If you’re looking for a cost-effective way to pair a smartphone to a car via Bluetooth, you’ve come to the right place. Bluetooth FM transmitters are affordable and simple devices that let you stream audio from a phone to a car, along with the ability to make and answer phone calls. This allows you to connect a phone to a car’s stereo without running any extra wires or investing into more expensive Bluetooth kits.

Basically, a Bluetooth FM transmitter plugs into the car’s cigarette lighter and then transmits the audio from a phone to the car’s stereo by tuning to the same FM signal. The phone itself is directly connected to FM transmitter via Bluetooth, and the Bluetooth FM transmitter converts the audio from the phone to an FM signal.

Setting up a Bluetooth FM transmitter is fairly simple: find an FM signal on the car’s stereo that isn’t being used and set that signal to both the device and the car. Once a phone is paired to the device, it’ll send the audio straight to the car. This does mean that you should check to make sure there are open FM signals in your area before purchasing a Bluetooth FM transmitter—you can easily search online for clean FM signals in your area.

While shopping for a Bluetooth FM transmitter, you’ll likely notice that many of the products are very similar. Most will offer USB charging ports for your devices, while others will allow you to play media files straight from a memory card or USB flash drive. Choosing the right one for you may even just come down to price or style, as all the products on our list are extremely popular on Amazon and have majority five-star reviews.

1. Editor's Pick: Nulaxy KM18 Bluetooth FM Transmitter

nulaxy bluetooth fm transmitter

As we mentioned before, most of the Bluetooth FM transmitters on our list are very similar. But if we had to pick one overall winner, it would be the Nulaxy KM18. With nearly 16,000 reviews on Amazon, it’s an extremely popular product and is available at a very competitive price. Sporting a nice 1.44″ screen that displays phone calls, music, and your car’s battery voltage, the Nulaxy KM18 also features a 2.1A USB charging port for your device. It’s also compatible with TF memory cards for playing media, or if you want to directly connect a device via AUX cable. Advanced noise reduction technology helps deliver clear audio.

The KM18 features a voltmeter that will show the condition of your car’s battery. It’s not exactly a feature you’d expect from a Bluetooth FM transmitter, but several of them do have it. Consider it an added bonus.

Product features:

  • 1.44″ screen
  • 5V/2.1A USB charging port
  • Compatible with TF memory cards
  • AUX cable port
  • Reads car’s battery voltage
Read More Best Bluetooth Car Kits

2. IMDEN Bluetooth FM Transmitter

imden bluetooth fm transmitter

For a simpler design, IMDEN’s Bluetooth FM transmitter features a pair of USB charging ports, one of which is a Quick Charge (QC) 3.0 port. A high-performance microphone equipped with CVC noise suppression technology makes phone calls nice and clear, while a single button makes it easy to answer, redial, or end those calls. This Bluetooth FM transmitter also supports voice navigation from your phone, which means it’ll stream the audio from your navigation app to your car.

For media playback, you can also insert a USB flash drive with MP3 files into one of the USB ports. This device from IMDEN also comes with an array of safety features including overcurrent protection, overvoltage protection, intelligent temperature control, and short circuit protection. It will also display your car’s battery voltage on startup.

Product features:

  • 2 USB charging ports (including 1 Quick Charge 3.0 port)
  • High-performance microphone with CVC noise suppression technology
  • Supports voice navigation of your phone
  • Compatible with USB flash drives
  • Reads car’s battery voltage
  • Safety features include overcurrent protection, overvoltage protection, intelligent temperature control, short circuit protection

3. VicTsing Bluetooth FM Transmitter

victsing bluetooth fm transmitter

Another option with a 1.44″ screen comes from VicTsing. This Bluetooth FM transmitter also supports media playback from memory cards, USB flash drives, or another device connected through a 3.5mm audio cable. Dual USB charging ports can be found, including one 2.1A port for fast charging. The screen displays the incoming phone number for calls, voltage level on your car’s battery, volume, the FM frequency, and the file name if you’re playing an MP3 file from a memory card or USB flash drive.

It also comes equipped with a flexible neck with 120° adjustment for the ideal viewing angle. CVC noise suppression technology contributes to clear phone calls.

Product features:

  • 1.44″ screen
  • Plays music from multiple sources: Bluetooth, memory cards, USB flash drives, 3.5mm audio cable
  • Dual USB charging ports (including one 5V/2.1A fast charging)
  • 120° angle adjustment
  • CVC noise suppression technology
  • Reads car’s battery voltage

4. LIHAN Bluetooth FM Transmitter

lihan bluetooth fm transmitter

This device from LIHAN is fairly basic, but it does feature a pair of USB charging ports, one 3.1A and one 1A. You can quickly answer or dismiss phone calls with a single push of a button. Compatible with Bluetooth 4.0 and below, LIHAN’s transmitter also reads your car’s battery voltage and is compatible with USB flash drives and TF memory cards for media playback. CVC noise suppression technology contributes to clear hands-free calling.

Product features:

  • Dual USB charging ports (3.1A and 1A)
  • Built-in microphone for hands-free phone calls
  • Reads car’s battery voltage
  • Compatible with memory cards and USB flash drives
  • Bluetooth 4.0
  • CVC noise suppression technology

5. LDesign Bluetooth FM Transmitter

ldesign bluetooth fm transmitter

One of the more stylish options on our list is this transmitter from LDesign. It’s one of the few devices with Bluetooth 5.0 technology, which delivers a more stable connection with your device. CVC noise suppression contributes to clear phone calls, along with echo-cancellation to reduce background noise. This product is also able to send voice navigation audio from your device to your car, as well as media playback from a USB flash drive, TF memory card, or a device connected via a 3.5mm audio cable. As an added bonus, LDesign’s transmitter will also read your car’s battery voltage.

Perhaps the most appealing feature of this device is that LDesign offers a lifetime warranty.

Product features:

  • Bluetooth 5.0
  • CVC noise suppression technology
  • Compatible with memory cards and USB flash drives
  • Echo-cancellation reduces background noise
  • Reads car’s battery voltage
  • Lifetime warranty
Read More Best Satellite Radio Receivers for Cars

6. Sumind Bluetooth FM Transmitter

sumind bluetooth fm transmitter

If you’re looking for a more premium option, Sumind’s Bluetooth FM transmitter should fit your needs. Featuring a large 1.7″ LCD backlit screen, this device also has an adjustable 270° gooseneck so you can get the perfect viewing angle. It’s equipped with a pair of USB charging ports, a 2.4A and a QC3.0 compatible port. The screen displays information such as the song name, incoming phone numbers, and your car’s battery voltage at startup.

Supported media playback includes devices connected via a 3.5mm audio cable, TF and microSD memory cards, and AUX output. CVC noise suppression technology along with adopted advanced interference and noise cancellation helps ensure your phone calls are as clear as possible. This device features Bluetooth 4.2 with EDR, which is Enhanced Data Rate for faster data transmission.

Product features:

  • 1.7″ LCD backlit screen
  • Dual USB charging ports (2.4A / QC3.0)
  • Reads car’s battery voltage
  • 270° adjustable gooseneck
  • Supports 3.5mm audio cable, memory cards, AUX output
  • CVC noise suppression technology
  • Bluetooth 4.2 with EDR (Enhanced Data Rate for faster data transmission)

7. Criacr Bluetooth FM Transmitter

criacr bluetooth fm transmitter

Available in black, grey, red, and light blue, Criacr’s offering may be for you if you want to choose from a variety of colors to match your car’s interior. Equipped with dual USB charging ports (5V), this transmitter also features CVC noise suppression technology and is compatible with SD and TF memory cards for media playback. You can also plug in a USB flash drive loaded with MP3 files.

Product features:

  • CVC noise suppression technology
  • Compatible with memory cards and USB flash drives
  • Dual USB charging ports (5V)
  • Supports A2DP
Read More Best Car Stereos

8. ZEEPORTE Bluetooth FM Transmitter

zeeporte bluetooth fm transmitter

If you don’t want anything fancy and simply want a device you can plug in and quickly setup, look at ZEEPORTE’s transmitter. Featuring a pair of USB charging ports (2.4A and 1A), this basic FM transmitter has CVC noise suppression technology to help make your phone calls nice and clear. It’s also compatible with USB flash drives for media playback. No real bells and whistles with this device—it simply works as a basic Bluetooth FM transmitter.

Product features:

  • Dual USB charging ports (2.4A / 1A)
  • CVC noise suppression technology
  • Compatible with USB flash drives
  • Supports A2DP

9. Nulaxy NX09 Bluetooth FM Transmitter

nulaxy bluetooth fm transmitter

Nulaxy is so popular in this segment that we had to include another one of its products, the NX09. Available in silver or black, this transmitter doesn’t sport the fancy screen seen in our top pick, but it is a Bluetooth 5.0 device and has a QC3.0 USB charge port. The 7-color backlit LED display gives you a bit of customization, allowing you to choose from red, green, blue, yellowish green, purple, cyan, and silver white.

For media playback, this device supports USB flash drives and microSD cards, while Nulaxy noise-cancellation technology helps deliver crisp, clear phone calls. A built-in voltmeter also reads your car’s battery voltage. Take advantage of Apple’s Siri or Google Assistant with voice-activated navigation with this device.

Product features:

  • USB QC3.0 charging port
  • Reads car’s battery voltage
  • Bluetooth 5.0
  • Noise-cancellation technology
  • Compatible with memory cards and USB flash drives
  • 7-color backlit LED display
Read More Best Bluetooth OBD2 Scanners

10. Vproof Bluetooth FM Transmitter

vproof bluetooth fm transmitter

By no means is Vproof’s transmitter a bad one just because it’s at the bottom of our list. Like we mentioned before, many of these Bluetooth FM transmitters are very similar and most are priced within the same range. Vproof’s device features a pair of USB charging ports (2.4A and 1A) and is equipped with Bluetooth 4.2 technology. It supports voice navigation and can play media from TF memory cards and USB flash drives.

CVC noise suppression technology helps deliver clear audio. This transmitter will also display your car’s battery voltage on startup.

Product features:

  • Dual USB charging ports (2.4A / 1A)
  • CVC noise suppression technology
  • Compatible with memory cards and USB flash drives
  • Reads car’s battery voltage
  • Bluetooth 4.2
  • Supports voice navigation

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