Oil barrel to cubic meter
1 bbl = 0.1589873 m^3

Ton to oil barrel (for average density oil)
1 ton = 7.1475121 bbl

Barrel of oil equivalent (BOE) to cubic meter
1 boe = 169.902 m^3

Barrel of oil equivalent (BOE) to Million Standard Cubic Feet
1 boe = 0.006 MMscf

Thanks!