How it works: Class Dojo’s Noise Meter helps remind students what the appropriate volume should be in the classroom at specific times. The columns of the bar graph change in size and turn from green to yellow to red when the volume starts getting too high.

How it works: The noise meter at the bottom is reflected in the color of the sky and the emoji above. It changes from happy blue sky to dark clouds as the noise increases. Register with EdTech Monster to receive free access to Too Noisy Lite. Once you’re signed in, the meter starts automatically. We recommend using the Calibrate button in the Microphone settings menu for best results.

Want to make the most of your noise meter? Having a strategy for using it effectively can maximize the benefits. Every school and classroom is different, so take some time to consider what will work best for you and your students. Not sure where to begin? Here are some quick tips to help you get started.

How it works: Keep your learning space comfortable with this low-profile, highly accurate sound-level meter. When things get too loud, the meter politely reminds everyone to quiet down with a spoken “Quiet, please” alert. Plus, you have the option to customize the alarm threshold to suit the specific needs of your classroom.

Cool features: You can set a timer at the beginning if you like, turning this into a game to see if you can find the buried treasure without any noise violations.

Whenever you bring something new into the classroom, it’s important to remember that kids are naturally going to be curious. So, it might be a good idea to let them just get that initial excitement out of their systems. Once things settle down, share some expectations surrounding your new noise meter.

How it works: Imagine a traffic light that doesn’t just control cars but controls noise too! The Yacker Tracker is just that—a clever device designed to monitor sound levels wherever peace and quiet is needed. Simply set your desired noise limit and let the Yacker Tracker do the rest. When things get too loud, it’ll flash and sound an alarm, giving everyone a clear, immediate signal to lower their voices.

How it works: This simple noise level meter shows noise levels from green (good) to red (bad). The only setting you need to worry about is the microphone sensitivity. The meter starts automatically, so you’ll just need to adjust the microphone sensitivity as necessary.

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Cool features: The free version of this classroom noise monitor app is simple and effective. If you’d like to activate more features, you can download the paid version on your phone or tablet. The online Pro version has plenty of extras for a monthly fee.

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How it works: This is basically a coding project created using the popular coding platform Scratch. To start using Noise’O’Meter, you need to turn on your computer’s microphone. Noise’O’Meter takes the shape of a clock with a single hand that moves clockwise according to the noise level. The tool uses a color-intensity system to tag noise levels, starting with low levels (green) all the way to highest noise levels (red).

As you know, managing a classroom takes a lot of work. It’s much easier to do, of course, when it’s not super noisy. From research, we know that noise can have a negative impact on memory and reading skills, impair sustained attention and concentration, and increase stress levels. The effects can be particularly troublesome for kids with attention disorders or hearing impairments.

Are there any drawbacks? Of course. Aside from cost and reliability, a common complaint is that kids can get so fixated on keeping the monitor happy that it can distract them from doing their work. So, if you’re considering adding one to your classroom, it’s important to have a game plan.

Cool features: The large LCD display is easy to read, the monitor responds quickly to changes in the environment, producing true real-time sound levels, and the handy hanging holes make it easy to mount it on a wall. BurntSienna on Amazon says, “I got this so they could see for themselves as their volume increases. We set the alert fairly low at 85 decibels and it helps them to have an objective measure of their volume that is consistent, quick, and automatic. It’s wonderful.”

Cool features: Because this classroom noise monitor displays the “noise history” from start to finish, it’s a fun way to see just how often a class is passing the “noisy” threshold. Try it as a challenge: If a class can finish 30 minutes of group work without hitting the red a single time, they earn a prize.

How it works: A volume meter appears on the screen, changing to reflect the amount of noise in the classroom. If the noise crosses the max line, a pop-up on the screen states that you’ve been too loud. There’s no audible alert, only the visual warning. To get started, click “Try Now,” set the timer (or click the X button to skip it), set your max volume, and click Start.

Choosing a physical noise meter over a virtual one has some benefits. While you will need to pay for one, one of the biggest perks is that they provide a real, visual cue for students in the classroom. You also won’t need to worry about having access to the Internet or needing a power source (if you choose a model that’s chargeable or battery-operated).

Cool features: This decibel meter is designed for convenience and ease of use. You can use an AC adapter or 6 AA batteries (included), place it on a desk or mount it on a wall, and the backlit LCD digital display makes it easy to read in low-light conditions. T Dawg on Amazon says, “I need to save my voice for teaching so having a non-verbal indicator I can point or gesture to, in addition to a warning it gives off itself, is phenomenal. This meter is portable and comes with everything you need to operate it.”

Cool features: The visual and audio alerts are easy for kids of all ages to understand. Plus, it looks like a real traffic signal, making it a fun yet authoritative presence in any room. Amazon reviewer and art teacher Troy says, “It’s honestly helped me a lot so far. Just make sure you have clear rules about it to your students bc they WILL try to set it off on purpose to be silly and play around.”

Cool features: The Noise Meter is simple to use, with customizable microphone sensitivity, fun animations, and remote control via your phone.

How it works: The louder the classroom, the higher the balls fly! The goal is to keep the balls hanging out at the bottom. When the noise level rises too high, the program will alert students with a “Shh!” or loud beep—you choose.

Cool features: This noise monitor is equipped with a large LCD that includes a backlight for clear visibility in darker conditions. It offers customizable alerts and signals when noise levels exceed your predefined settings, ensuring you always have control over your acoustic environment. The automatic shutdown feature conserves power, making the device efficient and dependable for long-term use. Teacher Negadelphia says on Amazon, “Needed something to test noise levels in my gym during classes. This was the perfect meter.”

How it works: It might look a bit like a walkie-talkie, but this noise meter delivers precise sound level measurements and it’s easy to use! The Mode key allows you to quickly switch between Fast or Slow response times, while the Range key allows you to monitor the highest and lowest noise levels. This is a great choice if you just want something simple and affordable for your classroom.

Cool features: Calm Counter doesn’t have any fancy bells and whistles, and that can be a good thing. It’s extremely easy to use and the visual display makes it simple for kids to see when they’re being too noisy. ADVERTISEMENT

Cool features: You can change the balls to bubbles, emojis, or even eyeballs! This is also the only free classroom noise meter that has an audible alarm when kids pass the noise threshold.

Combined, the We Are Teachers editorial team has over 75 years of teaching experience across elementary, middle, and high school. We also work with a network of over 500 teacher writers and contributors to create the articles you see on our site. Learn more about writing for We Are Teachers and contributing to our social media channels.

How it works: This no-frills sound-level meter can be used indoors or outdoors and features a built-in alarm system consisting of a blinking indicator light and buzzer to alert you when noise levels exceed your set limits. It is powered by a DC 5V 1A Type-C USB cable and does not contain a battery (this is a common issue, so be sure to check if you have a compatible USB socket available before buying!).

It’s not surprising, therefore, that some teachers really like using noise monitors in the classroom. Should you give it a try? Let’s look at some of the benefits of using noise meters with kids.

Teachers use all sorts of strategies for managing classroom noise, and classroom noise meters are now one more tool to add to your bag of tricks. These use the microphone on your computer to let kids know when their sound level is appropriate and when it’s just too much. We’ve rounded up 12 of the best noise meters, and all of them are free and easy to use with your classroom computer and projector.

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Cool features: While it’s built to be both precise and practical, it’s easy to recalibrate if the readings ever seem off. You can put it on a desk or mount it on a wall to make it easy for everyone to see. It comes with a long USB cable, so it’s also easy to charge! Amazon reviewer and teacher Alyssa K Osayande says, “I bought this for my classroom because I found myself having to yell over the kids this helped so much!”

How it works: This classroom noise monitor is a Chrome extension that displays current sound levels in the background as it runs. Light shades indicate quiet, while darker gray means the classroom has gotten louder. When a red stripe displays, it means the noise has passed the maximum level (there’s no audible alert).

Online noise meters are virtual monitors that are great for use in the classroom. Since they’re accessible online, you won’t spend much time getting set up, and they are easy to access from any room in the school or outside. They’re also affordable as most are either free or low-cost and require little to no maintenance.

Cool features: Since Scratch is a collaborative community-based coding platform, members of the community have used Noise’O’Meter in their own projects creating what is known in Scratch lingo as Remixes. You can find these remixed projects on the right-hand side within the tool’s home page.

How it works: Keep an eye on classroom noise levels with this cool monitor that features a large, easy-to-read LED display. The screen shows real-time noise levels along with helpful temperature and humidity readings. The display brightness can be adjusted to meet your needs and the cute faces will let you know if it’s getting too loud in your room.