Volumetric Weight in India: How Couriers Bill You
Volumetric weight in India is length times width times height in centimetres, divided by 5000. Couriers bill the greater of that figure and the actual weight. A light but bulky box often bills on volume, so you pay for air. Right-sizing the box is the fix.
What is volumetric weight and the divisor 5000?
Every courier in India, whether Delhivery, Bluedart or DTDC, charges on two numbers and bills the higher one. The first is actual weight on the scale. The second is volumetric weight, which turns the size of the box into a weight. The idea is fair from the courier side: a big light box takes the same van space as a heavy small one, so they price for the space it occupies.
The standard Indian formula uses a divisor of 5000. Take the length, width and height of the box in centimetres, multiply them together to get the volume in cubic centimetres, then divide by 5000. The result is the volumetric weight in kilograms. It is the same formula on every major rate card, which is why you can plan around it before you dispatch a single parcel.
Volumetric weight in India is length times width times height in centimetres, divided by 5000.
How do actual and volumetric weight compare?
The table below runs the arithmetic on five example boxes. Sizes are in centimetres. Volumetric weight is L x W x H divided by 5000, rounded to two decimals. The billed column is simply the greater of actual and volumetric. These are worked examples, not quotes, but the method is exactly what a courier applies.
| Box size (cm) | Actual kg | Volumetric kg | Billed kg |
|---|---|---|---|
| 20 x 15 x 10 | 0.80 | 0.60 | 0.80 (actual) |
| 25 x 20 x 10 | 1.00 | 1.00 | 1.00 (equal) |
| 30 x 25 x 15 | 1.20 | 2.25 | 2.25 (volumetric) |
| 40 x 30 x 20 | 2.50 | 4.80 | 4.80 (volumetric) |
| 50 x 40 x 40 | 3.00 | 16.00 | 16.00 (volumetric) |
Take the 30 x 25 x 15 cm box. Multiply the sides: 30 times 25 times 15 is 11,250 cubic centimetres. Divide by 5000 and you get 2.25 kg. The product inside weighs only 1.20 kg, but the courier bills 2.25 kg, because the box is larger than its contents. The 50 x 40 x 40 cm box is the extreme case: 80,000 divided by 5000 is 16 kg billed against 3 kg of actual product.
Notice the first two rows. When the box is small and reasonably packed, actual weight wins or the two figures meet. Volumetric only overtakes actual once the box carries a lot of air relative to what is inside. That crossover point is the thing you control with box size.
Why does a light but bulky box cost more?
A courier van has a fixed volume, not just a fixed weight limit. A pillow, a lampshade or a folded jacket in an oversized carton can fill a shelf while weighing almost nothing. The divisor 5000 is the courier's way of charging for that shelf space. So the cost driver is not what your product weighs, it is how much room the box takes up in the vehicle.
Couriers bill the greater of actual and volumetric weight, so empty space in the box costs the same as product.
This is why two brands shipping the same jacket can pay different courier bills. The one using a 40 x 30 x 20 cm carton bills at 4.80 kg. The one using a box cut close to the folded garment might bill at half that. Same product, same route, different box, different invoice on every single order for the life of the SKU.
How do you keep volumetric weight down?
The fix is almost always the box, not the product. Shrink the air and you shrink the volumetric weight. A few habits keep the billed figure close to actual weight across your catalogue.
- Measure the packed product, then cut the box to that plus 5 to 10 mm of clearance per side.
- Avoid one big box for mixed orders when two snug boxes total less volume.
- Reduce height first: it multiplies straight into the volume calculation.
- Use a mailer that folds down to the product depth instead of a fixed-height carton.
- Check every SKU's volumetric weight once, using L x W x H in cm divided by 5000, and store it.
- Compare the billed slab before and after resizing, since one centimetre can cross a rate band.
None of this needs a heavier or stronger box. It needs the right size. That is the whole argument for custom corrugated: a box cut to your product ships at a lower billed weight than a stock box you bought because it was on the shelf. Our quote engine lets you test box sizes against price bands before you order, and the same dimensions feed straight into your courier calculation.
Frequently asked questions
Is the divisor always 5000 in India?
For standard domestic road and surface courier, 5000 is the common divisor across major networks. Some air and international services use a different divisor, so always confirm on your own rate card. The method stays the same: L x W x H in cm, divided by the stated number, gives volumetric kg.
Do I use inches or centimetres for the formula?
The divisor 5000 rule uses centimetres. Take length, width and height in cm, multiply, then divide by 5000 for the volumetric weight in kg. If you designed the box in inches, convert first: one inch is 2.54 cm. Our quote engine handles both units for you.
Which weight does the courier actually charge?
The greater of the two. They weigh the parcel and also calculate volumetric weight from its dimensions, then bill whichever is higher. For dense products actual weight usually wins; for light bulky products the volumetric figure wins and sets your cost.
Why is my light parcel billed at a higher weight?
Because the box is large relative to the product. The divisor 5000 turns box size into a weight, and if that number beats the scale weight, it is what you pay. The parcel is being charged for the van space it takes, not for what it weighs.
Can a smaller box really cut my courier bill?
Yes, when your product bills on volumetric weight. Cutting a few centimetres off each side lowers the volume, which lowers the volumetric kg, which can drop you a full slab on the rate card. The saving repeats on every shipment of that product.
How does VI help with volumetric weight?
We cut boxes to your exact product size, which keeps the volumetric weight close to actual weight. The quote engine shows a live price band as you change dimensions, ply and quantity, so you can size for both box cost and courier cost at once, then confirm on WhatsApp.