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10 Best Decibel Meters 2025 in the United States

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Our Top Picks

#1

Winner

Decibel Meter, TopTes TS-501B Sound Level Meter with 2.25” Backlit LCD Screen, Portable SPL Tester with A/C Weighted, Range 30-130dB, MAX/MIN, Data Hold, Use for Home, Noisy Neighbor, Factory - Orange

Rating
10.0
Chosen by1,156
Frequency Range
Measurement Range
Weighting Filters

Most important from
1901 reviews

Frequency Range
The frequency response is in line with the specifications and not a defect of the instrument.
Measurement Range
The capture and hold feature, along with Max and Min functions, make tracking sound levels easy.
Weighting Filters
Both slow and fast sampling options, along with A and C sound level weighting, provide versatility.

The TopTes TS-501B decibel meter is designed for anyone needing to measure sound levels accurately, making it suitable for homeowners, factory workers, and even those monitoring noise in schools or workshops. One of its standout features is the A/C weighting, which allows for precise sound measurement across a range of 30 to 130 dB, with an accuracy of 1.5 dB, covering frequencies from 30 to 8000Hz. This makes it versatile for different environments, whether you're dealing with noisy neighbors or tuning your audio system.

The 2.25-inch backlit LCD screen is another advantage; it's easy to read in various lighting conditions, which can be particularly helpful when you're trying to capture sound levels in dimly lit areas. Features like the MAX/MIN measurement function and data hold capability add to its ease of use, allowing you to track sound peaks effectively.

On the practical side, the TopTes TS-501B is portable and lightweight, weighing just under 10 ounces. It runs on three AAA batteries (included) and comes with a low battery indicator to alert you when it’s time for a replacement. The automatic power-off feature helps save battery life, which is a thoughtful addition for frequent users.

Rating
10.0
Chosen by1,156
Frequency Range
Measurement Range
Weighting Filters

Most important from
1901 reviews

Frequency Range
The frequency response is in line with the specifications and not a defect of the instrument.
Measurement Range
The capture and hold feature, along with Max and Min functions, make tracking sound levels easy.
Weighting Filters
Both slow and fast sampling options, along with A and C sound level weighting, provide versatility.
#2

Extech 407730-NIST Digital Sound Level Meter 40-130dB with NIST

Rating
9.4
Accuracy

Most important from
2 reviews

Accuracy
The instrument's NIST certification is a reassuring feature, ensuring reliable and accurate measurements.

The Extech 407730-NIST Digital Sound Level Meter is designed to measure sound levels accurately. With a 2dB accuracy and a 0.1dB resolution, it ensures precise readings. It supports both A and C weighting filters, making it versatile for different types of noise measurements. The meter can record maximum and minimum values over time, which is useful for monitoring changes in noise levels. The inclusion of an AC analog output allows for connection to other devices for further analysis.

It uses a durable 0.5-inch electret condenser microphone to capture sound clearly. The LCD display provides a clear and easy-to-read interface, and the meter is powered by 4 AAA batteries, which are included in the package. Calibration is required for ensuring continued accuracy, and the product comes with a certificate of traceability to NIST for assurance of its measurement standards.

However, the device is quite bulky at 4.4 pounds and with dimensions of 5 x 1.75 x 11.5 inches, which could make it less portable. Additionally, it may not be the most up-to-date model available, as it was first released in 2009. Despite these drawbacks, the Extech 407730-NIST is a reliable tool for professionals needing accurate sound level measurements, reinforced by its traceability certification.

Rating
9.4
Accuracy

Most important from
2 reviews

Accuracy
The instrument's NIST certification is a reassuring feature, ensuring reliable and accurate measurements.
#3

REED Instruments R8070SD Data Logging Sound Level Meter

Rating
9.4
Calibration

Most important from
8 reviews

Calibration
The meter came perfectly calibrated, though purchasing the Reed calibration tool is recommended for ongoing accuracy.

The REED Instruments R8070SD is a solid choice for anyone needing a reliable sound level meter, especially in environments where accurate sound measurement is crucial. Its high accuracy of ±1.0dB at 1kHz is impressive and meets Type 2 standards, making it suitable for professional use. With a measurement range that offers a dynamic range of 50dB, it can effectively capture varying sound levels, which is beneficial for a range of applications from industrial noise assessments to environmental monitoring.

One of the standout features is its data logging capability, with an integrated SD memory card. This allows users to record sound levels over time, making it ideal for long-term studies or monitoring. The inclusion of A & C frequency weighting and fast & slow time weighting options provides flexibility in how sound is measured, catering to different measurement needs.

The display and interface are user-friendly, which is a significant advantage for those who may not be tech-savvy. It also comes with practical accessories like a windshield ball to reduce wind noise and a soft carrying case for easy transportation. However, there are a few drawbacks to consider. While the accuracy and features are commendable, it operates on automatic mode only, which may limit users who prefer manual control over their measurements. Lastly, while the weight of 1 pound makes it portable, the size might not be as compact as some users would like for on-the-go measurements.

Rating
9.4
Calibration

Most important from
8 reviews

Calibration
The meter came perfectly calibrated, though purchasing the Reed calibration tool is recommended for ongoing accuracy.

Buying Guide for the Best Decibel Meters

When choosing a decibel meter, it's important to understand the key specifications that will help you find the best fit for your needs. Decibel meters, also known as sound level meters, are used to measure the intensity of sound in decibels (dB). They are essential tools for various applications, including workplace noise assessments, environmental noise monitoring, and audio system calibration. To make an informed decision, you need to consider several key specifications that determine the performance and suitability of the decibel meter for your specific use case.
AccuracyAccuracy refers to how close the measurements of the decibel meter are to the actual sound levels. This spec is crucial because it determines the reliability of the data you collect. Accuracy is usually expressed as a margin of error, such as ±1 dB. For general use, an accuracy of ±2 dB is often sufficient. However, for professional applications like occupational health and safety assessments, you may need a meter with higher accuracy, such as ±1 dB or better. Consider your specific needs and the level of precision required for your measurements when evaluating accuracy.
Frequency RangeThe frequency range indicates the range of sound frequencies that the decibel meter can accurately measure. This is important because different sounds have different frequencies, and you want a meter that can capture the full spectrum relevant to your application. A typical frequency range for general-purpose decibel meters is 20 Hz to 20 kHz, which covers the range of human hearing. If you are measuring specific types of noise, such as industrial machinery or musical instruments, ensure the meter's frequency range includes those frequencies. Choose a meter with a frequency range that matches the sounds you need to measure.
Measurement RangeThe measurement range specifies the range of sound levels that the decibel meter can measure, usually expressed in decibels (dB). This is important because it determines the loudness levels the meter can handle. For example, a measurement range of 30 dB to 130 dB is common and suitable for most environments, from quiet rooms to loud industrial settings. If you need to measure very quiet or very loud sounds, look for a meter with an extended measurement range. Consider the typical sound levels in your environment and choose a meter with a measurement range that covers those levels.
Weighting FiltersWeighting filters, such as A-weighting, C-weighting, and Z-weighting, are used to adjust the meter's response to different frequencies to match human hearing or specific measurement standards. A-weighting is the most common and is used for general noise measurements, as it mimics the human ear's sensitivity to different frequencies. C-weighting is used for measuring peak sound levels, and Z-weighting provides a flat response across all frequencies. Depending on your application, you may need a meter with multiple weighting filters. For general use, a meter with A-weighting is usually sufficient, but for more specialized measurements, consider a meter with additional filters.
Display and InterfaceThe display and interface of the decibel meter determine how easy it is to read and interpret the measurements. A clear, backlit display is important for reading measurements in various lighting conditions. Some meters also offer digital interfaces, such as USB or Bluetooth, for connecting to computers or mobile devices for data logging and analysis. Consider how you will use the meter and whether you need features like data storage, real-time data transfer, or advanced analysis capabilities. Choose a meter with a display and interface that meets your needs for ease of use and functionality.
CalibrationCalibration ensures that the decibel meter provides accurate measurements over time. This is important because the accuracy of the meter can drift due to environmental factors or regular use. Some meters come with a built-in calibration feature, while others require an external calibrator. Regular calibration is essential for maintaining the accuracy and reliability of your measurements. If you need precise and consistent data, choose a meter that is easy to calibrate and consider the availability of calibration services or accessories.

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