Tools ›Universal ›W/M

Ocean W/M Calculator

LCL and heavy-air freight is billed on the greater of weight (MT) or measure (CBM) — 1 CBM = 1 revenue ton. Enter your line item and rate to get the revenue tons and freight.

ShipmentSame-shape pieces per line item

Pieces

pcs

Length

Width

Height

Dim unit

Gross wt / piece

Weight unit

FreightBase rate per revenue ton

Rate

$/RT

Min charge

Formula

Volume (CBM) = pieces × L × W × H, converted to metres first
Weight (MT) = pieces × gross-wt ÷ 1000 (kg → MT)
Revenue tons = max(MT, CBM) — 1 CBM = 1 RT
Freight = revenue tons × $/RT, floored by the minimum charge
Density = total kg ÷ CBM — ≥ 1000 kg/CBM means weight is going to bind

Source: Standard ocean / LCL freight rating convention: 1 CBM = 1 revenue ton, bill the greater. Codified in NVOCC and ocean-carrier tariffs (FMC-filed rates). A few Asian trades use different CBM/MT ratios for M³ tonnage cargo — always cross-check the operating carrier's tariff.