Tyson Fury will go toe-to-toe with Deontay Wilder at the Staples Center in Los Angeles on Saturday.
The Gypsy King claims he is in great shape as he aims to bring the WBC belt back to the UK.
"I'm going to win this fight - one million per cent. There is not a doubt in my mind. No matter what he brings on Saturday night I will over come him and take the WBC title back to the UK," Fury said.
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"You will see the best Tyson Fury. It needs to be the best Tyson Fury to compete at this level and beat such a champion as Deontay Wilder but I'm pretty confident that I have worked hard enough and done everything in my power.
"I'm going to go in there and do my best on Saturday night. I'm very relaxed I don't get very tense before a fight - it's just another fight for me. It's another boxing match.
"I already have had 27 professional fights and been a professional for 10 years and I've needed to win all of them.
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"I don't really have a weight goal (for this fight) but I've worked really hard and I'm as heavy as I have been in most of fights. I was 257 pounds on the nail this morning."
However, Fury is outsider at 6/4 to win the fight, while Wilder, who has won all 40 of his professional fights (39 via knockout), is 8/13 to beat the Briton.
Although, 58.72% of bets have been placed on the Gypsy King to be the first man to beat the heavy-handed American (Oddschecker).
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Meanwhile, the Bomber told Sky Sports he respects Fury as he 'has done a lot of great things.'
He said: "He (Fury) had done a lot of great things, defeating Wladimir Klitschko and although he wasn't able to defend his title that was a big accomplishment for him.
"I was very happy to see him do that. I can be happy for others even if they do things better than me, because I am so happy in my life, and I surround myself with positive things.
"I can't wait for Saturday night because I'm so excited."
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Elsewhere, Fury has revealed he will be using his full fight purse to build houses for the homeless.
The 30-year-old is expected to earn seven-figures - a career high - for the bout at the weekend and insists he is going to use it to help those in need.
"I'm going to give it to the poor and I'm going to build homes for the homeless," Fury told the Irish Mirror.
"I don't really have much use for it, I'm not interested in becoming a millionaire or a billionaire. I'm a boxer not a businessman and I'll probably go down the same route as every other boxer - skint at the end of it all.
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"You can't take it with you so I might as well do something with it and help out people who can't help themselves."
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