Round Timer Calculator

Total Fight Time is Number of Rounds multiplied by whichever round length is in effect -- the discipline default or your override -- so each additional round adds a fixed amount equal to that round length. The reason it can look uneven across disciplines is that the round length itself differs: MMA's 5-minute rounds add more time per round than boxing's 3-minute rounds, not that the relationship itself is inconsistent.

A value of 0 in either override field is read as "use the selected Discipline's standard duration," not as a literal zero-length round or rest period. Entering any number above 0 replaces the discipline default outright for that field, so there is no partial blend between the two -- you are either using the standard duration or your custom one.

The discipline defaults reflect typical amateur/standard bout conventions rather than a single formula -- Muay Thai's clinch work and knee/elbow strikes are generally considered more physically taxing per round, and its standard rest convention (2 minutes) reflects that, compared to boxing's 1-minute rest at the same round length. Both are overridable if your gym or federation uses different intervals.

No -- Total Session Time is strictly the sum of Total Fight Time and Total Rest Time as calculated from the round and rest lengths and round count you set. It does not add any buffer for warmups, cool-downs, cornering between rounds beyond the rest period itself, or administrative breaks, so treat it as the pure clock time of the rounds and scheduled rests, not the full duration of a training session or event.

Yes -- Number of Rounds accepts up to 15, well beyond a typical professional bout's round count, specifically so it can double as a conditioning-circuit planner. Combine a higher round count with a discipline's standard or your own custom round/rest lengths to block out interval-training time on the clock.