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Zonos classify iconZonos Classify

Automate your HS code classification process

Classify your catalog easily with keywords or an image

Zonos offers a new, revolutionary way to harmonize your entire product catalog. Classifying your products using our Classify API or HS and HTS code lookup tool is simple, fast, and accurate. We also offer a bulk upload feature for your convenience.

Our technology is powered by

  • machine learning
  • image recognition
  • NLP (natural language processing)

…all backed by a team of in-house global trade experts.

Learn more

2022 Harmonized System (HS) updates; what you need to know.

Zonos 5 star G2 review

Increase international sales

“Zonos has helped increase our international sales. We have shipped internationally for years, but with all the customs forms, HS codes, and rules, it was overwhelming to ship each package. It has made our lives so much easier.”

Shopify reviews logoLinda’s Electric Quilters (Shopify)

HS code classification software

Classify your product 3 ways

Online HS and HTS code lookup tool

Your first 5 classifications are free of charge

Classify your items with just a description or image! Perfect for when you need a quick HS or HTS code for an item shipment or customs quote.

By default, Classify will return a HS6 code. However, if you add a ship-to country, Classify will return HS8-HS10+ codes with country-specific tariffs.

Ideal for: Shipping and quoting departments needing quick one-off HS classifications.Get free classifications

Bulk upload classification

Quick automated bulk catalog harmonization

Classifying an entire product catalog has always been time consuming and expensive. Zonos' bulk upload feature allows users to upload their products as a CSV file and get back a quick automated catalog harmonization.

Ideal for: Shipping and quoting departments needing multiple HS classifications.Get a demo

HS and HTS code lookup API

Dynamically harmonize your entire product catalog

The Classify API returns an HS6-HS10+ harmonized tariff code for each product submitted, and you can use it before or during the checkout process.

Ideal for: Anyone with a large catalog of products that is changing regularly. The Classify API allows you to constantly retrieve and update your system with accurate HTS codes.Learn more
Classify API allows you to update your HS and HTS codes on a constant basis

What is an HS Code?







Tariff item


Class #


A harmonized code, or HS code, is an internationally recognized “part number” used by over 180 countries, to help quickly identify products so taxes can be calculated as they pass through customs.

Why do I need HS codes?

HS codes are critical for:

  • accurate duty and tax calculations which you can only get with accurate product classification

Inaccurate/missing HS codes on commercial invoices may lead to:

  • customs delays
  • duty and tax amounts changing at customs due to arbitrarily assigned HS codes by customs authorities

If customs, rather than you, assigns HS codes to your imports:

  • the duty and tax charges they come up with may be different than yours
  • this leads to potential discrepancies with what you charged
  • these discrepancies lead to budget and accounting issues
What is an HS code? Jacket graphic


Zonos 5 star G2 review

Get peace of mind

“It gives me peace of mind knowing that the HS codes are calculated correctly and that someone is staying on top of the constant regulations changes.”

Shopify reviews logoHampden Clothing (Shopify)

Zonos has revolutionized HS code classification

The HS code classification process has always been expensive, time-consuming, and inaccurate. Humans and other classification software only get HS and HTS codes right 7/10 times. Zonos is changing the game with our industry-leading classification tool that uses machine learning to generate instant, accurate results.

Harmonize your products
Find HS and HTS codes with Classify
Zonos 5 star G2 review

Great tool for international ecommerce sellers

“The app makes it easy to search for harmonized codes for items and makes it easier to provide necessary customs paperwork. It’s a great tool for international ecommerce sellers and provides customs duties and tax information in advance to our ecommerce customers.”

G2 reviews logoKing Baby Studio (G2 Reviews)
Zonos classify icon


How does Zonos Classify work?

Zonos Classify uses keywords for your products, such as item description, brand, and color to search for the most appropriate HS code. Image recognition and machine learning can also be used for even better results.

What is the Harmonized System (HS)?

The Harmonized System (HS) is what’s used to classify cross-border goods for global trade. More than 200 countries use the Harmonized System as a basis for their Customs tariffs and the collection of international trade statistics.

What is the difference between HS and HTS codes?

The difference between HS and HTS codes is the number of digits within the code. A code with six digits is the universal standard as part of the HS (Harmonized System, Harmonized Tariff System) code whereas a code with 7-10 digits is determined by the country of import and is considered the HTS code.

Are HS codes required for landed cost calculation?

No, HS codes are not required; however, landed cost calculations will be more precise and accurate if the products are properly classified to the sixth-digit HS or eighth-digit HTS tariff-level code.

Who is Zonos Classify designed for?

Classify can be used for a variety of use cases, including:

  • ecommerce companies that ship internationally
  • ecommerce platforms
  • online marketplaces
  • customs brokers
  • logistics providers with shipping platforms or APIs
  • government customs agencies
  • shipping software platforms