Derek Chauvin, the former Minneapolis police officer convicted of murder and manslaughter for pressing his knee against the neck of George Floyd will be sentenced in June, according to an online court filing for the case.

Online records say Chauvin will be sentenced on June 16 at 1.30pm local time, by Peter Cahill, the Hennepin County judge who oversaw the trial that included nearly three weeks evidence from bystanders, medical experts and police use-of-force trainers.

Chauvin, 45, was convicted on Tuesday of all three counts against him: second-degree unintentional murder, third-degree murder and second-degree manslaughter.

Under Minnesota statutes he will only be sentenced on the most serious one — second-degree murder.

While that count carries a maximum sentence of 40 years, experts say he will not get that much.

They say that for all practical purposes, the maximum he would face is 30 years, and he could get less.

Under Minnesota sentencing guidelines, the presumptive second-degree murder sentence for someone with no criminal record like Chauvin would be 12 1/2 years.

Judges can sentence someone to as little as 10 years and eight months or as much as 15 years and still be within the advisory guideline range.

But in this case, prosecutors are seeking a sentence that goes above the guideline range, called an “upward departure”.

They cited several aggravating factors, including that Mr Floyd was particularly vulnerable, that Chauvin was a uniformed officer acting in a position of authority, and that his crime was witnessed by multiple children — including a nine-year-old girl who gave evidence that watching the restraint made her “sad and kind of mad”.

Both sides are expected to file written arguments on whether there were aggravating factors, and Mr Cahill will make a finding before the sentencing hearing.

Even if aggravating factors are found to be present, experts say Cahill likely would not sentence Chauvin to anything more than 30 years because previous Supreme Court rulings indicate anything more than that would risk a reversal on appeal.

No matter what sentence Chauvin gets, in Minnesota it is presumed that a defendant with good behaviour will serve two-thirds of the penalty in prison and the rest on supervised release, commonly known as parole.

That means if Chauvin is sentenced to 30 years, he would likely serve about 20 behind bars, as long as he causes no problems in prison.

Once on supervised release, he could be sent back to prison if he violates parole conditions.

Chauvin is currently in Minnesota’s only maximum-security prison, and is in a single cell for his safety.

He did not give evidence at trial, and it is not known if he will make a statement at sentencing.

The death of Mr Floyd, who was black, sparked racial justice protests across the world.