A translation text output corresponding to a machine translation from a source text of a first language to a target text of a second language is received. The translation text output includes at least one sentence including at least one translation chunk. A first translation quality confidence estimate for the at least one sentence of the text and a second translation quality confidence estimate for the at least one translation chunk are received. A first translation confidence indicator for the at least one sentence and a second translation confidence indicator for the at least one translation chunk are displayed. The first translation confidence indicator is determined from among a plurality of different first translation confidence indicators based upon the first translation quality confidence estimate. The second translation confidence indicator is determined from among a plurality of different second translation confidence indicators based upon the second translation quality confidence estimate.