Chargeable Weight Calculator (Road Freight)

Enter your packages, your carrier's volumetric ratio, its kg-per-LDM figure and its rounding step. The tool computes the three candidates, applies the rule you pick, and states which one rules and by how much it exceeds the actual weight.

DIM divisors are the same ratio written differently: kg per m³ = 1,000,000 ÷ divisor — 3000 gives 333 kg/m³, 4000 gives 250 kg/m³, 5000 gives 200 kg/m³.

Definition, the three floors and the paying-for step: chargeable weight.

There is no universal rule, which is why this calculator makes you choose one:

The tipping density is simply the ratio itself. At 250 kg/m³, freight denser than 250 kg/m³ pays on its actual weight; anything lighter pays on volume. The same shipment can be under the tipping point for one carrier and over it for another purely because one uses a divisor of 3000 and the other 5000.

Stackability moves more money than the ratio. Declared non-stackable, the loading-metre floor usually takes over — which is the single most common reason an invoice exceeds the quote; the glossary sets out which floor applies. Cargavo, a TMS for freight brokers, stores each carrier's rule, ratio and rounding once, so a quote made on Monday and an invoice checked on Friday use the same convention.

Chargeable weight is the number that reads the grid. Once you have it, the price follows in four steps: find the bracket for the destination zone, test whether paying for the next bracket's threshold is cheaper, add the indexed fuel surcharge and the options (tail lift, ADR, ad valorem insurance, delivery appointment), then apply the margin.

Cargavo is a TMS for freight brokers and forwarders that does exactly this from the rate grids you build yourself from your carriers’ Excel or CSV sheets — there is no carrier API and no EDI. It supports four grid types: weight_zone (brackets × zones, with paying-for logic), pallet, mpl_bracket (loading-metre brackets) and hybrid_weight (flat fee below a threshold, rate above it). Taxable-weight settings — volumetric ratio, loading-metre floor, rounding — live on the grid, and margins (percent via p/(1-m) or a fixed amount per bracket) are applied server-side, so your customer never sees a buy price or a margin. Quotes are referenced Q-YYYY-NNNN and shipments S-YYYY-NNNN, in four languages, with multi-currency pricing across EUR, USD, GBP, CHF, CAD, MAD and PLN from the Growth plan. Plans: €49, €149 and €399 per month, 14-day trial, no card required.