Of course, this world will end .. but when it's time?just Allah Almighty know
All that is on earth will perish .. Except Allah Almighty

Allah Almighty says:

{ كُلُّ مَنْ عَلَيْهَا فَانٍ وَيَبْقَىٰ وَ جْهُ رَبِّكَ ذُو الْجَلَالِ وَالْإِكْرَامِ فَبِأَيِّ آلَاءِ رَبِّكُمَا تُكَذِّبَانِ }

Translation:
{ All that is on earth will perish} Verse No: 26
{ But will abide (forever) the Face of thy Lord,- full of Majesty, Bounty and Honour.}Verse No: 27
{Then which of the favours of your Lord will ye deny?} Verse No: 28
Quran... Chapter Name : Ar-Raĥmān