18 points in Roblox would be about 1 Robux if the rate is the common 1500 points = 100 Robux conversion, because 18 points is roughly 1.2% of 1500.

Quick math

  • 1500 points = 100 Robux.
  • 18 points ÷ 1500 × 100 = 1.2 Robux.

What that means

  • In practice, that rounds to about 1 Robux.
  • If you meant a different Roblox points system, the value could be different, because Roblox has had multiple point-related systems over time.

Note

Roblox’s current Robux purchase pages focus on direct Robux bundles rather than a simple “points” cash-out system.