I'm saddened by how much disinfo is on here and various accompanying unpleasantness aimed at the OP.
Being "charged" is not a conviction, it's only a step in the process before attending a court hearing. The court will take a plea from the defendant and an actual legal conviction follows either a guilty plea or being found guilty at trial.
However, OP is asking a far more nuanced question about implied guilt from being charged, and whilst it's not a "legal" conviction, whether being charged constitutes a moral one.
I would say absolutely not. "Somebody must think he did it" is a short hop to a witch hunt, people.
There's no substantive or procedural facts at this point aside from being charged. You have no idea what happened after this point, whether the case was dropped for lack of evidence right through to being aquitted at the end of a trial plus everything inbetween.
Finally, we also don't know what the offence was, which does raise other issues; being charged with low value shoplifting (trial at the Magistrates' court, no jury) is obviously different from being charged with rape and facing a jury trial at Crown court, an offence with well-established low charge to conviction rates. I apologise if this has been dealt with at another point in the thread.
He's a friend. I'd be one back at this point.