Formula for calculating the volume and weight of express delivery: conventional goods: length (cm)× width (cm)× height (cm)÷6000= weight (KG). Irregular articles: longest (cm)× widest (cm)× highest (cm)÷6000= weight (KG).

Ordinary express has electronic scales, the first weight is within 1kg, and the second weight is outside 1kg. Generally, the second weight is cheaper than the first weight. 2 yuan only counts weight, not volume, and the starting price is 8- 12 yuan. Things that are too big will also be calculated by volume. Individual couriers will use scales and rulers to calculate the volume and weight of air transportation.