10 Best Heart Rate Monitors for Interval Training in 2026: Accurate Picks for Every Workout

Interval workouts demand responsive heart-rate data, whether you are sprinting through short repeats, climbing hills, or alternating hard efforts with recovery. The right monitor can help you judge intensity without relying only on pace or perceived exertion.

We compared 10 popular chest-strap and armband monitors for connection options, sensor design, comfort, workout compatibility, and practical training features. This guide helps you choose a reliable heart rate monitor for interval training without paying for features you will not use.

Best 10 Heart Rate Monitor for Interval Training Picks for 2026

Best Armband Pick – Wahoo TICKR FIT

If you want a heart rate monitor for interval training without wearing a chest strap, the Wahoo TICKR FIT uses optical sensing on the arm and connects to phones, GPS devices, and compatible apps through Bluetooth or ANT+.

Best For: Runners and gym users who prefer a comfortable armband with real-time heart rate, calorie, and workout-duration tracking.

Pros:

• Bluetooth and ANT+ connectivity supports smartphones, GPS devices, and training apps.
• Optical arm sensor avoids the need for a chest strap.
• Rechargeable battery provides up to 35 hours of use.
• Includes adjustable small and large bands and has an IPX7 rating.

Cons:

• Does not include a built-in display for viewing heart rate.
• Optical armband sensing may not suit shoppers who specifically prefer chest-strap sensors.

The TICKR FIT is a practical, low-profile option for interval sessions when app connectivity and wearing comfort matter more than advanced training metrics.

Best Advanced Chest Strap – Garmin HRM 600

For data-focused athletes choosing a heart rate monitor for interval training, the Garmin HRM 600 adds real-time heart rate and HRV data, workout recording, and detailed running dynamics when paired with compatible devices.

Best For: Garmin users who want advanced running metrics, stored workouts, and long battery life for training across multiple activities.

Pros:

• Transmits heart rate and HRV data to compatible Garmin devices, equipment, and apps.
• Stores workouts when a watch cannot be worn and syncs data to Garmin Connect.
• Supports running dynamics such as stride length, vertical oscillation, and ground contact time balance with a compatible smartwatch.
• Rechargeable battery lasts up to two months, and the strap is machine washable.

Cons:

• Several advanced running features require a compatible Garmin smartwatch.
• Its data-heavy feature set may be more than casual interval trainees need.

The HRM 600 is the strongest choice here for athletes building structured, metric-driven workouts within the Garmin ecosystem.

Most Versatile Sensor – Polar H10

The Polar H10 is a strong heart rate monitor for interval training when measurement precision and connection flexibility are priorities. Its chest strap supports Bluetooth, ANT+, and 5 kHz connectivity for a broad range of equipment and apps.

Best For: Athletes who want a highly accurate chest-strap sensor with waterproofing, internal memory, and multiple simultaneous connection options.

Pros:

• Designed for high-precision heart rate measurement.
• Supports Bluetooth, ANT+, and 5 kHz connections, including simultaneous Bluetooth and ANT+ use.
• Waterproof design and internal memory support varied workouts.
• Included CR2025 battery provides up to 400 hours of battery life.

Cons:

• Requires wearing a chest strap, which some users may find less convenient than an armband.
• Uses a replaceable button-cell battery rather than a rechargeable battery.

With broad compatibility and excellent stated battery endurance, the H10 is a dependable pick for interval training across gym equipment, phones, and sports applications.

Best Simple Garmin Strap – Garmin HRM 200

The Garmin HRM 200 keeps a heart rate monitor for interval training straightforward, transmitting real-time heart rate and HRV data to compatible Garmin devices, fitness equipment, smartphones, and apps.

Best For: Garmin users who want reliable heart rate and HRV tracking, a durable washable strap, and minimal battery maintenance.

Pros:

• Transmits real-time heart rate and HRV data to compatible devices and apps.
• User-replaceable battery lasts up to one year.
• Machine-washable strap simplifies cleaning after intense sessions.
• 3 ATM water rating adds durability for regular training.

Cons:

• It is a chest-strap design rather than a watch or armband.
• Compatibility is centered on compatible Garmin devices, equipment, and apps.

The HRM 200 is a sensible, lower-maintenance option for interval trainees who want essential Garmin heart rate data without the HRM 600’s broader advanced feature set.

Best Arm-Band Pick – COROS Heart Rate Monitor

The COROS Heart Rate Monitor is a comfortable option for athletes seeking a heart rate monitor for interval training without the feel of a chest strap. Its Bluetooth-only connection, wear detection, and support for up to three paired devices make it practical for organized workout setups.

Best For: Athletes who prefer an armband and use Bluetooth-compatible watches, apps, trainers, or fitness equipment.

Pros:

• Soft, breathable armband with an adjustable fit for 9.4- to 16.9-inch arms.
• Connects to up to three devices simultaneously through Bluetooth.
• Offers 38 hours of operation, wear detection, and a sensor that is easy to remove for cleaning.

Cons:

• Bluetooth-only; it is not compatible with ANT+.
• Designed for sports and activities rather than daily heart-rate tracking.
• A USB charging cable is included, but a Type-C adapter is not.

Choose this model if armband comfort and automatic workout readiness matter more to you than ANT+ support. It is especially suitable for interval sessions built around compatible Bluetooth devices.

Best Value Chest Strap – Polar H9 Heart Rate Sensor

The Polar H9 is a straightforward heart rate monitor for interval training, built around a chest strap and high-accuracy sensor. Its broad compatibility with HRM-enabled equipment and smartphone apps makes it a flexible choice for tracking structured workouts.

Best For: Runners, gym users, and app-based athletes who want a traditional chest strap with long battery life.

Pros:

• Uses Polar’s established high-accuracy heart-rate sensor technology.
• Works with HRM-compatible equipment and popular smartphone apps.
• CR2025 battery provides up to 400 hours of average battery life.
• Available in XS-S and M-XXL sizing options.

Cons:

• Uses a replaceable CR2025 button-cell battery rather than a rechargeable battery.
• The chest-strap format may be less comfortable for users who prefer an armband.
• Size selection is required, with the larger option covering 26-36 inches.

The H9 is a practical pick for buyers who value compatibility and extended battery life. It lacks rechargeable convenience, but its conventional strap and app support suit repeat interval-training sessions.

Best Connected Chest Strap – Wahoo TRACKR HEART RATE

The Wahoo TRACKR HEART RATE is a connected chest-strap heart rate monitor for interval training, combining ECG sensing with Bluetooth and ANT+ support. Its rechargeable battery, multiple Bluetooth connections, and secure fit are useful when workouts span apps, phones, and training equipment.

Best For: Athletes who need ANT+ and Bluetooth connectivity for demanding indoor or app-based interval sessions.

Pros:

• Supports both Bluetooth and ANT+, with up to three Bluetooth connections at once.
• Rechargeable battery provides over 100 hours of active use; listed specifications cite up to 200 hours.
• Soft, slim strap is designed to stay secure during intense exercise.
• LEDs indicate heart-rate detection, battery status, and connection status.

Cons:

• Uses a chest-strap design rather than an armband.
• Battery-life figures vary in the supplied specifications, so actual runtime may depend on use.
• Listed warranty coverage is one year.

Consider the TRACKR when connection flexibility is a priority. Its ANT+ support gives it an advantage over Bluetooth-only monitors, while rechargeable power reduces the need for frequent battery replacement.

Best Overall Arm-Band Pick – Rhythm+ 2.0

The Scosche Rhythm+ 2.0 is a flexible heart rate monitor for interval training when you want dual Bluetooth and ANT+ connectivity without wearing a chest strap. Its optical sensor provides real-time tracking, while the adjustable arm band is designed to stay secure during demanding workouts.

Best For: Runners, cyclists, and gym users who want a comfortable arm-based monitor with broad device compatibility.

Pros:

• Connects through both Bluetooth Smart and ANT+ to watches, fitness equipment, and apps.
• Lightweight, breathable fit can be worn on the forearm, bicep, or tricep.
• Offers up to 24 hours of battery life and an IP68 waterproof rating.
• Supports RR interval data for compatible HRV apps such as HRV4Training and Welltory.

Cons:

• Its 24-hour battery life is shorter than the COOSPO H6 chest strap’s stated battery life.
• As an optical arm monitor, it may not suit users who specifically prefer a chest strap.

For interval sessions that involve repeated changes in intensity, the Rhythm+ 2.0 combines a secure fit, strong connectivity, and useful recovery-data support. It is the most versatile option here for athletes who want comfort without giving up platform compatibility.

Best Chest-Strap Value – COOSPO H6

The COOSPO H6 is a practical heart rate monitor for interval training when accurate real-time readings and long battery life matter most. Its chest strap uses Bluetooth and ANT+ transmission, making it suitable for sports watches, bike computers, fitness apps, and compatible gym equipment.

Best For: Cyclists and athletes who prefer a chest strap and want extended battery life for frequent training.

Pros:

• Provides stated ±1 BPM real-time heart rate data during exercise.
• Supports simultaneous Bluetooth and ANT+ connections across many devices and apps.
• Offers up to 300 hours of use with a replaceable CR2032 battery.
• Works with equipment and platforms including Peloton, Concept2, Garmin, Strava, and Zwift.

Cons:

• The electrode areas should be moistened before use for stable transmission.
• IP67 protection supports sweat and rain but the monitor should not be used for swimming or soaked.
• Users must separate the sensor from the strap after each workout.

The H6 is a strong choice for interval athletes who prioritize chest-strap measurement and low-maintenance battery replacement. Its broad compatibility is especially useful for indoor cycling, rowing, treadmill work, and bike-computer training.

Best Zone-Feedback Armband – COOSPO HW807

The COOSPO HW807 is a heart rate monitor for interval training that makes intensity changes easier to see through its heart rate zone LED indicator. Its optical sensor supports stated ±1 BPM tracking, Bluetooth 5.0, ANT+, and compatibility with numerous training apps and fitness devices.

Best For: Users who want quick visual heart-rate-zone feedback from a lightweight armband during workouts.

Pros:

• Uses different LED colors to indicate heart rate zones during exercise.
• Supports Bluetooth 5.0 and ANT+ for phones, watches, bike computers, and gym equipment.
• Tracks heart rate variability and provides stated ±1 BPM continuous exercise readings.
• IP67 protection and a 20-hour rechargeable battery support regular training.

Cons:

• The 20-hour battery life is shorter than the other listed monitors’ stated maximums.
• It is not recommended for swimming.
• The optical armband may not appeal to athletes who prefer chest-strap wear.

The HW807 stands out for interval workouts where visible zone feedback is more convenient than checking a watch or phone. It offers broad compatibility in a compact armband, though its shorter battery life favors users who recharge regularly.

How We Picked the Best Heart Rate Monitor for Interval Training

We focused on the features that matter most during changing effort levels: accurate readings, fast response to intensity shifts, secure fit, dependable wireless connections, and compatibility with common watches, phones, bike computers, and fitness apps. The lineup includes ECG chest straps for maximum responsiveness and optical armbands for users who prefer easier wear and less chest contact.

We also considered water resistance, battery or charging convenience, automatic wear detection, heart-rate zone tools, and support for both Bluetooth and ANT+. These details can make a noticeable difference when a monitor is used across running, cycling, rowing, gym, and indoor-training sessions.

Quick Comparison

Monitor type	Best suited to	Connectivity to look for
Chest strap	Maximum responsiveness and structured intervals	Bluetooth and ANT+
Upper-arm armband	Comfort and convenient everyday training	Bluetooth and ANT+
Advanced chest strap	Multi-sport athletes and detailed training data	Bluetooth, ANT+, and app support

Key Buying Factors for a Heart Rate Monitor for Interval Training

Sensor Accuracy and Response Time

Chest straps typically provide the quickest response during rapid changes between work and recovery intervals because they measure electrical signals closer to the heart. Optical armbands can be more comfortable and accurate enough for many users, but fit and skin contact strongly affect results.

Fit and Comfort

A strap should sit securely below the chest without slipping, pinching, or restricting breathing. An armband should stay in place during arm movement without feeling tight. For frequent workouts, comfort often matters as much as specifications because an uncomfortable monitor is less likely to be worn consistently.

Connectivity and Compatibility

Choose Bluetooth for phones, tablets, and many modern fitness machines; choose ANT+ when pairing with compatible bike computers or sports watches. Dual-band models offer the most flexibility. Check device limits if you plan to broadcast heart rate to several screens at once.

Battery, Charging, and Durability

Look for a battery system that matches your routine. Replaceable coin cells can be convenient for long-term use, while rechargeable models reduce battery purchases. Water resistance is important for sweaty sessions, outdoor training, and workouts in changing weather.

Training Features

Zone indicators, automatic wear detection, onboard storage, heart-rate variability support, and app integration can be useful, but they are not essential for everyone. Prioritize accurate live readings first, then select extras that fit your training platform.

Who Should Buy Which Heart Rate Monitor for Interval Training?

Choose a chest strap if you perform short, high-intensity intervals, need the fastest response, or want dependable readings for structured training. The Polar H10, Wahoo TRACKR, Garmin HRM models, Polar H9, and COOSPO H6 represent practical options across different feature levels.

Choose an armband if chest straps feel restrictive or you want a quick, comfortable monitor for running, gym work, and cycling. The Wahoo TICKR FIT, COROS, Scosche Rhythm, and COOSPO HW807 offer convenient alternatives with Bluetooth and ANT+ support.

Choose an advanced model if you train across multiple devices, track detailed performance metrics, or want additional automation and app features. Before buying, confirm compatibility with your watch, training app, and equipment, then select the most comfortable design you will actually wear for every interval session.