# FreightAPIs

> Logistics data APIs for developers: NMFC freight classification, LTL/parcel carrier terminal locations for 10 carriers (including 98,000+ USPS retail locations), Amazon Hub drop points, and 4,400+ global seaports. Server-rendered lookup pages plus 76 REST endpoints for TMS, ERP, and shipping integrations. Free tier available (20 API calls/month).

## Core lookups & tools

- [Unified carrier lookup](https://freightapis.dev/carriers): Search every supported US carrier at once by ZIP code, city, or state, with an automatic nearby-ZIP fallback. One REST call: https://freightapis.dev/api/locations.
- [Carrier terminal lookups](https://freightapis.dev/carriers): Index of every supported LTL/parcel carrier with terminal/location lookup by state, ZIP, or country.
- [NMFC code lookup](https://freightapis.dev/nmfc-lookup): Free National Motor Freight Classification (NMFC) code and freight-class search across 3,000+ articles.
- [Freight class calculator](https://freightapis.dev/freight-class-calculator): Calculate NMFC freight class from dimensions and weight (density-based).
- [Density calculator](https://freightapis.dev/tools/density-calculator): Compute shipment density in lb/ft³.
- [Dimensional weight calculator](https://freightapis.dev/tools/dimensional-weight-calculator): Compute dimensional (DIM) weight for LTL/parcel.
- [Container load calculator](https://freightapis.dev/tools/container-load-calculator): 3D container stuffing planner - how many boxes or pallets fit in a 20ft/40ft/High Cube container or truck, with volume and weight utilization.
- [USPS location finder](https://freightapis.dev/carriers/usps): Look up post offices and USPS retail locations by state, city, or ZIP, with addresses and coordinates — 98,000+ locations, the largest dataset on the site. REST API at https://freightapis.dev/api/usps-location.
- [Seaport lookup](https://freightapis.dev/ports): Find seaports by country, UN/LOCODE, shipping company, or geographic radius.
- [Accessorial code lookup](https://freightapis.dev/accessorial-codes): Find the accessorial service code each LTL carrier expects — liftgate, residential, inside delivery, appointment, limited access — or paste a code to identify which carrier it belongs to. Every value is labelled with its source. REST API at https://freightapis.dev/api/accessorials.

## Carriers

- [ABF Freight Service Points Lookup](https://freightapis.dev/carriers/abf): Look up ABF Freight System, Inc. service points by state or ZIP; REST API at https://freightapis.dev/api/abf-location.
- [Central Transport Terminals Lookup](https://freightapis.dev/carriers/ct): Look up Central Transport International terminals by state or ZIP; REST API at https://freightapis.dev/api/ct-location.
- [CEVA Logistics Offices & Warehouses Lookup](https://freightapis.dev/carriers/ceva): Look up CEVA Logistics AG offices & warehouses by country; REST API at https://freightapis.dev/api/ceva-location.
- [C.H. Robinson Offices Lookup](https://freightapis.dev/carriers/chrobinson): Look up C.H. Robinson Worldwide, Inc. offices by country; REST API at https://freightapis.dev/api/chrobinson-location.
- [Estes Express Terminals Lookup](https://freightapis.dev/carriers/estes): Look up Estes Express Lines terminals by state or ZIP; REST API at https://freightapis.dev/api/estes-location.
- [GLS US Drop Boxes Lookup](https://freightapis.dev/carriers/gls): Look up GLS US (General Logistics Systems) drop boxes by state or ZIP; REST API at https://freightapis.dev/api/gls-location.
- [Saia LTL Freight Terminals Lookup](https://freightapis.dev/carriers/saia): Look up Saia Inc. terminals by state or ZIP; REST API at https://freightapis.dev/api/saia-location.
- [SEKO Logistics Offices & Hubs Lookup](https://freightapis.dev/carriers/seko): Look up SEKO Logistics offices & hubs by country; REST API at https://freightapis.dev/api/seko-location.
- [TForce Freight Terminals Lookup](https://freightapis.dev/carriers/tforce): Look up TForce Freight (formerly UPS Freight) terminals by state or ZIP; REST API at https://freightapis.dev/api/tforce-location.
- [USPS Locations Lookup](https://freightapis.dev/carriers/usps): Look up United States Postal Service locations by state or ZIP; REST API at https://freightapis.dev/api/usps-location.

## API documentation

- [API overview](https://freightapis.dev/docs): Authentication, rate limits, errors, and endpoint index.
- [Pricing](https://freightapis.dev/pricing): Free, Starter ($49/mo), Pro ($99/mo), and Enterprise plans.
- [Machine-readable OpenAPI spec](https://freightapis.dev/openapi.yaml): Full OpenAPI definition of every endpoint.
- [Official SDKs](https://freightapis.dev/sdks): Node.js (npm: freightapis) and Python (PyPI: freightapis) clients.

## Knowledge base

- [Freight class guide](https://freightapis.dev/freight-class): What freight class is, the 18 NMFC classes (50-500), how to calculate class from density, and 8 worked examples (https://freightapis.dev/freight-class/examples).
- [Learn: freight classification & LTL guides](https://freightapis.dev/learn): Plain-English guides — what NMFC is, how freight class works, how LTL shipping works, how to calculate density.