Akshar Ali, 27, was found guilty of murdering his 26-year-old wife Sinead Wooding with friend Yasmin Ahmed, 27, before dumping her body in a woodland and setting it on fire, Leeds Crown Court was told on Tuesday.
A jury unanimously found the pair guilty of murder after five days of deliberations.
The court had previously heard how mother-of-four Miss Wooding had been attacked at her home in Leeds with a hammer and had been stabbed six times.
Her body was kept in a cellar for two days before being transported to a woodland north of the city, the court heard.
The body had then been wrapped in a duvet and trussed up with wire before being doused with petrol.
The smouldering remains were discovered at about 9am on Sunday 14 May by a group of students who were out for a run in the area.
The jury also unanimously found Vicky Briggs, 25, of Leeds, guilty of assisting an offender by helping clean up and burn material after the murder.
But the jury reached a not guilty verdict on two remaining defendants accused of involvement in Miss Wooding’s murder.
In addition, the jury was told how Miss Wooding had converted to Islam before meeting Ali, whom she married in in February 2015.
The court also heard that Miss Wooding called police the night before she was killed but officers did not visit until three days later.