Shipping Weight Converter

Convert parcel and freight weights between g, kg, oz, lb, tonne, short ton, long ton, and hundredweight with practical carrier-planning bands.

Shipping & freight

Convert shipping weight units

Compare parcel and freight weights across metric, pound-based, and bulk-carrier units without losing the practical handling context.

Planning note Carrier breakpoints vary by service, destination, packaging, and contract terms. The threshold notes here are practical planning bands, not a substitute for the live rules of a specific carrier.

Result

Enter a shipment weight Provide a non-negative value to compare parcel, freight, and bulk weight units.

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Shipping Weight

Shipping weight converter: kilograms, pounds, tonnes, and freight thresholds explained

A shipping weight converter keeps one shipment mass consistent while the labels around it change between parcel, freight, and bulk-handling workflows. That matters because a weight shown in kilograms on one document may need to be compared with pounds, short tons, long tons, or hundredweight on another.

Why shipping weight needs more than a generic mass conversion

A general mass converter can tell you the number in another unit, but shipping decisions often depend on where the weight sits relative to handling bands that carriers and warehouses care about. Parcel services, manual handling, pallet planning, and freight quotes do not all use the same language or breakpoints.

That is why this tool keeps metric, pound-based, and freight units visible together and adds practical threshold notes. The purpose is not to replace a live carrier tariff, but to make it easier to sanity-check whether a shipment still behaves like a parcel or is drifting into freight-style handling.

The exact relationships behind the freight units

The converter normalises every value through kilograms. The pound is defined exactly as 0.45359237 kilograms, which makes the ounce exactly 0.028349523125 kilograms. From the same definition, a US short ton is exactly 2,000 pounds, a UK long ton is exactly 2,240 pounds, a US hundredweight is 100 pounds, and a UK hundredweight is 112 pounds.

Those exact definitions matter because freight units often appear close together in practice. A metric tonne is 1,000 kilograms, which is heavier than a short ton but lighter than a long ton. If you are comparing warehouse instructions, commodity notes, or older shipping documents, a converter that keeps those distinctions explicit is safer than relying on rounded memory.

1 lb = 0.45359237 kg

Exact international-pound definition used as the shared base.

1 short ton = 2,000 lb = 907.18474 kg

US freight ton relationship derived from the exact pound.

1 long ton = 2,240 lb = 1016.0469088 kg

UK long-ton relationship used in older and maritime contexts.

How to interpret the planning thresholds

The threshold bands in the live tool are practical orientation markers only. Around 31.5 kilograms or 70 pounds, many parcel workflows start to trigger heavier-handling rules. Around 68 kilograms or 150 pounds, the conversation often shifts more clearly toward pallet, LTL, or freight handling. Those bands are useful for planning, but the exact rule still depends on the carrier, service, route, packaging, and contract.

That means the converter is best used to frame the decision before you book or quote. It can tell you that a shipment labelled as 68 kilograms is also 150 pounds and roughly 1.49 US hundredweight, which is enough to understand why a service class or surcharge may change even though the physical shipment has not.

Frequently asked questions

What is the difference between a metric tonne and a short ton?

A metric tonne is exactly 1,000 kilograms. A US short ton is exactly 2,000 pounds, which equals 907.18474 kilograms. The metric tonne is therefore about 92.8 kilograms heavier than a short ton.

 When does a parcel become freight?

There is no single worldwide cut-off. Many workflows start to change around 31.5 kg (70 lb) and more clearly around 68 kg (150 lb), but the exact threshold depends on the carrier, service, packaging, and contract terms.

 Why do hundredweight units still appear in shipping?

Hundredweight remains common in commodity, warehouse, and freight pricing language. In the US it equals 100 lb; in the UK it equals 112 lb, so the jurisdiction still matters.

 Can this converter replace a carrier quote or tariff?

No. It converts units and provides planning context only. The actual service limit, surcharge, and eligibility rules still come from the specific carrier or freight provider.

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