CO2Calc

CO₂ emissions calculator for road freight

Calculate Well-to-Wheel and Tank-to-Wheel emissions for trucks with official EU emission factors, split a truck's CO₂ between your clients' shipments and send them a PDF report — in seconds.

Start calculating How we calculate
  • ✓ Free to use
  • ✓ No sign-up for quick calculations
  • ✓ EU emission factors

Choose your profile

Pick the one that fits you — you can switch at any time.

How it works

  1. 1

    Pick a vehicle

    Choose a standard truck or your own vehicle — fuel and typical consumption are filled in.

  2. 2

    Enter the trip

    Distance, and for forwarders every shipment on board: client, cargo, weight.

  3. 3

    Get the report

    WTW or TTW CO₂, intensity per km and a PDF ready to send to your client.

Built for transport and logistics

WTW & TTW

Well-to-Wheel for the full fuel life cycle, Tank-to-Wheel for direct emissions — switch with one click.

Official EU factors

Regulation (EU) 2022/996, JRC JEC v5 and RED II/III — monitored and updated by our team.

CO₂ per shipment

Forwarders split a truck's CO₂ between clients by tonne-kilometres, following the GLEC Framework.

PDF reports

A clean, branded report per trip, shipment or client — ready to attach to an invoice.

Telematics data

Connect Mapon to calculate from real CAN fuel and distance data instead of estimates.

History & fleets

A free account keeps every calculation, fleet group and client base in one place.

Fuels covered

  • Diesel
  • LNG
  • Bio-LNG
  • HVO (Rapeseed)
  • HVO (Waste)

See every factor and its EU source on the methodology page.

Frequently asked questions

What is the difference between WTW and TTW emissions?

Tank-to-Wheel (TTW) covers only what the engine emits while driving. Well-to-Wheel (WTW) adds the upstream part — producing, refining and transporting the fuel — so it shows the full fuel life cycle. Use TTW when you're asked for direct (tailpipe) emissions and WTW for a complete carbon footprint.

Which emission factors does CO2Calc use?

Official EU sources: Commission Implementing Regulation (EU) 2022/996 and the JRC JEC Well-to-Wheels study v5 for diesel and fossil LNG, and Directive (EU) 2018/2001 (RED II/III) for HVO and Bio-LNG. Our team monitors these sources and updates the factors when official values change.

Is CO2Calc free?

Yes. The calculator is free to use. Quick calculations need no account; a free account lets you keep your calculation history, fleets and client base.

How is a truck's CO₂ split between several shipments?

For freight forwarders, the truck's CO₂ for the trip is allocated to each shipment by its share of tonne-kilometres (weight × distance), following the GLEC Framework. You get the CO₂ per shipment and per client, with a PDF for each.

Which fuels are covered?

Diesel, fossil LNG, Bio-LNG (from manure), HVO from rapeseed and HVO from waste oils. Electric vehicles, petrol, LPG and CNG are not covered, because there is no single verified EU factor we could apply to them.

Can I send the result to my client?

Yes. Every calculation can be downloaded as a branded PDF report that shows the result in the scope you chose (WTW or TTW), the distance, the fuel and the method used.

Can I use real data from my telematics?

Transport companies using Mapon can connect their API key: CO2Calc then reads the real fuel use and distance from the vehicles' CAN data for any period.