Mapping Gravity Z Value to 9.8 m/s2

I’m trying to world with real world references and I can’t seem to get understand the UE4’s unit system for gravity Z value.

I want to map it to real world value of 9.8 m/s2 but I can’t seem to replicate it in UE if you have an good refereces to UE unit system that explains all and also how do I replicated the value 9.8 m/s2 in gravity Z I’d appreciate.

Unreal units are in centimeters. Try 980 instead of 9.8 and you see it works. For example, try adding an upward force of 980 units (0, 0, 980) to a mesh with Simulate Physics on, and you see it’ll stay in midair.