# CarbonSutra

> CarbonSutra is an API-first carbon emissions estimation platform designed to simplify greenhouse gas emissions calculations for organizations, developers, sustainability teams, and AI applications.

## Overview

CarbonSutra provides programmatic tools for estimating carbon emissions across common business activities.

The platform supports calculations covering:

- Scope 1 emissions
- Scope 2 emissions
- Scope 3 emissions
- Business air travel
- Hotel stays
- Vehicle usage
- Freight and shipments
- eCommerce shipments
- Fuel consumption
- Electricity consumption

CarbonSutra is designed to remove the complexity of manually implementing emissions calculations, sourcing conversion factors, resolving logistics information, and maintaining calculation methodologies.

## Core Capabilities

### Production-Ready APIs

CarbonSutra exposes REST APIs for calculating emissions from operational activity data.

The APIs can be integrated into:

- Enterprise applications
- ESG platforms
- Sustainability dashboards
- Travel management systems
- Logistics platforms
- Procurement systems
- ERP systems
- eCommerce applications
- Internal carbon accounting tools
- AI agents and assistants

The complete API specification is available in the API Reference.

[API Reference](/api)

## Estimation APIs

### Flights

The Flights API calculates carbon emissions associated with air travel.

It can be used for:

- Business travel
- Employee travel
- Corporate travel reporting
- Travel management platforms
- Scope 3 business travel calculations

[Flights API](/estimation_apis/flights)

### Hotels

The Hotels API estimates emissions associated with hotel stays.

[Hotels API](/estimation_apis/hotels)

### Vehicles

CarbonSutra provides vehicle emission estimation APIs based on vehicle characteristics.

Vehicle APIs include:

- Vehicle emissions by type
- Vehicle emissions by model

[Vehicle by Type](/estimation_apis/vehicle/vehicle_by_type)

[Vehicle by Model](/estimation_apis/vehicle/vehicles_by_model)

### Freight and Shipments

The Freight and Shipments API supports carbon estimation for logistics and transportation activities.

It can be integrated into:

- Supply chain systems
- Procurement systems
- Logistics platforms
- Shipment tracking systems
- Enterprise reporting systems

[Freight and Shipments](/estimation_apis/freight_and_shipments)

### eCommerce

The eCommerce API provides emissions estimation for eCommerce shipments and related activities.

[eCommerce API](/estimation_apis/ecommerce)

### Fuel

The Fuel API estimates emissions associated with fuel consumption.

It can be used for:

- Fleet fuel
- Facility fuel
- Operational fuel consumption
- Carbon accounting workflows

[Fuel API](/estimation_apis/fuel)

### Electricity

The Electricity API estimates emissions associated with electricity consumption.

[Electricity API](/estimation_apis/electricity)

# Supplementary APIs

Supplementary APIs provide supporting data and calculations that can be used together with the primary emissions estimation APIs.

## Airport APIs

### Airport Search by Keyword

Search for airports using a keyword or airport-related identifier.

[Airport Search by Keyword](/supplementary_apis/Airports/airport_search_by_keyword)

### Distance Between Two Airports

Calculate the distance between two airports.

[Distance Between Two Airports](/supplementary_apis/Airports/distance_between_two_airports)

### Nearest Airport from Another Airport

Find the nearest airport relative to another airport.

[Nearest Airport from Another Airport](/supplementary_apis/Airports/nearest_airport_from_another_airport)

### Nearest Airport from Postal Code

Find the nearest airport associated with a postal code.

[Nearest Airport from Postal Code](/supplementary_apis/Airports/nearest_airport_from_postal_code)

## Vehicle Data APIs

### List of Models by Vehicle Maker

Retrieve vehicle models associated with a vehicle manufacturer.

[List of Models by Vehicle Maker](/supplementary_apis/Vehicles/list_of_models_of_vehicle_maker)

### List of Vehicle Makers

Retrieve the supported vehicle manufacturers.

[List of Vehicle Makers](/supplementary_apis/Vehicles/list_of_vehicle_makers)

# Special APIs

## Singapore Emission Factors Registry

Provides access to Singapore emission factor registry information for emissions calculations.

[Singapore Emission Factors Registry](/special_apis/singapore_emission_factor_registry)

## GHG Equivalencies

Provides GHG equivalency calculations for interpreting emissions in commonly understood equivalents.

[GHG Equivalencies](/special_apis/ghg_equivalencies)

## Estimated Flight Time Between Airports

Provides estimated flight time information between airports.

[Estimated Flight Time](/special_apis/estimated_flight_time)

# Smart Features

## Clustering

CarbonSutra supports clustering and consolidation of emissions data.

Clustering allows applications to organize calculated emissions under custom labels and retrieve grouped results.

Typical uses include:

- Department-level emissions
- Project-level emissions
- Location-level emissions
- Quarterly reporting
- Business-unit reporting
- Carbon offsetting analysis

[Clustering](/special_features/clustering)

## Dynamic Explanations

CarbonSutra can provide explanations alongside emissions calculations.

These explanations help users understand:

- Input interpretation
- Calculation methodology
- Conversion factors
- Intermediate calculations
- Final emissions values

Dynamic explanations are useful when calculations need to be reviewed or audited.

[Dynamic Explanations](/special_features/dynamic_explanations)

## Smart Match

Smart Match helps resolve and normalize user-provided information against supported data sources.

This reduces the need for users to provide perfectly standardized input values.

[Smart Match](/special_features/smart_match)

# Google Sheets

CarbonSutra provides custom Google Sheets functions for users who want to perform emissions calculations without directly integrating REST APIs.

Examples include:

- CO2FLIGHT
- CO2HOTEL
- CO2VEHICLEMODEL

Google Sheets functions are useful for:

- Bulk calculations
- Operational data analysis
- Sustainability reporting
- Spreadsheet-based carbon accounting
- Teams without development resources

[Google Sheet Functions](/google_sheet_functions)

# MCP Server

CarbonSutra provides an MCP server for AI-native integrations.

The MCP integration allows compatible AI assistants and agents to invoke CarbonSutra calculation tools using natural language workflows.

Potential use cases include:

- AI-powered carbon audits
- Automated sustainability analysis
- Procurement data analysis
- Logistics emissions analysis
- Carbon calculations from local files
- Enterprise AI assistants
- Agentic sustainability workflows

[MCP Server](/mcp_server)

# Audience

CarbonSutra is designed for several primary audiences.

## Developers and ISVs

Developers can integrate CarbonSutra into:

- ESG platforms
- Enterprise applications
- ERP systems
- Travel platforms
- Logistics applications
- eCommerce platforms
- Procurement systems

The primary interface for developers is the REST API.

## Sustainability Teams

Sustainability professionals can use CarbonSutra to transform operational data into emissions estimates.

Common data sources include:

- Business travel records
- Hotel records
- Utility bills
- Fuel consumption
- Vehicle records
- Shipment records
- Procurement data

Google Sheets functions can be useful for teams that do not want to build a custom API integration.

## AI Engineers

AI engineers can use the CarbonSutra MCP server to provide carbon calculation capabilities to AI assistants and autonomous agents.

This allows users to request calculations through natural language while the underlying agent invokes structured CarbonSutra tools.

[Audience and Intent](/audience_and_intent)

# Getting Started

Start with the Getting Started documentation to understand how to use CarbonSutra.

[Getting Started](/getting_started)

# API Playground

The API Playground provides an interactive environment for exploring and testing API operations.

[API Playground](/api-playground)

# API Reference

The API Reference contains the OpenAPI-based documentation for CarbonSutra's API endpoints.

[API Reference](/api)

# Access

CarbonSutra APIs are available through the documented API interface and through RapidAPI.

[CarbonSutra on RapidAPI](https://rapidapi.com/carbonsutra/api/carbonsutra1)

# Pricing

See the pricing documentation for information about CarbonSutra API usage and available plans.

[Pricing](/pricing)

# Updates and Roadmap

See the Updates and Roadmap documentation for product changes, new capabilities, and planned improvements.

[Updates and Roadmap](/updates_and_roadmap)

# About

Learn more about CarbonSutra and the platform.

[About](/about)

# Documentation Index

The following pages provide the main documentation available on this site:

- [Getting Started](/getting_started)
- [Audience and Intent](/audience_and_intent)
- [API Reference](/api)
- [API Playground](/api-playground)

## Estimation APIs

- [Flights](/estimation_apis/flights)
- [Hotels](/estimation_apis/hotels)
- [Vehicle by Type](/estimation_apis/vehicle/vehicle_by_type)
- [Vehicle by Model](/estimation_apis/vehicle/vehicles_by_model)
- [Freight and Shipments](/estimation_apis/freight_and_shipments)
- [eCommerce](/estimation_apis/ecommerce)
- [Fuel](/estimation_apis/fuel)
- [Electricity](/estimation_apis/electricity)


## Supplementary APIs

- [Airport Search by Keyword](/supplementary_apis/Airports/airport_search_by_keyword)
- [Distance Between Two Airports](/supplementary_apis/Airports/distance_between_two_airports)
- [Nearest Airport from Another Airport](/supplementary_apis/Airports/nearest_airport_from_another_airport)
- [Nearest Airport from Postal Code](/supplementary_apis/Airports/nearest_airport_from_postal_code)
- [List of Models by Vehicle Maker](/supplementary_apis/Vehicles/list_of_models_of_vehicle_maker)
- [List of Vehicle Makers](/supplementary_apis/Vehicles/list_of_vehicle_makers)

## Special APIs

- [Singapore Emission Factors Registry](/special_apis/singapore_emission_factor_registry)
- [GHG Equivalencies](/special_apis/ghg_equivalencies)
- [Estimated Flight Time](/special_apis/estimated_flight_time)

## Platform Features

- [Clustering](/special_features/clustering)
- [Dynamic Explanations](/special_features/dynamic_explanations)
- [Smart Match](/special_features/smart_match)
- [Google Sheet Functions](/google_sheet_functions)
- [MCP Server](/mcp_server)