Total bases

${\displaystyle TB=(1\times 1B)+(2\times 2B)+(3\times 3B)+(4\times HR)}$

In baseball statistics, total bases is the number of bases a player gains with hits. It is a weighted sum with values of 1 for a single, 2 for a double, 3 for a triple and 4 for a home run. For example, three singles is three total bases, while a double and a home run is six total bases.

Only bases attained from hits count toward this total. Reaching base by other means (such as a base on balls) or advancing further after the hit (such as a stolen base) does not increase the player's total bases. In box scores and other statistical summaries, total bases is often denoted by the abbreviation TB.

The total bases divided by the number of at bats is the player's slugging percentage.