Final Fantasy VII Remake typically takes about 30 to 40 hours to complete on average when playing through the main story and side quests.

• A first playthrough on normal difficulty usually takes around 30 to 40 hours.
• Playing on easy or classic difficulty can shorten this to around 25 to 35 hours.
• Playing in hard mode or aiming for completion (including all side quests, collectibles, battle challenges, and post-game content) can extend total playtime to 60 to 80 hours or even up to about 90 hours for completionists.
• If focusing mostly on the main story without many side quests, it can take approximately 32.5 hours.
• 100% completion can take around 86 hours according to some sources.

This covers just the first part of the original game story, focused on the Midgar section, with significant expansions and new content compared to the original Final Fantasy VII. So depending on your play style—whether you are rushing through the story, exploring side quests, or going for full completion—your playtime will vary from about 25 to 90 hours.