Carbon Footprint Calculator API

API ID 2

Calculate the overall carbon footprint of electricity, fuel, road travel, flights, public transit and paper, and check the local air quality index.

100% uptime 50 ms avg response

API Documentation

Endpoints

Request
Return the air quality health index from ground-level ozone, nitrogen dioxide and fine particulate matter. The index is a whole number: 1-3 low, 4-6 moderate, 7-10 high, above 10 very high.
Endpoint ID: 36388
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36388/air+quality+health+index
INPUT PARAMETERS

Air Quality Health Index — Endpoint Features

Object Description
o3 Required Ground-level ozone in parts per billion.
no2 Required Nitrogen dioxide in parts per billion.
pm Required Fine particulate matter PM2.5 in micrograms per cubic metre.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

o3
no2
pm
API EXAMPLE RESPONSE
JSON
{
    "airQualityHealthIndex": 2,
    "success": true
}
Air Quality Health Index — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36388/air+quality+health+index?o3=10&no2=10&pm=10' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Calculate how many trees it took to produce a weight of paper. The unit is kilograms or pounds.
Endpoint ID: 36389
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36389/tree+equivalent
INPUT PARAMETERS

Tree Equivalent — Endpoint Features

Object Description
weight Required Weight of the paper.
unit Required Unit of the weight, kg or lb.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

weight
unit
API EXAMPLE RESPONSE
JSON
{
    "numberOfTrees": 2.4,
    "success": true
}
Tree Equivalent — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36389/tree+equivalent?weight=100&unit=kg' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Calculate CO2e from electricity use in kilowatt hours. Location is an ISO country code or a region, and the factor comes from Ember.
Endpoint ID: 36390
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36390/traditional+energy
INPUT PARAMETERS

Traditional Energy — Endpoint Features

Object Description
consumption Required Electricity use in kilowatt hours.
location Required ISO alpha-3 country code or a region: World, Africa, Asia, Europe, EU, NorthAmerica, LatinAmerica, MiddleEast, Oceania, ASEAN, G7, G20, OECD. UK, Canada and OtherCountry still work.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

consumption
location
API EXAMPLE RESPONSE
JSON
{
    "carbon": "38.44 kg co2",
    "location": "United States",
    "factor_year": 2025,
    "success": true
}
Traditional Energy — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36390/traditional+energy?consumption=100&location=USA' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Calculate CO2e from clean electricity. The source is Solar, Wind, HydroElectric, Biomass, Geothermal or Tidal, with that exact spelling.
Endpoint ID: 36391
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36391/clean+energy
INPUT PARAMETERS

Clean Energy — Endpoint Features

Object Description
energy Required Clean source: Solar, Wind, HydroElectric, Biomass, Geothermal or Tidal.
consumption Required Electricity use in kilowatt hours.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

energy
consumption
API EXAMPLE RESPONSE
JSON
{
    "carbon": "1 kg co2",
    "success": true
}
Clean Energy — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36391/clean+energy?energy=HydroElectric&consumption=100' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Transform litres of Petrol, Diesel or LPG into CO2e using the 2026 DESNZ/DEFRA factors for fuel without a biofuel blend.
Endpoint ID: 36392
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36392/fuel+to+carbon
INPUT PARAMETERS

Fuel To Carbon — Endpoint Features

Object Description
type Required Fuel type: Petrol, Diesel or LPG.
litres Required Amount of fuel in litres.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

type
litres
API EXAMPLE RESPONSE
JSON
{
    "carbon": "2353.72 kg co2",
    "factor_year": 2026,
    "success": true
}
Fuel To Carbon — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36392/fuel+to+carbon?type=Petrol&litres=1000' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
CO2e for a car or van trip in kilometres. Factors are the 2026 DESNZ/DEFRA conversion factors.
Endpoint ID: 36393
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36393/car+travel
INPUT PARAMETERS

Car Travel — Endpoint Features

Object Description
distance Required Distance travelled in kilometres.
vehicle Required Vehicle type: SmallPetrolCar, MediumPetrolCar, LargePetrolCar, SmallDieselCar, MediumDieselCar, LargeDieselCar, MediumHybridCar, LargeHybridCar, MediumLPGCar, LargeLPGCar, MediumCNGCar, LargeCNGCar, SmallPetrolVan, LargePetrolVan, SmallDieselVan, MediumDieselVan, LargeDieselVan, LPGVan or CNGVan.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

distance
vehicle
API EXAMPLE RESPONSE
JSON
{
    "carbon": "14.327 kg co2",
    "factor_year": 2026,
    "success": true
}
Car Travel — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36393/car+travel?distance=100&vehicle=SmallDieselCar' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
CO2e per passenger for a flight, including radiative forcing. Factors are the 2026 DESNZ/DEFRA conversion factors.
Endpoint ID: 36394
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36394/flight
INPUT PARAMETERS

Flight — Endpoint Features

Object Description
distance Required Flight distance in kilometres.
type Required Flight type: DomesticFlight, ShortEconomyClassFlight, ShortBusinessClassFlight, LongEconomyClassFlight, LongPremiumClassFlight, LongBusinessClassFlight or LongFirstClassFlight.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

distance
type
API EXAMPLE RESPONSE
JSON
{
    "carbon": "22.928 kg co2",
    "factor_year": 2026,
    "success": true
}
Flight — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36394/flight?distance=100&type=DomesticFlight' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
CO2e for a motorbike trip in kilometres. Small is up to 125cc, medium up to 500cc and large above that. Factors are DESNZ/DEFRA 2026.
Endpoint ID: 36395
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36395/motorbike
INPUT PARAMETERS

MotorBike — Endpoint Features

Object Description
distance Required Distance travelled in kilometres.
type Required Motorbike size: SmallMotorBike, MediumMotorBike or LargeMotorBike.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

distance
type
API EXAMPLE RESPONSE
JSON
{
    "carbon": "8.319 kg co2",
    "factor_year": 2026,
    "success": true
}
MotorBike — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36395/motorbike?distance=100&type=SmallMotorBike' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
CO2e per passenger for taxi, bus, coach, rail, subway or ferry. ClassicBus is a local bus outside London, EcoBus is a London bus and Subway is the London Underground. Factors are DESNZ/DEFRA 2026.
Endpoint ID: 36396
POST https://zylalabs.com/api/2/carbon+footprint+calculator+api/36396/public+transit
INPUT PARAMETERS

Public Transit — Endpoint Features

Object Description
distance Required Distance travelled in kilometres.
type Required Transport type: Taxi, ClassicBus, EcoBus, Coach, NationalTrain, LightRail, Subway, FerryOnFoot or FerryInCar.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

distance
type
API EXAMPLE RESPONSE
JSON
{
    "carbon": "29.722 kg co2",
    "factor_year": 2026,
    "success": true
}
Public Transit — CODE SNIPPETS

curl --location --request POST 'https://zylalabs.com/api/2/carbon+footprint+calculator+api/36396/public+transit?distance=200&type=Taxi' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Carbon Footprint Calculator API simply include your bearer token in the Authorization header.

Headers
Header Description
Authorization Required Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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Overview

This API estimates the carbon footprint of everyday activities and returns the result in kilograms of carbon dioxide equivalent. It covers electricity from the conventional grid and from cleaner sources such as solar, wind, hydro, biomass, geothermal and tidal power. It converts petrol, diesel and liquefied petroleum gas into emissions from the volume used. Road travel includes cars, vans and motorbikes, so a trip can be measured by distance and by the kind of vehicle. Flights are measured per passenger across domestic and international journeys, and across economy and premium cabins. Public transit includes taxis, buses, coaches, trains, trams, the underground and ferries. A separate calculation turns a weight of paper, in kilograms or pounds, into the number of trees needed to produce it. The air quality health index combines ground level ozone, nitrogen dioxide and fine particles into a single risk figure, from low to very high. Results are meant for product screens, reports and internal tracking, where a team needs a consistent number for an activity rather than an environmental audit. Each call answers one question, such as a journey, a fuel purchase, a power bill or a paper weight, and the response states whether the calculation succeeded.

Carbon Footprint Calculator API FAQs

The API can estimate the carbon footprint for electricity (from conventional and cleaner sources like solar, wind, hydro, biomass, geothermal, and tidal), fuel (petrol, diesel, LPG based on volume), road travel (cars, vans, motorbikes based on distance and vehicle type), flights (per passenger for domestic and international, economy and premium cabins), public transit (taxis, buses, coaches, trains, trams, underground, ferries), and paper (converted from weight to the number of trees needed).

The API returns the estimated carbon footprint in kilograms of carbon dioxide equivalent (kg CO2e). The response also indicates whether the calculation was successful.

In addition to carbon footprint calculations, the API can also provide the local air quality index. This index combines ground-level ozone, nitrogen dioxide, and fine particles into a single risk figure, ranging from low to very high.

This API is ideal for product screens, reports, and internal tracking. It provides consistent carbon footprint numbers for everyday activities like journeys, fuel purchases, or electricity usage, which can be used for user engagement, environmental reporting, or team performance tracking without requiring a full environmental audit.

For electricity, you provide details about grid vs. cleaner sources. For fuel, you input the volume used. Road travel requires distance and vehicle type. Flights need passenger count, journey type (domestic/international), and cabin class. Public transit calculations consider the mode of transport. Paper calculations require the weight of the paper.

General FAQs

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