The cubic inch equals 16.387 cubic centimetres. Used in US automotive engineering for engine displacement (e.g., "350 cubic inch V8 = 5.7 L") and in firearms (bullet cartridges). Most of the rest of the world uses cc or litres.
Real-world: 350 cu in V8 = 5.7 L engine. 302 cu in Ford V8 = 4.9 L. Modern specs typically give litres.
Read full cubic inch reference →The cubic yard equals 0.7646 cubic metres or 27 cubic feet. It is the standard US unit for concrete, gravel, mulch and soil ordering. A typical residential concrete truck delivers 10 cubic yards. US freight shipping also uses cubic yards for loose-material capacity.
Real-world: A residential US concrete pour might need 3–8 cubic yards. US garbage dumpsters rated in cubic yards.
Read full cubic yard reference →