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# Convert ingredients to a base unit (Kg, L or units) for recipe costings

## Why?

📦 Converting **purchase formats** (boxes, bottles...) to a **base unit of measure** (kilograms, liters...) is essential.

🚚 When working with different suppliers and products, **purchase formats often vary**, which can create confusion and errors in cost control, recipe costings, and inventory.

🍔 Converting all purchase formats to a base unit makes it possible to compare prices more accurately, define the quantity of product used in recipe costings, and control production costs.

## Convert purchase format to base unit (Kg, L, Uds):

1. Select the **"unidad base"**.

![](https://storage.googleapis.com/helpdesk-haddock-images/recipe-costings/convert-ingredients-to-a-base-unit-kg-l-or-units-for-recipe-costings/images/01-convert-purchase-format-to-base-unit-kg-l-uds.png)

* **Ud** → Products that are sold or used in dishes by **whole units**. Eggs, burgers, soda cans, bottles of wine, etc.
* **Kg** or **gr** → Products consumed by weight or mass. Pasta, fresh tuna, flour, vegetables, spices, etc.
* **L** or **ml** → Liquid products consumed in different quantities. Sauces, stock, beer keg, wine, essences, etc.

2. Enter the **product quantity**.

![](https://storage.googleapis.com/helpdesk-haddock-images/recipe-costings/convert-ingredients-to-a-base-unit-kg-l-or-units-for-recipe-costings/images/02-convert-purchase-format-to-base-unit-kg-l-uds.png)

**The conversion will be saved on the product**, so you won't need to repeat the process when you use it in another recipe costing. You can **change the conversion** at any time from the product settings page.

3. Click "**Guardar**"

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📌 Related articles:

* [Add ingredients to a recipe costing](https://support.haddock.app/en/article/add-ingredients-to-a-recipe-costing-1jdk78/) → How to add products as ingredients in your dish and preparation recipe costings.
* [How to group products ](https://support.haddock.app/en/article/how-to-group-and-ungroup-products-1cylecx/) → We show you how to combine similar products so you can analyze purchases together.
* [Set or edit the reference price](https://support.haddock.app/en/article/define-or-edit-the-reference-price-s8cza0/) → We explain how to define the agreed price with the supplier or the expected price, and how to tell when the purchase price is higher.