: $49/£35 | Type: Clip | Tuning range: A0-C8 (27.5Hz-4186Hz) | Calibration range: A4 = 435Hz-445Hz | Accuracy: +/- 0.02 cents (strobe mode) 0.5 cents (chromatic mode) | Modes: Polyphonic / chromatic / strobe

Amazing accuracy
Small form factor design
Polyphonic functionality
Not the cheapest option

It’s been around since 2015, but TC Electronic’s diminutive clip-on is still a worthy offering, boasting impressive accuracy of a miniscule +/- 0.02-cent strobe-mode accuracy (that’s one 5,000th of a semitone!) and 0.5 cents in chromatic mode.

As its name suggests, the PolyTune Clip is polyphonic but it offers a regular one-note ‘needle’ mode for players who find a six-string display just too much of a light show. We say ‘six-string’...  PolyTune Clip is suitable for bass guitars too, albeit only in needle mode. Still, this is a stylish and functional tuner regardless.

Best guitar tuners: Snark ST-2 Super Tight Guitar Tuner

(Image credit: Snark)

6. Snark ST-2 Super Tight Guitar Tuner

One of the best guitar tuners that handles the basics well

Price: $15.99/£19.99 | Type: Clip-on chromatic tuner | Tuning range: Not specified | Calibration range: A4 = 415Hz-466Hz | Accuracy: Not specified | Modes: Microphone/vibration chromatic mode / metronome

Works with guitar, bass and more
Tune with vibration sensor or mic
Onboard metronome is handy
Accuracy and tuning range not specified

Though there are several pricier and fully featured guitar tuners here, Snark’s ST-2 is aimed at the player who wants just the bare essentials. So, what might those essentials be? First of all, the ST-2 tracks quickly. Set it to the vibration sensor and it’ll work just fine in all but the loudest of gigs. The microphone is for acoustic instruments of course, so you’ll need some peace and quiet. 

Second, the attachment system is robust and the screen is easily angled – a surprisingly important feature because these types of tuner have to fit in around tuning machines on six-string guitars, 12-strings, mandolins, basses… you get the idea! 

At this small price, it’s worth having an ST-2 around even if you only keep it in a gigbag. Definitely the best guitar tuner for those on a budget.

Best guitar tuners: D’Addario Micro Headstock Guitar Tuner

(Image credit: Press Material)

7. D’Addario Micro Headstock Tuner

Easy to use and cheap as chips, D’Addario has done it again

Price: $19.99/£15.99 | Type: Headstock tuner | Calibration range: A4 = 410Hz-480Hz | Accuracy: +/- 0.3 cents | Modes: Chromatic / metronome

Small and compact
Display could be better

Much like D’Addario’s soundhole mounted offering, the Micro Headstock Tuner is a small un-intrusive device. It’s lightweight too – ideal for maintaining your instrument’s balance. 

At 0.3 cents, this is one of the most accurate models in our best guitar tuners list. That’s an impressive feat considering it’s also one of the cheapest here. 

Sure the display is a simple chromatic layout, with none of the strobe style offerings of the more expensive models here, but this is all about wallet-friendly simplicity. It really is one of the best headstock tuners available to buy.

Best guitar tuners: Peterson StroboStomp HD Guitar Tuner

(Image credit: Press Material)

8. Peterson StroboStomp HD

With optimized presets for 135 tunings, Peterson has you covered

Price: $139/£119 | Type: Pedal | Tuning range: C0-A#8 (16.35Hz-7302Hz) | Calibration range: A4 = 390Hz-490Hz | Accuracy: +/- 0.1 cent | Modes: One screen mode / 135 tuning presets

Screen visible even in bright light 
135 ‘sweetened’ tuning presets
Too expensive for some

Famed for their accuracy, Peterson strobe tuners have long been the choice of pros seeking the highest quality gear, and 2019 saw the company unveil what it considers to be ‘the ultimate pedal guitar tuner’: the StroboStomp HD. 

Boasting a feature set far beyond most of its rivals, you’ll find both true and buffered bypass modes, plus 135 ‘sweetened’ tunings – micro-adjusted reference pitch points optimised for a variety of instrument types and altered tunings. You can even save your own presets. 

Of course, this level of nerd-ish tweakery can only be employed by the most precise tuners, and the StroboStomp HD delivers 0.1 cent accuracy. That’s plenty enough for the most discerning of ears. 

Best guitar tuners: Band Industries Roadie 3

(Image credit: Band Industries)

9. Roadie 3 Guitar Tuner

Get your own personal Roadie to tune your guitar for you

Price: $129 | Type: Motorised automatic tuner | Accuracy: +/- 2 cents | Modes: 40 factory tuning presets + 40 user presets

Takes the hassle out of tuning
Replace/re-wind strings easily
Ace for guitars, banjos, ukuleles
Bass model required for bass guitar

Whereas the market is flooded with pedals, automatic motorised tuners are few and far between. Using its vibration sensor, the Roadie 3 detects the pitch of a string then adjusts it to a preselected note. Just stick it on a machine head and the tuner does the winding for you, at up to 120rpm.

Not enough to tempt you? Well, consider that Roadie 3 comes equipped with over 100 built-in tuning presets. DADGAD? Sure! Capo tunings? You bet!! Simply access them via the onboard LED screen. For expanded editing features you’ll need the Roadie 3 app. Roadie 3 also has an integrated metronome to help you nail your timings, and an improved peg connector means it’ll fit even more instruments. Definitely one of the best guitar tuners of its kind.

Best guitar tuners: Korg Pitchblack Pro

(Image credit: Korg)

10. Korg Pitchblack Pro rackmount tuner

Easy to see, easy to use.

Price: $99/£104 | Type: Rackmount | Tuning range: E0-C8 (20.60Hz-4186Hz) | Calibration range: A4 = 436-445Hz | Accuracy: +/- 1 cent

Bright and bold display
Incredibly lightweight
Cable checker function is a lifesaver 
Plastic rack ears not the toughest 

If you’re after a big, bold tuner to sit in your rack setup then the Pitchblack Pro could be right up your street. Borrowing most of its guts from the floor pedal version, you can expect highly accurate tuning and easy calibration from this option. Multiple display modes allow for intuitive use at all times, and Korg’s revolutionary cable checker is a welcomed addition. All you need to do is plug one end of your cable into the input, and the other end into the ‘cable check’ socket. If a red ‘X’ shows, then it’s time to say bye-bye to your cable. Nobody wants any cable-related embarrassment now, do they?

An updated design from previous models, Korg’s Pitchblack Pro is over a kilogram lighter than its predecessors. The depth has also been reduced dramatically, partly to shed weight, but also because the Pitchblack Pro can be used outside of a rack setup. The rack ears can be reattached to the bottom of the unit to allow for pedalboard or floor monitor mounting. 

While being super lightweight is a cool touch, it does open the floor to some potential issues. The body of the unit and rack ears are made from plastic - perfect if you’re a careful player, or if your rack setup isn’t going to be traveling with you. But if you’re likely to use and abuse your gear, then a more robust option may be appropriate.