Calculate volumetric weight for surface & air cargo instantly. Find the chargeable weight couriers use to bill you — no signup required.
Formula: (L × W × H) ÷ 5000 = Volumetric Weight (kg)
Fill in your package's length, width, height, and actual weight, then click Calculate Weight to find the chargeable weight.
Stop overpaying for shipping. Know exactly what couriers will charge before you ship.
Instantly switch between Surface Cargo (÷5000) and Air Cargo (÷6000) divisors. Get the exact volumetric weight your courier will use to calculate shipping charges.
Shipping multiple boxes? Add unlimited packages and get individual + total chargeable weight in one go. Perfect for bulk e-commerce shipments and B2B orders.
Couriers charge whichever is higher — actual or volumetric weight. Our tool automatically compares both and highlights exactly what you'll be billed for.
Built for Delhivery, BlueDart, DTDC, Ecom Express, Shadowfax, and India Post. Uses the exact divisor formulas these couriers apply to calculate your shipping cost.
Master the shipping cost formula that every Indian e-commerce seller needs to know.
Volumetric weight (also called dimensional weight or DIM weight) is a pricing technique used by couriers to charge based on the space a package occupies rather than its actual weight. This prevents light but bulky packages from being shipped at low costs.
Every Indian courier — from Delhivery and BlueDart to DTDC and Ecom Express — uses this formula to determine your shipping cost. If the volumetric weight exceeds the actual weight, you pay for the volumetric weight. This directly impacts your per-order profit margins, especially if you sell lightweight but large products like pillows, home décor, or electronics packaging.
The key difference between surface and air cargo lies in the divisor used in the volumetric weight formula. Surface cargo (ground transport via road or rail) uses a divisor of 5000, while air cargo uses 6000. This means for the same package dimensions, air cargo results in a lower volumetric weight.
For example, a package measuring 40×30×20 cm has a volumetric weight of 4.8 kg via surface (÷5000) but only 4.0 kg via air (÷6000). However, air shipping rates per kg are typically higher, so always compare total costs before choosing your shipping mode.
The most effective way to reduce shipping costs is to optimize your packaging dimensions. Use the smallest box that safely fits your product. Avoid excessive void fill and oversized cartons. Even reducing each dimension by 2-3 cm can significantly lower your volumetric weight.
For sellers shipping 100+ orders daily, even a ₹5 saving per shipment translates to ₹15,000+ monthly. Use this calculator before finalizing your packaging strategy for every SKU. Compare surface vs air cargo costs, and negotiate better rates with your courier partners using accurate volumetric data.
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