How long has our sun got until dwarfing?

Question: How long has our sun got until dwarfing?
- Keywords:
  future,
  sun,
  theory
Asked by to Sarah on 16 Jun 2014. This question was also asked by .
- Sarah Casewell answered on 16 Jun 2014:
  
  Dwarfing – what great phrase!
  
  Our Sun has about 4.5 billion years to go before it runs out of fuel. When it does, it will expand out to about the orbit of Mars, before dying and becoming a white dwarf.

Question: How long has our sun got until dwarfing?