While bounties correlate to danger/threat level and not strength, it is still a practical guide to see who is generally strong. The Navy posts bounties to warn the public about dangerous criminals and ...

Luffy's very first bounty in One Piece was 30 million berries ... Luffy successfully crept past all the defenses of the Navy ...

Bounties in One Piece can't be claimed by criminals, limiting the Straw Hat Pirates' income potential. Each member's potential bounty amounts are calculated, with Luffy having the highest at 7.7 ...