Calculator

CBM calculator and volumetric weight calculator

A CBM calculator turns carton dimensions into cubic metres: length × width × height in metres, added up over every carton. That is what sea LCL is priced on. For air, the same dimensions in centimetres divided by 6000 give the volumetric weight, and you are charged on the greater of that and the actual weight. Enter your cartons below for both figures and an indicative price from our published rates.

By the Director, Empirical Marine and Trading Pte. Limited

On this page
  1. What CBM is
  2. Volumetric weight
  3. Chargeable weight
  4. A worked example
  5. Indicative, not confirmed
Carton type 1

Your shipment

Total volume
0CBM
Total gross weight
0kg
Volumetric weight (air)
0kg
Chargeable weight (air)
0kg

Volumetric weight = length × width × height in cm ÷ 6000, per carton.

Enter your cartons and you get the volume, the chargeable weight, and an indicative figure from our published rates. FCL is quoted per booking — send a request and you get a firm number the same business day.

What CBM is

CBM is a cubic metre. For one carton it is length × width × height, each in metres; for a shipment it is that figure summed over every carton. Sea LCL is priced on CBM because your cartons share a container with other importers' cargo and the space they take is what costs money, not their weight. Our sea LCL rate is S$82 per CBM, hub to door, and the minimum billed is 1 CBM, so a shipment smaller than that is charged as 1 CBM. The sea freight guide covers what the rate includes.

Volumetric weight

Air freight has two weights. The actual weight is what the scale says. The volumetric weight is what the space a carton occupies would weigh if it were filled with something of average density, and it is worked out as length × width × height in centimetres ÷ 6000, per carton, then summed. A carton of 60 × 40 × 50 cm has a volumetric weight of 20 kg whatever is inside it.

Chargeable weight

Air is charged on the chargeable weight: the greater of the actual weight and the volumetric weight. Light, bulky cargo such as cushion covers or foam is charged on volume; dense cargo such as tiles or metal parts is charged on the scale. Our air rate is from S$6.00 per kg of chargeable weight, general cargo, with a minimum of 10 kg. The air freight guide explains when air is worth it and when sea is the better trade.

Tell us what you're shipping.

Send the details and any invoice or packing list you have. You get a reference number immediately and a written quote the same business day.

Get a quote

A worked example

Two carton types, measured in centimetres. CBM is the product of the three sides in metres; volumetric weight is the product in centimetres divided by 6000. Both are per carton and then multiplied by the quantity.

Dimensions to CBM and volumetric weight
CartonDimensions (cm)QuantityCBM eachCBM totalVolumetric kg eachVolumetric kg totalActual kg total
A60 × 40 × 50100.121.22020040
B40 × 30 × 3050.0360.1863060
Shipment151.38230100

By sea this shipment is 1.38 CBM, above the 1 CBM minimum, so it is billed on 1.38 CBM at S$82 per CBM. By air the volumetric weight is 230 kg against an actual weight of 100 kg, so the chargeable weight is 230 kg, well above the 10 kg minimum. The guide to shipping from China to Singapore goes through when each mode makes sense.

Indicative, not confirmed

The figures the calculator shows are indicative, from our published rates. Your written quote is the confirmed figure. The quote also carries what the calculator cannot know: GST at 9% on the import value, any special handling, and whether anything on the restricted goods list needs paperwork. Use the figures in a quote request and you have a written quote the same business day.

Frequently asked questions

How do I calculate CBM for shipping?
Multiply length × width × height of a carton in metres, then multiply by the number of cartons of that size. Add the totals for every carton size. A 60 × 40 × 50 cm carton is 0.12 CBM.
How is volumetric weight calculated for air freight?
Length × width × height in centimetres ÷ 6000, per carton, then summed. A 60 × 40 × 50 cm carton has a volumetric weight of 20 kg regardless of its actual weight.
What is chargeable weight?
The greater of the actual weight and the volumetric weight of the shipment. Air freight is priced on it. Our air rate is from S$6.00 per kg with a 10 kg minimum.
What is the minimum for sea LCL?
1 CBM. A shipment below that is billed as 1 CBM at S$82 per CBM, hub to door.
Is the calculator price the price I will pay?
It is indicative, from our published rates. Your written quote is the confirmed figure, and it adds GST at 9% on the import value and any special handling. Nothing is booked or payable until you confirm the quote.

Tell us what you're shipping.

Send the details and any invoice or packing list you have. You get a reference number immediately and a written quote the same business day.