How to Choose the Best Bluetooth FM Transmitter

Your Guide to buying the best Bluetooth FM transmitters


Bluetooth FM transmitters are a great way to easily connect your phone, tablet, or other Bluetooth enabled device to your car's FM radio. From streaming music and making hands-free calls, to charging your device while you drive, there's a lot to consider when shopping for the best Bluetooth FM transmitter for your needs. This buying guide will provide an overview of the features and benefits to look for, as well as an explanation of the different types of Bluetooth FM transmitters available and how to choose the right one for you.

Key features

  1. Frequency Options - When shopping for a Bluetooth FM transmitter, one of the key features to consider is the range of supported frequencies. Different models support different frequencies, so it’s important to check the specifications of the model you’re considering to make sure it’s compatible with your car radio.
  2. Signal Strength - Signal strength is also an important feature to consider when selecting a Bluetooth FM transmitter. The stronger the signal, the better the sound quality you will experience when streaming content over your car radio.
  3. Connectivity - Many Bluetooth FM transmitters come with various types of connectivity options. Look for models that offer a range of connection types, such as USB, aux-in, and Bluetooth. This will ensure you can connect to a variety of different devices.
  4. Battery Life - Bluetooth FM transmitters typically require a power source, such as a car battery. It is important to check the battery life of a device to make sure it can last for long trips or extended periods of time.
  5. Additional Features - Many Bluetooth FM transmitters come with additional features, such as hands-free calling, auto power-off when not in use, and multiple USB ports. Be sure to check if the model you are considering offers these features to get the most out of your purchase.

See the most popular Bluetooth FM transmitters on Amazon

Important considerations


  • Wireless Connection: Bluetooth FM transmitters allow users to connect their devices wirelessly, making it easier to play audio without the hassle of connecting cords.
  • Voice Control: Some Bluetooth FM transmitters have voice control capabilities, allowing users to control the device with voice commands.
  • Auto-Tuning: Many Bluetooth FM transmitters are equipped with auto-tuning technology which enables the device to automatically search for and save available FM radio stations.
  • Convenience: Bluetooth FM transmitters provide a convenient way to play audio by broadcasting audio from a user's device over an FM radio station.
  • Quality and Durability: Bluetooth FM transmitters generally have a high-quality build and are designed to be durable and withstand long-term use.


  • Interference - Depending on the environment, some Bluetooth FM transmitters may experience interference from other radio signals.
  • Range - The operating range of a Bluetooth FM transmitter is typically limited to a few meters, making it unsuitable for long-distance transmissions.
  • Audio Quality - The audio quality of a Bluetooth FM transmitter can be lower than higher-end units.
  • Battery Life - The battery life of a Bluetooth FM transmitter is typically shorter than that of a wired unit.
  • Cost - Bluetooth FM transmitters tend to be more expensive than their wired counterparts.

Best alternatives

  1. Auxiliary Input Adapters - Auxiliary input adapters are a simple and effective way to get audio from a device to a car stereo without Bluetooth. They typically connect to the car stereo via a 3.5mm headphone jack input and connect to your device via a 3.5mm headphone jack output.
  2. Cassette Adapters - Cassette adapters are a classic way to get audio from a device to a car stereo without Bluetooth. They typically connect to the car stereo via a cassette deck and connect to your device via a 3.5mm headphone jack output.
  3. FM Modulators - FM modulators are devices that connect to a car stereo using an FM antenna and connect to your device using a 3.5mm headphone jack output. They then broadcast the audio from your device via an FM signal to the car stereo.
  4. Smartphone FM Transmitters - Smartphone FM transmitters are similar to traditional FM transmitters, but they are designed specifically to work with smartphones. They typically connect to the car stereo using an FM antenna and connect to the smartphone via a 3.5mm headphone jack output.
  5. CD Changers - CD changers are devices that allow you to store multiple CDs in a central location and then play them through your car stereo. They typically connect to the car stereo using an FM antenna and connect to the CD changer using a 3.5mm headphone jack output.

Related tools, supplies, and accessories

  • Bluetooth FM Transmitter - A Bluetooth FM transmitter is a device which streams audio from Bluetooth enabled devices to car radios.
  • 3.5mm Aux Cable - A 3.5mm Aux cable is typically used to connect a Bluetooth FM transmitter to the car radio.
  • Micro USB Cable - A Micro USB cable is a standard cord for charging the Bluetooth FM Transmitter.
  • Remote Control - Some Bluetooth FM Transmitters come with a remote control for controlling the device remotely.
  • Car Charger - Most Bluetooth FM Transmitters require a car charger to remain powered while in use.

Common questions

  1. What is a Bluetooth FM transmitter? A Bluetooth FM transmitter is a device that broadcasts audio from a Bluetooth-enabled device, such as a smartphone, to a car stereo.
  2. What are the benefits of using a Bluetooth FM transmitter? By using a Bluetooth FM transmitter, users can easily enjoy audio from their Bluetooth-enabled device on their car stereo without the need for any additional cables or connections.
  3. What type of devices can I connect to a Bluetooth FM transmitter? Almost any Bluetooth-enabled device, such as a smartphone, tablet, or laptop, can be connected to a Bluetooth FM transmitter.
  4. What frequency range do Bluetooth FM transmitters work on? Most Bluetooth FM transmitters work on the FM frequency range of 87.5-108 MHz.
  5. What features should I look for in a Bluetooth FM transmitter? When selecting a Bluetooth FM transmitter, look for features such as adjustable frequency, noise filtering, and auto-scanning. Additionally, look for a model that is easy to use and fits your car's stereo system.


In 2019, a team of researchers created a Bluetooth FM transmitter capable of producing sound across distances of up to 6.2 miles! The researchers tested the device in a rural part of the Netherlands and were able to successfully broadcast a Dutch song over the airwaves. This was the longest-range Bluetooth FM transmitter to date and a major milestone in wireless technology. The findings were published in the journal Electronics.

Disclaimer: This buying guide was not created by humans, and it is possible that some of it's content is inaccurate or incomplete. We do not guarantee or take any liability for the accuracy of this buying guide. Additionally, the images on this page were generated by AI and may not accurately represent the product that is being discussed. We have tried to convey useful information, but it is our subjective opinion and should not be taken as complete or factual.