Lewis Jones, 35, of no fixed abode, was accused of making the threat in Penarth on May 25.
It was alleged that Jones threatened another man with a kitchen knife on Stanwell Crescent.
He admitted an offence of threatening a person with a bladed article in a public place.
Lewis Jones threatened another man with a kitchen knife. (Image: South Wales Police)
At Newport Crown Court, Jones was sentenced to a total of 62 weeks imprisonment.
Judge Lucy Crowther made a forfeiture and destruction order for the kitchen knife.
Binita Tamang appeared for the prosecution, whilst Harry Baker represented the defendant.
