Session Results
Your computed timer plan appears here after submission.
Waiting for a calculated plan.
Generated Segment Schedule
| # | Type | Label | Duration | Cumulative |
|---|
The schedule powers the countdown timer and both export formats.
Circuit Input Form
Use the fields below to estimate structure, timing, density, and calories.
Example Data Table
A sample circuit shows how totals change with rounds, rest, and transitions.
| Metric | Value | Explanation |
|---|---|---|
| Total exercise volume | 24 work intervals | 6 exercises multiplied by 4 rounds. |
| Active work time | 16:00 | 24 intervals multiplied by 40 seconds. |
| Intra-exercise rest | 06:40 | 5 rests per round, repeated over 4 rounds. |
| Transition time | 03:20 | 5 transitions per round, repeated over 4 rounds. |
| Round rest total | 04:30 | 3 round breaks at 90 seconds each. |
| Warm-up plus cool-down | 08:00 | 300 seconds plus 180 seconds. |
| Estimated calories | 377.3 kcal | Based on 70 kg body weight and MET 8. |
| Session work density | 41.6% | Active time divided by total session time. |
Formula Used
Round duration
Round Duration = (Exercises × Work Seconds) + ((Exercises − 1) × Rest Between Exercises) + ((Exercises − 1) × Transition Seconds)
Total active work
Total Active Time = Exercises × Rounds × Work Seconds
Total session duration
Total Session Seconds = Starting Delay + Warm-Up + Cool-Down + (Rounds × Round Duration) + ((Rounds − 1) × Round Rest Seconds)
Work density
Work Density % = (Total Active Time ÷ Total Session Seconds) × 100
Estimated calories
Calories = MET × 3.5 × Body Weight in kg ÷ 200 × Total Session Minutes
How to Use This Calculator
- Enter how many exercises appear in each round.
- Add work time, short rests, and transition time.
- Set the number of rounds and round recovery.
- Optional: include warm-up, cool-down, weight, and MET value.
- Type custom exercise names, one per line, if needed.
- Click Calculate Timer Plan to show summary metrics and the segment schedule.
- Use the live timer controls to run the workout.
- Export the generated plan using the CSV or PDF buttons.
FAQs
1. What does this timer calculator estimate?
It calculates full session duration, active work time, recovery time, transition time, round density, total exercise volume, and an estimated calorie burn based on entered values.
2. Can I use my own exercise names?
Yes. Enter one exercise per line in the custom exercise field. If you list fewer names than stations, the remaining positions fill automatically.
3. Why does total time differ from active time?
Active time counts only work intervals. Total time also includes warm-up, cool-down, short rests, transitions between exercises, and rest periods between rounds.
4. How are calories estimated here?
Calories are estimated with a MET-based formula using your body weight and total session length. It gives a useful planning estimate, not a medical measurement.
5. What is work density?
Work density is the percentage of the session spent exercising. Higher density usually means less recovery time and a more demanding circuit structure.
6. Should transition time be separate from rest?
Yes, if you want more realistic planning. Transition time covers moving, setting equipment, or changing stations, while rest time represents intentional recovery.
7. Can I use this for HIIT or bootcamp sessions?
Yes. The calculator works well for HIIT, bootcamps, strength circuits, conditioning blocks, and home workouts where repeated interval structure matters.
8. Does the live timer save data automatically?
No. Use the CSV or PDF buttons after calculating if you want to keep the summary and segment schedule for later use.