The 9 Best Interval Timers
This review has been updated 16 times since it was first published in May of 2021. These interval timers can help both serious and casual athletes maximize their training routines. They can be programmed for whatever periods work best for you, and can also be used to accurately time the rounds of any sporting engagement, such as a boxing match or MMA bout. We’ve included wall-mountable, clip-on and pocket-sized options in a range of designs good for indoors and out.
9. Leap TF6204
The Leap TF6204 is small enough to fit in a pocket or to hook onto your shirt or pants using the convenient built-in clip. It is ideal for keeping yourself in check during a personal workout, though the alarm volume is too low to hear over music.
- Uses a standard aaa battery
- Very low price point
- Operation isn’t intuitive
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8. FCXJTU Digital YS391
While the FCXJTU Digital YS391 may be marketed more for kitchen use, it has all the capabilities needed for fitness, too, making it a versatile option. It can count down two different events simultaneously, and features an adjustable alarm volume.
- Built-in flashlight
- Handy magnetic back
- Cannot clip it onto clothing
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7. BTBSign CFT023
The BTBSign CFT023 allows you to set multiple training and rest time groups, so you won’t need to constantly reprogram it just because you are switching workouts. Its stopwatch feature is accurate to 1/100th of a second, and it comes with wall-mounting hardware.
- 12- and 24-hour time format
- Can be set up for emom routines
- Includes a remote control
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6. Casio STL-S110H-1BCF
If you’d rather not deal with carrying something during your HIIT routines, consider the Casio STL-S110H-1BCF. It is a solar-powered watch with a dual countdown function, five daily alarms, and a tough resin case for standing up to the inevitable impacts.
- Scratch-resistant mineral window
- Can be worn while swimming
- Reliable quartz movement
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5. Seiko S057
The Seiko S057 sports a traditional stopwatch design, so most people will already be familiar with its operation. It is equipped with a lithium battery and an automatic shutoff function to ensure the battery lasts, and is conveniently water-resistant, too.
- Two channel countdown clock
- Allows for split-lap timing
- 100-lap capability
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4. Honmax 8200
The Honmax 8200 has a brightly-backlit display, so it is suitable for both daytime and nighttime workouts, indoors or out. It offers a maximum countdown of 100 hours, and comes in eight colors, so you can match it to your favorite running outfit.
- Battery lasts up to 6 months
- Chime and vibration alerts
- Also good for cooking
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3. Synergee Premium
The Synergee Premium is wall-mountable option that is available in two sizes, 16 or 29 inches long, which means there is one well-suited to your exercise room, however large or small that may be. For convenience, it is preprogrammed with multiple workout schedules.
- Can be set to count up or down
- Also has a stopwatch function
- 100-percent money-back guarantee
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2. Gymboss Plus
The Gymboss Plus can be clipped to your clothing or worn like a watch using the included strap, making it convenient to use during any workout. It is water-resistant, too, so it is perfect for outdoor runs when there is a chance you might get caught in the rain.
- Adjustable alarm volume and duration
- A vibration mode
- 2-second to 99-minute range
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1. GymNext Flex
The GymNext Flex is ideal for commercial facilities. Conveniently, it connects to phones via Bluetooth for not only setting up and controlling your workout times, but also for audio syncing, so your music will fade in and out at the start and end of each round.
- Loud 95-decibel buzzer
- Large four-inch digits
- Two-color display
