Emission factors
The factor set the calculator uses today: every intensity with its unit, TTW share and GLEC v3.2 table, the 32 container trade lanes, the modifiers and the container and RoRo defaults. Trimmed to two factors and one lane in the example.
Response schema
69 fields
Derived from the example response, nested as the JSON is.
data
The payload. Everything an endpoint returns sits under this key.
How the position was produced, for example route_reckoning.
Where the answer on this call came from: direct_carrier or warm_db.
factors[]
Where the answer on this call came from: direct_carrier or warm_db.
container_trade_lanes[]
dry
reefer
modifiers
containers
Tracked containers on the account.
20'st
Vessel capacity in TEU.
40'st
Vessel capacity in TEU.
40'hc
Vessel capacity in TEU.
45'hc
Vessel capacity in TEU.
20'rf
Vessel capacity in TEU.
40'rf
Vessel capacity in TEU.
roro_default_t
curl 'https://api.navo24.com/v1/carbon/factors'
const res = await fetch("https://api.navo24.com/v1/carbon/factors");
const data = await res.json();import requests
res = requests.get("https://api.navo24.com/v1/carbon/factors")
data = res.json(){
"data": {
"factor_set": "glec-3.2-navo-2026.10",
"method": "ISO 14083:2023, GLEC Framework v3.2 (Oct 2025) Module 2 default intensities, well-to-wheel",
"source": "GLEC Framework v3.2 (Smart Freight Centre, October 2025), Module 2 section 3, free public edition",
"factors": [
{
"factor_id": "sea_container_teu",
"class": "Container ship, industry average (dry)",
"value": 71.7,
"unit": "g CO2e / TEU km",
"wtw": true,
"ttw_share": 0.823,
"source": "GLEC Framework v3.2, Module 2 §3, Table 18, Industry Average, Dry",
"navo_assumption": false
},
{
"factor_id": "sea_container_reefer_teu",
"class": "Container ship, industry average (reefer)",
"value": 142.3,
"unit": "g CO2e / TEU km",
"wtw": true,
"ttw_share": 0.822,
"source": "GLEC Framework v3.2, Module 2 §3, Table 18, Industry Average, Reefer",
"navo_assumption": false
}
],
"container_trade_lanes": [
{
"lane_id": "asia_neu",
"trade_lane": "Asia to-from North Europe",
"glec_table": 18,
"dry": {
"wtw": 47.0,
"ttw": 38.7
},
"reefer": {
"wtw": 110.6,
"ttw": 91.2
},
"unit": "g CO2e / TEU km"
}
],
"modifiers": {
"temperature_controlled_road_rail": 1.12,
"road_asia_africa": 1.22,
"rail_lwl": 1.25,
"rail_block_train": 0.9,
"air_distance_uplift_km": 95.0,
"air_short_haul_under_km": 1500.0
},
"containers": {
"20'st": {
"teu": 1.0,
"tare_t": 2.3,
"default_cargo_t": 10.0,
"reefer": false
},
"40'st": {
"teu": 2.0,
"tare_t": 3.75,
"default_cargo_t": 20.0,
"reefer": false
},
"40'hc": {
"teu": 2.0,
"tare_t": 3.9,
"default_cargo_t": 20.0,
"reefer": false
},
"45'hc": {
"teu": 2.25,
"tare_t": 4.8,
"default_cargo_t": 22.5,
"reefer": false
},
"20'rf": {
"teu": 1.0,
"tare_t": 3.0,
"default_cargo_t": 10.0,
"reefer": true
},
"40'rf": {
"teu": 2.0,
"tare_t": 4.8,
"default_cargo_t": 20.0,
"reefer": true
}
},
"roro_default_t": {
"Truck": 30.0,
"Trailer": 25.0,
"Lorry": 18.0,
"Van": 3.0,
"Car": 1.5,
"Plant": 20.0
}
}
}This preview uses documented example data and makes no live request.Get a key to run live.