How to convert Cubic Tons to Cubic Meters (cu ton to m3)? 1 cu ton = 1.133 m3. 1 x 1.133 m3 = 1.133 Cubic Meters. Always check the results; rounding errors may occur. Definition: The cubic ton is a measure of volume, varying based on the commodity from about 16 to 45 cu ft (0.45 to 1.27 m3).