---
title: "Desi Calculation: How Is Shipping Desi Calculated? (Calculator and Examples)"
description: "How is desi calculated? This guide covers the width × length × height ÷ 3000 formula, the chargeable weight, international desi, examples and a free desi calculator."
url: https://www.faprika.com/en/blog/volumetric-weight-calculation
language: en
site: Faprika
---

# Desi Calculation: How Is Shipping Desi Calculated? (Calculator and Examples)

> How is desi calculated? This guide covers the width × length × height ÷ 3000 formula, the chargeable weight, international desi, examples and a free desi calculator.

The shipping fee is not determined by a package's weight alone; the space it takes up in the vehicle matters at least as much. Carriers measure this volume in **desi**. An e-commerce business that calculates desi incorrectly either charges the customer too little and takes a loss, or shows too high a fee and loses customers at the cart.

In this guide, we explain the **desi calculation** formula, how the chargeable weight is determined, what changes for international shipments, and practical ways to reduce desi, all with examples. With the desi calculator in the article, you can also calculate your own package's desi right away.

Key Takeaway

“The shipping fee is not calculated by weight alone, but by whichever is greater, weight or volume. A light but large box can cost more to ship than a heavy but small one.”

## What Is Dimensional Weight (Desi)?

Desi is a measure that converts the volume a cargo package occupies into a weight unit. Because the capacity of shipping vehicles is limited by volume as well as weight, carriers charge large but light packages according to their volume. Desi is also called “volumetric weight.”

In short: **1 desi is the volume that corresponds to roughly 1 kilogram in shipping calculations.** The package's desi is compared with its actual weight, and the larger value is used to calculate the shipping fee.

## Why Does Desi Matter?

Desi matters because it directly determines the shipping fee an e-commerce business pays on every order. As order volume grows, even small errors in desi turn into a big difference in the monthly shipping invoice.

- **Protects your profit margin:** If the shipping fee added to the product price is not calculated correctly, profit melts away with the shipping invoice. For low-priced, bulky products in particular, shipping can make up a significant share of the product cost.
- **Builds trust at the cart:** If customers run into an unexpected shipping fee at the payment step, they may abandon the purchase. Correct desi means a correct and consistent shipping fee at the cart.
- **Keeps you consistent with the shipping invoice:** The carrier measures the package at its own branch or transfer center. When your calculation and the carrier's measurement match, invoice surprises disappear.
- **Makes campaign planning easier:** When setting campaigns such as a free shipping threshold, you need to know the average shipping cost per order, and that depends on knowing your products' desi.

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## How Is Desi Calculated? The Desi Formula

For domestic shipments, desi is calculated by multiplying the package's width, length, and height in centimeters and dividing the result by 3000:

**Desi = (Width × Length × Height) ÷ 3000**

*Görsel: Desi calculation formula: width times length times height divided by 3000; for a 40 x 30 x 20 cm box the result is 8 desi (The desi formula and an example for a 40 × 30 × 20 cm box.)*

### Desi Calculation Step by Step

1. **Measure the package:** Measure the width, length, and height of the box in centimeters at its outermost points. For bulging or rounded boxes, use the widest point.
2. **Multiply the measurements:** Multiply the three measurements together to find the package's volume in cubic centimeters.
3. **Divide by 3000:** Divide the result by 3000; the value you get is the package's desi.
4. **Compare with the actual weight:** Weigh the package. Whichever is larger, desi or weight in kilograms, is used to calculate the shipping fee.

### What to Watch for When Measuring

Getting the desi right depends on measuring correctly. Take the measurements **from the outside of the packed box**, not from the product itself; the carrier also measures the package in this form.

- **Use the outer dimensions:** Box thickness, tape, and padding add to the package's outer size. A calculation based on inner dimensions will come out lower than the carrier's measurement.
- **Use the widest point:** For bulging, rounded, or uneven packages, use the widest point of each measurement.
- **Treat cylinders and irregular packages as a box:** For roll or tube-shaped packages, the diameter counts as both width and length; use the dimensions of the smallest box that would hold the package.
- **Round to the centimeter:** Millimeter precision is not needed; rounding measurements up to the next centimeter reduces the gap with the carrier's measurement.

Tip

Watch out for fractional results

The result often comes out as a fraction. Many carriers round a fractional desi up to the next whole number. When setting your prices, be sure to find out the rounding rule of the carrier you work with.

## Volumetric Weight (Desi) Calculator

Enter your package's dimensions and weight, and the tool instantly calculates the desi and the value on which the shipping fee will be based.

Desi calculator

Width (cm)

Length (cm)

Height (cm)

Weight (kg)

Number of boxes

Shipment type

Desi per box**-**

Total desi**-**

Chargeable value**-**

The result appears here once you enter the measurements.

## Desi Calculation with Examples

The table below shows the domestic desi calculation for commonly used box sizes:

| Box size (cm) | Volume (cm³) | Calculation | Desi |
| --- | --- | --- | --- |
| 25 × 15 × 8 | 3.000 | 3.000 ÷ 3000 | 1 |
| 30 × 20 × 10 | 6.000 | 6.000 ÷ 3000 | 2 |
| 40 × 30 × 20 | 24.000 | 24.000 ÷ 3000 | 8 |
| 50 × 40 × 30 | 60.000 | 60.000 ÷ 3000 | 20 |
| 60 × 40 × 40 | 96.000 | 96.000 ÷ 3000 | 32 |

## Desi or Kilograms? How the Chargeable Weight Is Determined

When the shipping fee is calculated, the package's desi is compared with its actual weight, and **the larger value** is used. That is why two packages of the same weight can ship at different prices if their sizes differ.

*Görsel: Desi or kilogram: a light 40 x 30 x 20 cm box is charged by 8 desi, a heavy 30 x 20 x 10 cm box by 5 kg (The larger of desi and actual weight determines the shipping fee.)*

| Package | Desi | Actual weight | Chargeable |
| --- | --- | --- | --- |
| 40 × 30 × 20 cm, containing a textile product | 8 | 3 kg | 8 desi |
| 30 × 20 × 10 cm, containing a metal part | 2 | 5 kg | 5 kg |

In the first package the product is light but the box is large, so the fee is calculated by desi. In the second package the box is small but the product is heavy, so the kilogram value determines the fee. Clothing, home textiles, and padding-heavy products usually fall under desi; metal, glass, and liquid products usually fall under kilograms.

## How Do Carriers Price by Desi?

Carriers mostly use tiered price lists based on desi ranges: packages within a given desi range ship at the same fee, and the fee rises as the range gets larger. For packages above a certain desi, an additional fee is often added for each extra desi.

This structure has two practical consequences for an e-commerce business:

- **Tier boundaries matter:** If a package's desi is just above a tier, a small change in box size may bring it down to the lower tier.
- **Negotiated rates differ:** Businesses that ship regularly can agree their own desi rates with carriers. Always base your calculations on your own negotiated rate.

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## How Is Desi Calculated for International Shipments?

For express and air cargo shipments abroad, the formula is the same; only the divisor changes. Many international carriers divide the volume by **5000**:

**International desi = (Width × Length × Height) ÷ 5000**

For example, a 50 × 40 × 30 cm box comes to 20 desi domestically but is calculated as 12 desi with a divisor of 5000. Because the divisor may differ by carrier and service type, confirm the value used by the carrier you have an agreement with for your international shipments.

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## Why Does Your Desi Differ from the Carrier's Calculation?

If the desi you calculate differs from the desi the carrier puts on the invoice, the cause is usually measurement. Carriers re-measure packages at their branches or transfer centers, manually or with automatic measuring devices, and issue the invoice based on that measurement.

- **Calculating with inner dimensions:** The dimensions given by the box supplier are usually inner dimensions. The wall thickness adds a few millimeters to each measurement, and when the result is rounded up, the desi increases.
- **Overflowing or swollen packages:** Overfilled boxes bulge; a measurement at the widest point comes out larger than what you calculated.
- **Rounding rule:** While you use a fractional desi as it is, the carrier may be rounding it up to the next whole number.
- **Divisor difference:** Especially for international and special service types, the divisor the carrier uses may differ from what you assume.

The best way to reduce discrepancies is to measure your frequently used boxes from the outside once, keep their desi values in a fixed list, and compare your shipping invoices against that list at regular intervals. If you see a consistent deviation, update your box dimensions or the desi information on your product cards.

### Are Desi and Volumetric Weight the Same Thing?

Yes, in everyday use they mean the same thing. “Desi” is the name used in Turkey's shipping industry; in international transport the same concept is called “volumetric weight” or “dimensional weight.” In both cases, the package's volume is converted into a weight unit with a divisor and compared with the actual weight.

## 6 Ways to Reduce Desi

The fastest way to cut shipping costs is often not negotiating with the carrier but packaging correctly. To reduce desi, pay attention to the following:

*Görsel: Reducing desi by choosing the right box: a 50 x 40 x 30 cm box is 20 desi, a 40 x 30 x 30 cm box is 12 desi (Choosing a more suitable box for the same product reduces desi from 20 to 12.)*

- **Choose a box that fits the product:** A box that leaves more empty space than necessary around the product means paying to ship air. Set a few standard box sizes for the products you sell often.
- **Reduce the height:** Because three measurements are multiplied in the formula, even a small reduction in a single measurement lowers desi noticeably. A 50 × 40 × 30 cm box comes to 20 desi, while a 40 × 30 × 30 cm box comes to 12 desi.
- **Use envelopes and bags for soft products:** For unbreakable items such as T-shirts and scarves, a shipping bag takes up far less volume than a box.
- **Consider vacuum packing:** For bulky textile products such as pillows, duvets, and coats, vacuum packing reduces the volume considerably.
- **Use filler in moderation:** Use only as much filler as protection requires; excess filler leads you to choose a larger box.
- **Combine or split orders:** Putting several products from the same customer into one box is often cheaper; however, for products of very different sizes, two small boxes can come to less total desi than one large box. Calculate both.

Tip

List your box sizes

Keep the box sizes you use, and the desi of each, in a table. When the packing team picks the most suitable box for a product from this list, shipping costs go down, and the differences between the carrier's invoice and your own calculation shrink.

## Desi and Packaging Tips by Product Type

Each product group runs into the shipping fee in a different way. The table below summarizes what usually determines the fee for commonly sold product groups and what to watch for in order to reduce desi:

| Product group | Usually determined by | Packaging tip |
| --- | --- | --- |
| Clothing, textiles | Desi | Use a shipping bag or a thin box; keep the folding pattern standard |
| Pillows, duvets, coats | Desi | Vacuum packing reduces volume noticeably |
| Shoes, bags | Desi | If the product box is sturdy, consider whether an extra box is needed |
| Cosmetics, personal care | Usually weight | Seal with tape against leaks and fill gaps with a little filler |
| Electronics, small appliances | Depends on the case | Choose an outer box that fits the product's own box, with little empty space |
| Furniture, large home products | Desi | Shipping disassembled and in multiple parcels reduces volume |
| Books, stationery | Usually weight | A thin box with corner protectors is enough |

## How Does Desi Affect Shipping Cost and Pricing?

Whether the shipping fee is added to the product price or charged to the customer separately, it ends up in the cost of every order. That is why product pricing should take shipping cost into account together with desi.

### Calculate the Shipping Cost per Product

Find the chargeable value (desi, a volumetric weight unit, or kilograms) for each product and note the fee your contracted rate sheet assigns to that value. This fee is what the product costs you when shipped on its own. For products that are often sold together, also calculate the desi of the combined package.

### Set the Free Shipping Threshold Based on Desi

Offering free shipping above a certain cart value can support sales, but the average desi of your carts should be considered when setting the threshold. A store that sells many bulky products needs a higher threshold than one selling lightweight items; otherwise free shipping eats into your profit.

### Marketplaces Also Require Desi Information

Marketplaces also use desi in their contracted shipping rates and ask for it when you upload a product. If a product's desi is not defined identically and correctly on your own site and on the marketplaces, shipping deductions can differ from what you expect. That is why the safest approach is to keep the desi in one place and send the same data to all channels.

### The Same Desi Applies to Returns

When a customer returns a product, the return shipment is usually sent in the same box with the same desi. Regardless of who pays the return shipping fee, the effect of desi on shipping cost doubles for products with a high return rate. An accurate size chart and clear product descriptions therefore also reduce shipping costs indirectly.

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## Why Do Desi Settings Matter on an E-Commerce Site?

On an e-commerce site that shows customers the shipping fee in the cart, missing or incorrect desi and weight data causes two problems:

- **Charging too little:** If a product's desi is entered lower than it really is, the shipping fee collected from the customer does not cover the carrier's invoice, and the difference comes out of your profit on every order.
- **Showing too much:** If the desi is entered too high, the customer sees a higher shipping fee in the cart than expected. An unexpected shipping fee is one of the most common reasons for abandoning a cart.

That is why correctly defining each product's desi and weight on the product card is a prerequisite for calculating the shipping fee correctly at the moment of the order.

*Görsel: Desi fields on the product card: weight, width, length, height, automatically calculated desi and the shipping charge by desi (The weight and dimension data on the product card are the basis of the shipping fee shown in the cart.)*

To get the product card right, fill in these four fields completely: the **weight** of the packaged product, the **width, length and height** of the box, the **desi** calculated from these dimensions, and whether the shipping fee will be calculated by desi or at a fixed price.

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## Common Mistakes When Calculating Desi

- **Measuring the product itself:** Desi is calculated from the outer dimensions of the box. A calculation based on the product's dimensions always comes out too low.
- **Looking only at weight:** For light but bulky products, desi determines the shipping fee. A business that prices by kilograms alone loses money on these products.
- **Using the domestic divisor for international shipments:** The divisor can differ for international shipments. A calculation with the wrong divisor distorts pricing.
- **Defining variants with a single desi:** Small and large sizes, or single and multi-packs of the same product, may go into different boxes. Desi should be kept accurately at the variant level.
- **Forgetting campaign bundles:** In promotions such as "buy 2, pay for 1", several products go into the same box; the desi of the package differs from the desi of a single product.
- **Not reflecting box changes on the product card:** When the packaging supplier or the box size changes, the desi on the product card must be updated as well.

## Desi Checklist

Review the list below before putting a new product on sale:

| Check | Why does it matter? |
| --- | --- |
| Was the product weighed in its packaged state? | The actual weight is needed to compare it with the chargeable value. |
| Were the outer dimensions of the box taken? | The carrier measures the package from the outside. |
| Was the desi calculated with the right divisor? | The divisor can differ for domestic and international shipments. |
| Were desi and weight entered on the product card? | The shipping fee in the cart is calculated from this data. |
| Was the desi of each variant checked separately? | Different sizes may go into different boxes. |
| Could a smaller box be used? | Even a reduction in a single dimension noticeably lowers the desi. |

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## Desi and Shipping Management with Faprika

On the Faprika e-commerce platform, desi and shipping fee calculation is managed in a single panel, from the product card to the carrier integration:

- **Product desi price calculation:** You define the desi and weight of your products in the system; the shipping fee is shown correctly to the customer at the order stage and collected. By defining a desi price for each carrier, you can prevent possible financial losses.
- **Shipping desi and fixed price setting:** You can set the shipping fee by desi or at a fixed price.
- **Free shipping above a set amount:** You can make shipping free on orders whose cart total exceeds the value you set.
- **Regional and user-based shipping management:** You can assign different carriers by city and district or by customer group.
- **23 shipping integrations:** The shipment record is created from the panel and the tracking number is added to the order automatically; both you and your customer can track the shipment. You can explore the integrations on the [logistics add-ons](https://www.faprika.com/en/logistics-add-ons) page.

## Frequently Asked Questions

**How is desi calculated?**

For domestic shipments, the width, length and height of the package in centimeters are multiplied and the result is divided by 3000. For example, a 40 × 30 × 20 cm box is 24.000 ÷ 3000 = 8 desi. (Desi is a volumetric weight unit used by Turkish carriers.)

**How many kilograms is 1 desi?**

In shipping calculations, 1 desi corresponds to roughly 1 kilogram. The package's desi is compared with its actual weight, and the larger value is used to calculate the shipping fee.

**Is the shipping fee calculated by desi or by weight?**

Both are checked. Whichever is larger, desi or weight in kilograms, determines the fee. For light but bulky packages, desi is decisive; for small but heavy packages, weight is.

**How is desi calculated for international shipments?**

The formula is the same, but many international carriers divide the volume by 5000 instead of 3000. Because the divisor can vary by carrier and service type, confirm the value used by the carrier you have an agreement with.

**What happens if the desi comes out as a fraction?**

Many carriers round a fractional desi up to the next whole number. Because the rounding rule can vary by carrier, price your products according to the rule of the carrier you work with.

**Where are the measurements taken for desi calculation?**

Measurements are taken in centimeters from the outside of the packed box, not from the product itself. For bulging or irregular packages, use the widest point of each dimension.

Show the shipping fee correctly in the cart and avoid losses

Define desi and weight for your products and enter a desi price for each carrier, so the shipping fee is calculated correctly at the moment of the order. Manage your shipments from a single panel with 23 shipping integrations.

Explore Shipping Integrations

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