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Interval Training Timers
What work-to-rest ratios mean, how common formats like Tabata, EMOM and boxing rounds are timed, and how to pick one.
Written by the QuickTimer editorial team. Published 3 November 2026. General information only.
Interval training alternates periods of effort with periods of rest. The pattern is set by a timer, which is why a good interval timer is the main piece of equipment. This guide explains the common ratios and formats so you can set up the interval timer for the workout you want.
Work-to-rest ratios
| Ratio | Example | Feel |
|---|---|---|
| 1:2 (rest is double) | 20 s work / 40 s rest | Very hard efforts with plenty of recovery |
| 1:1 (equal) | 30 s work / 30 s rest | Hard but repeatable; a common starting point |
| 2:1 (work is double) | 40 s work / 20 s rest | Steadier effort with short breaks; builds endurance |
| Tabata | 20 s work / 10 s rest, 8 rounds | All-out efforts; 4 minutes in total |
The longer or harder the work period, the more rest you generally need to repeat it at the same quality. If your effort drops sharply by round four, lengthen the rest or shorten the work.
Common formats
Tabata
Twenty seconds of very hard work, ten seconds of rest, eight rounds, four minutes in total. It is named after Izumi Tabata, a Japanese researcher who studied this pattern on athletes in the 1990s. In practice most people use it for exercises such as squats, burpees or rowing. It is intense, so build up to it with easier intervals first.
EMOM (every minute on the minute)
At the start of each minute, do a set number of repetitions. Whatever time is left in that minute is your rest. Because you set the work and the timer sets the clock, you get faster rest if you finish quickly. Use the 1 minute timer or set one-minute rounds in the interval timer.
Boxing and combat rounds
Three-minute rounds with one minute of rest are the standard pattern in professional boxing and in many gym classes. The boxing round timer lets you set the round length, the rest and the number of rounds, and gives a warning before each round ends.
Circuit training
Move through a series of stations, such as eight exercises at 40 seconds of work and 20 seconds of rest. The timer tells you when to change, so you never have to count.
Three beginner workouts to set up
| Workout | Work / rest | Rounds | Total time |
|---|---|---|---|
| Brisk walk and jog | 1 min jog / 2 min walk | 6 | 18 minutes |
| Bodyweight circuit | 30 s work / 30 s rest | 10 | 10 minutes |
| Short and sharp | 20 s work / 40 s rest | 8 | 8 minutes |
Add a 5 minute easy warm-up and a 5 minute cool-down around any of them. The total column above covers only the intervals.
How to choose
- New to exercise or returning after a break: start with 1:2 or 1:1 and low-impact movements.
- Working on stamina: use 2:1 with moderate effort.
- Short on time: use shorter total sessions at a higher intensity, but only once you are used to exercise.
Safety
This is general information, not medical advice. Intense intervals put real strain on the heart and muscles. If you have a heart condition, are pregnant, are recovering from an injury or have not exercised for a long time, check with a doctor before starting. Warm up first, stop if you feel dizzy, sharp pain or chest discomfort, and do not train through them.
Related timers
Common questions
What does a 1:2 work-to-rest ratio mean?
Rest is twice as long as work. For example, 30 seconds of effort followed by 60 seconds of rest. It suits harder efforts that need more recovery.
What is Tabata?
A format of 20 seconds of very hard effort followed by 10 seconds of rest, repeated eight times, which takes 4 minutes. It is named after Japanese researcher Izumi Tabata, whose research on this pattern was published in the 1990s. It is very demanding, so it is not a beginner workout.
What is an EMOM?
It stands for "every minute on the minute". At the start of each minute you do a set amount of work, such as 10 squats, and rest for whatever time is left in that minute.
How many rounds should a beginner do?
Start with 4 to 6 rounds at a pace where you can still speak in short sentences during the work period, and add rounds over several weeks.
Do I need to warm up?
Yes. A few minutes of easy movement before intense intervals reduces the chance of strains. Finish with a few minutes of easy movement as well.