Nigel Clough was understandably 'delighted' after seeing his side earn the point required to secure a top six finish, with a 1-1 draw at Leyton Orient on Saturday.
United dominated for long periods in the capital but fell behind when Mathieu Baudry headed home Dean Cox's corner from close range, only for Bob Harris to equalise six minutes later to ensure a share of the spoils.
Rochdale's home defeat against automatic promotion hopefuls MK Dons would have been enough for the Blades anywhere, but Clough was happier knowing his side had taken care of themselves at Brisbane Road.
He remarked: "We are delighted to have secured our spot in the play-offs and pleased to have done so on merit, without relying on Rochdale losing.
"We knew the MK Dons were winning at Spotland, but we wanted to get the result for ourselves and the only disappointment is we didn't go on and win the game.
"We created chances, especially in the first-half, when we had some very good opportunities and it wasn't from scraps, for the first 25 minutes we were excellent and the only thing that was missing was a goal.
"In Orient's situation if we had scored early on we might have gone on and won comfortably, you don't get chances like Jason Holt had and he knows he should be scoring more often than not."
The Gaffer praised his side's performance, although he felt United should have return north with all three points on reflection.
He added: "Apart from set pieces we always felt comfortable and that shows that we controlled the game for long periods, but how their goal came about is again frustrating.
"We wanted to go and win the game, the lads didn't know results from elsewhere and we want to have that winning habit amongst the squad. It is important at this stage of the season and we want to finish as high as possible too."