A load cell unit includes: a load cell that is provided with a distortional member including a free-end block, a fixed-end block, an upper beam portion connecting an upper end of the free-end block and an upper end of the fixed-end block, and a lower beam portion connecting a lower end of the free-end block and a lower end of the fixed-end block; a first temperature sensor that is disposed at the upper beam portion or the lower beam portion; and a second temperature sensor that is disposed at one of the free-end block and the fixed-end block.