TL;DR: Reed strength numbers are a rough guide, not a standard. Most beginners start on a 2 or 2.5, most intermediate players land between 2.5 and 3.5, and most advanced players play between 3 and 4. But the right strength depends less on your level than on your mouthpiece: the more open the tip, the softer the reed you need, and the more closed the tip, the harder the reed it can take. Brands also label strength differently, so a 3 in one box can feel like a 3.5 in another. Use the chart below as a starting point, then let your sound and your mouthpiece decide.
“What reed strength should I use?” is one of the most common questions clarinet teachers hear, and one of the most commonly misanswered. Students hear that good players use hard reeds, move up too fast, and spend months fighting a stuffy, airy sound. Others stay on a reed that is too soft and never develop the support that a real tone needs.
This guide explains what the numbers mean, gives a practical reed strength chart by level and by mouthpiece tip opening, shows how the main brands compare, and walks you through a simple test to find the strength that is right for you today.
Table of Contents
- What reed strength actually means
- Clarinet reed strength chart by level
- The mouthpiece decides more than your level
- Reed strength chart by tip opening
- How brands compare
- Signs your reed is too soft or too hard
- A 10-minute reed strength test
- When to move up a strength
- Key Takeaways
- FAQ
- Match your reed and mouthpiece
What reed strength actually means
A reed’s strength number describes its stiffness: how much the vamp resists bending when you blow. Manufacturers measure finished reeds on a flexing machine and sort them into grades, usually from 1.5 to 5 in half steps. A higher number means a stiffer reed that needs more air and embouchure support to vibrate.
Three things about that number matter for players:
- It is a range, not a point. Each grade covers a band of stiffness, so two reeds from the same box can feel noticeably different. That is normal, and it is why players buy reeds by the box and sort them.
- It is brand-specific. There is no industry standard. Each maker sets its own scale, and the cut of the reed (tip thickness, heart, shoulder) changes how a given stiffness feels in the mouth.
- It is not a skill badge. A harder reed does not make you a better player. A reed that is too hard for your setup makes you sound worse, and many fine professionals play a 3 or 3.5.
If you are new to how reeds are made and cut, start with our complete guide to reeds on a clarinet.
Clarinet reed strength chart by level
This is the chart most players are looking for. Treat it as a typical range for Vandoren Traditional or similar reeds on a medium-tip mouthpiece. Adjust for your mouthpiece using the next section.
| Player level | Typical strength | What you are looking for |
|---|---|---|
| First-year beginner | 2 – 2.5 | Easy response, a clear low register, and notes that sound without a fight |
| Second- and third-year student | 2.5 – 3 | More resistance to build support and a steadier upper register |
| Intermediate / advanced student | 3 – 3.5 | A focused tone, stable pitch, and control across all registers |
| Advanced amateur / college | 3 – 4 | Dynamic range, color, and a reliable altissimo |
| Professional | 3 – 4.5 | Whatever balances their specific mouthpiece, hall, and sound concept |
Notice how much the ranges overlap. Level tells you where to start; your mouthpiece tells you where to finish. Our starter guide to clarinet reeds for beginners covers the first year in more detail.
Pro Tip: For a young beginner, a reed that is slightly too soft is a much smaller problem than one that is too hard. Soft reeds cost some tone; hard reeds cost motivation.
The mouthpiece decides more than your level
A reed does not vibrate on its own. It vibrates against the mouthpiece’s facing, the curved ramp that falls away from the reed toward the tip. The distance between the reed and the tip rail is the tip opening, and the length of the curve is the facing length. Together they decide how far the reed has to travel and how much of it is free to move.
- Open tip opening (larger gap): the reed has farther to close, so a hard reed will feel stuffy and hard to seal. Open mouthpieces need softer reeds.
- Closed tip opening (smaller gap): the reed closes easily, so a soft reed will choke, go flat, and buzz. Closed mouthpieces need harder reeds.
- Facing length: a longer facing lets more of the reed vibrate, which usually favors a slightly softer reed; a shorter facing often wants a touch more strength and gives a quicker response.
This is why two players at the same level can play a 2.5 and a 4 and both be right. It is also why changing mouthpieces almost always means re-checking your reed strength. Our tip opening guide and facing curves guide explain the geometry in depth.
Reed strength chart by tip opening
Use this as your real starting point. Strengths assume Vandoren Traditional or a similar cut; move a half strength up or down for brands that run harder or softer.
| Tip opening | Category | Suggested starting strength |
|---|---|---|
| Under 1.10 mm | Closed | 3.5 – 4.5 |
| 1.10 – 1.20 mm | Medium-closed | 3 – 4 |
| 1.20 – 1.28 mm | Medium | 3 – 3.5 |
| 1.28 – 1.35 mm | Medium-open | 2.5 – 3.5 |
| Over 1.35 mm | Open | 2 – 3 |
Most student mouthpieces sit in the medium-closed to medium range, which is why a 2.5 or 3 works for so many developing players. Many orchestral players prefer a closed or medium-closed tip with a firmer reed for a centered, stable sound, while many jazz and contemporary players go more open with a softer reed for flexibility.
How brands compare
Because every maker uses its own scale, the same number feels different across brands. The comparisons below are approximate and widely reported by players and retailers, but individual boxes vary, so always confirm by playing.
| Brand / cut | Compared with Vandoren Traditional of the same number |
|---|---|
| Vandoren Traditional | Reference point |
| Vandoren V12 | Similar to slightly harder; thicker tip gives a darker, more resistant feel |
| Vandoren 56 Rue Lepic | Slightly harder, with a heavier heart |
| D’Addario Reserve | About the same |
| D’Addario Reserve Classic | About the same to slightly harder |
| D’Addario (Rico) Clarinet, orange box | Softer, often about a half strength |
| Légère synthetic | Often chosen a quarter to a half strength softer than your cane number |
When you switch brands, buy two adjacent strengths if you can (for example a 3 and a 3.5) and compare them on your own mouthpiece. Our reed compatibility guide goes deeper into matching cuts to mouthpieces.
Signs your reed is too soft or too hard
| Too soft | Too hard |
|---|---|
| Bright, buzzy, or thin tone | Airy, fuzzy, or stuffy tone |
| Pitch sags flat, especially in the upper register | Pitch runs sharp and feels rigid |
| Reed closes up or chokes at loud dynamics | Soft dynamics are hard to start or do not speak |
| High notes feel pinched and unstable | Low notes are slow to respond and feel resistant |
| You have to bite to hold the pitch up | Your embouchure tires quickly and you run out of air |
If the symptom is squeaking rather than tone, the reed may be warped, chipped, or badly placed rather than the wrong strength. Check our step-by-step squeak fix guide before changing strength.
A 10-minute reed strength test
You can find your strength in one practice session. Pick three reeds: your current strength, a half strength softer, and a half strength harder. Wet all three, play each for a minute to settle it, then run the same short checklist on each.
- Low E to low F, pianissimo. Does the note start cleanly and softly? A reed that is too hard will struggle here.
- Open G to throat B♭, then crossing to B. Is the throat register clear and the break smooth? See crossing the break for what to listen for.
- Clarion C to high C, forte. Does the sound stay full and on pitch, or does it thin out and sag? A reed that is too soft will fail here.
- A crescendo from pianissimo to fortissimo on one note. The right reed stays in tune and keeps its color across the whole range.
- Thirty seconds of your hardest passage. Articulation should feel clean without extra effort.
The right strength is the one that passes all five with the least effort, not the hardest one you can make sound. Record yourself if possible; the difference is often clearer on playback than in the room. For a fuller routine, see our step-by-step reed selection guide.
Pro Tip: A reed that is just slightly too hard can often be balanced with a little sanding or a reed knife. Our reed adjustment guide shows you how, before you give up on a whole box.
When to move up a strength
Move up a half strength when your current reeds start to show the “too soft” signs consistently, not just on one reed, and when your air support has grown enough that the reed closes up at loud dynamics or sags in the upper register. For most students this happens every six months to a year in the first few years, then slows down or stops.
Do not move up because a friend plays a harder reed, because a new box feels soft (it may just be a soft box), or because of the number alone. And if you change to a more closed mouthpiece, expect to go up; if you change to a more open one, expect to go down.
Key Takeaways
| Point | Details |
|---|---|
| Strength is stiffness, not skill | A harder reed is not a sign of a better player; the right reed is the one that balances your setup. |
| Typical ranges | Beginners 2–2.5, students 2.5–3.5, advanced players 3–4, with lots of overlap. |
| The mouthpiece matters most | Open tips need softer reeds; closed tips need harder reeds. Change mouthpiece, re-check your reed. |
| Brands differ | Rico runs softer, V12 and 56 Rue Lepic a bit harder, synthetics are often chosen slightly softer. |
| Test, don’t guess | Compare three adjacent strengths with the same five-step checklist and pick the easiest reed that passes all of it. |
FAQ
What reed strength should a beginner clarinetist use?
Most beginners start on a 2 or 2.5 on a medium-closed student mouthpiece. Move to a 2.5 or 3 once low notes speak easily and the student can play into the upper register without the reed closing up.
Is a 3 reed hard for clarinet?
No. A 3 is a middle strength and one of the most common choices for intermediate and advanced players. Whether it feels hard depends on your mouthpiece’s tip opening and the brand.
What strength reeds do professional clarinetists use?
Most professionals play somewhere between 3 and 4.5, and many play 3.5. The exact choice follows their mouthpiece: closed-tip setups take harder reeds, more open setups take softer ones.
Do synthetic reeds use the same strength numbers?
They use similar numbers, but many players choose a synthetic a quarter to a half strength softer than their cane reed. Some mouthpieces are designed to work especially well with synthetic reeds.
Why does every reed in the box feel different?
Cane is a natural material, and each strength grade covers a range of stiffness. Rotate and sort your reeds, and see our reed care workflow for how to break them in and keep them consistent.
Match your reed and mouthpiece
If you have tried three strengths and none of them feels right, the problem may be the mouthpiece, not the reed. A mouthpiece with the right tip opening for your air and embouchure lets you play a comfortable reed and still get a full, centered sound.
Gleichweit Bb mouthpieces are grouped by tip opening so you can match them to the reeds you already like. Players who prefer firmer reeds usually gravitate to the Closed-Tip Test Box (1.04–1.20 mm), which includes models like our best-selling B7-4. Players on a 3 or 3.5 often find their match in the Medium-Tip Test Box (1.17–1.24 mm), and those who like a softer reed and more flexibility try the Open-Tip Test Box (1.27–1.40 mm). Not sure? The Variety Test Box puts five different tip openings in your practice room for a week, with your own reeds, so you can hear which combination sounds most like you.
The best reed strength is the one you stop thinking about. Find the right match, and you can spend your practice time on music instead of equipment.