Estimate quantity of earth excavation

Hello everyone,

I will soon be building a semi-detached house with a basement. The dimensions of the house are 6x12.5m.
I would be interested to know what the excavation would cost me. For that, I would need to know how many cubic meters I will have to dispose of.
What do you think I am looking at?

Best regards
Michi

220 sqm * regionally highly varying price per sqm

L x W x H x €/m3 x soil class x regional factor.

Oh, I had a lapse there... not sqm but cbm.

L x W x H x €/m3 x soil class x regional factor.

But then the slopes/working space are still missing, right? That is also a not insignificant amount.

220 sqm * regional strongly varying price per sqm

More likely around 400 m³ including workspace.