Mikita Yemelyanav and Ivan Komar were found guilty of damaging the Minsk City Court and the Minsk pretrial detention facility as well as producing Molotov cocktails.
They had been in jail since October.
According to the investigators, Yemelyanav in September threw a light bulb with red paint at the Minsk court, causing $65 in damages.
He subsequently pleaded guilty, saying the act was carried out to protest another trial prosecuting a fellow anarchist, Dzmitry Polienko.
The following month Yemelyanav threw a fire bomb at the entrance door of a pretrial detention facility that failed to ignite. He succeeded in his second attempt the following week causing $0.7 worth of damages.
In court, he said the fire bomb was thrown to protest political prisoners in Belarus.
Human rights activist Valyanstin Stefanovich told RFE/RL that Emelyanav voluntarily paid for the damages, a matter the court didn’t take into consideration when sentencing him.
Komar, who filmed the acts, admitted doing so but pleaded not guilty in causing damage to the government properties.
Yemelyanav said his sentencing was politically motivated and that he will appeal the ruling.