CO2 API - Freight Emissions Calculator

CO2 Emissions Calculator for Ocean Freight

Monitor carbon emissions of any sea voyage by using Sinay’s CO2 Emissions Calculator API. 
Get an estimation for a voyage ahead of time or calculate emissions post voyage. 

overview of the CO2 api


CO2 Vessel Calculator

Monitor and reduce the environmental impact of the maritime transportation

Maritime transportation plays a critical role in global trade, but it also has a significant environmental impact. By using our API,s you can gain valuable insights into your vessels’ environmental impact and take proactive measures to reduce carbon emissions and noise pollution. This will not only help to protect the environment, but it can also improve your vessel’s efficiency and reduce costs.

APIs used



Ports and Vessels API

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Quick & easy integration

Swagger & Postman Collection documentations.
Average implementation time : less than half a day.

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Convenient pricing

Our subscription-based pricing is designed to meet your needs, with flexible plans that allow you to pay only for what you use, without any hidden costs.

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Free plan

Try our API platform for free with 100 monthly API calls and experience the benefits of our powerful tools and services before committing. No credit card is required.

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Our system is designed to ensure maximum performance and reliability, with a rate-limit of 10 calls per minute to protect against abuse and ensure fair usage.

Made for developers

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Get Your API Key

Get started now by generating your API key on the Developer platform.

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Select your vessel and route

Using IMO or MMSI, select the vessel you wish to calculate emissions for. This allows us to retrieve key information such as vessel type, current position, speed, fuel type and historical performance.

Select Port of Departure and Port of Destination. This allows us to compile routes that can be taken by the vessel and assess distance, time to go and port congestion. 

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Answer Format

The response will provide an estimation in tons of CO2 emitted per TEU for the specified voyage. 

    "input": {
        "vessel": {
            "imo": 9706906
            "mmsi": null
        "departure": {
        "portCode": FRLEH
        "arrival": {
        "portCode": ESBCN
    "length": 1763.064430339752,
    "co2EmissionResult": {
        "vesselMethodResult": {
            "co2Ttw": 0.44152444516991896
    "tradeLaneMethodResult": {
            "co2Wtt": 0.02612156259991377,
            "co2Ttw": 0.3330499231489006,
            "co2Wtw": 0.35917148574881436

Certified Methodology

GLEC - Global logistics emissions council

Sinay’s CO2 emissions calculations follow the Global Logistics Emissions Council (GLEC) framework and have been certified by the Smart Freight Center.  

All APIs

Sinay APIs

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Container tracking

Integrate Container tracking information (location, delivery status and eta) in your own system by API. Provide easy cargo tracking with our all-in one API.

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Port Congestion API

Get a real-time status of Port Congestion worldwide, filter Port Congestion per Vessel Type and characteristics and compare Port Congestion Status with average port congestion.

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Easily integrate Sinay’s vessel ETA Calculator into your system by API. Provide accurate predictions everytime thanks to our AI models.

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Noise API

Monitor Sound Exposure Level. Monitor SEL for any vessel type or journey worldwide. Compare with LLoyds and Bureau Veritas standards.


Ports and Vessels API

Find the port UNLOCODE or the vessel identifiers corresponding to the name you already know. Use this API to easily integrate our other APIs and improve your user experience.

Third party APIs

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Vessel API

Get All Vessel Details and Position (AIS). Tap into compete AIS data, from live vessel position, vessel details, vessel speed, destination, and many other datasets.

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Metocean API

Retrieve historical Ocean Weather Data for any zone and from any period.

Sustainable Development Goals

SDG 9, industry, innovation and infrastructure
SDG 11, sustainable cities and communities
SDG 13, climate action
SDG 14, life below water

By utilizing data to track and monitor CO2 emissions in the maritime industry, Sinay’s innovative CO2 API is dedicated to enhancing the sustainability and efficiency of the sector. The API provides real-time information on carbon emissions, helping companies to reduce their carbon footprint and make informed decisions that optimize supply chains and reduce port congestion. By promoting environmentally conscious practices, the CO2 API is a significant step in the fight against climate change and in preserving marine biodiversity.

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