From Trip to Report. Automatically.

How CarbonTrack
works.

Six steps. Thirty seconds per trip. A complete audit-ready Scope 3 report that builds itself throughout the year.

The Workflow

Trip to report, automatically.

The workflow that replaces weeks of manual data work every year.

1

Your team member takes a business trip

London to Edinburgh for a client meeting. Domestic flight. One passenger. She's back the same day. Previously: this would go in an email to the finance team and sit there for six months.

CarbonTrack works at the point of the trip. Not at year-end data collection. This is the broken step every other tool ignores.
2

They log it. 30 seconds.

They open CarbonTrack, enter origin: London Heathrow, destination: Edinburgh Airport, mode: domestic flight, passengers: 1. That is it. No spreadsheet. No receipts. No chasing.

Optional: booking reference for cross-referencing against Concur or Expensify. Nothing else required.
3

CarbonTrack calculates instantly

The Haversine Great Circle formula calculates the actual flight path distance between LHR and EDI: 534km. The correct DEFRA 2025 domestic flight emission factor is applied automatically: 0.25500 kgCO2e/km. Result: 136.17 kgCO2e.

Live calculation

London Heathrow → Edinburgh · Domestic economy · 1 passenger
Distance (Haversine)
534 km
×
DEFRA 2025 Factor
0.25500 kgCO2e/km
×
Passengers
1
=
Emissions
136.17 kgCO2e
Source: DEFRA 2025 Conversion Factors Table 5, row: Domestic aviation, economy class · Haversine formula using IATA airport coordinates · Methodology: GHG Protocol Scope 3
4

Audit trail created. Automatically.

Every number is recorded: distance, emission factor, DEFRA table reference, methodology, formula, result, timestamp, user who logged it. The record is immutable once created. Nothing can be edited without a trace.

When an auditor asks "how did you calculate this?" you show them this record. Every trip. Every time. No scrambling.
5

Dashboard updates in real time

Their 136.17 kgCO2e is added to the running total immediately. The dashboard shows total tCO2e, breakdown by mode, monthly trends, and compliance status. Updated live throughout the year.

No waiting for year-end data collection. No spreadsheet version control. No "who has the latest file?" The report writes itself all year.
6

Report exported. One click.

When reporting season arrives, one click exports the full dataset. PDF formatted for SECR submission. Excel with every formula visible for auditor verification. Carbon Reduction Plan template pre-populated for PPN 06/21.

The report you'd normally spend three weeks building is already done. It's been building itself all year.
Calculation Methodology

The right formula every time.

Most tools use the wrong distance methodology for flights. CarbonTrack uses exactly what DEFRA specifies.

01

Haversine Great Circle: Flights

The only DEFRA-compliant method for calculating flight distances. Uses IATA airport coordinates to calculate the actual great-circle path. Not road distance. Not Google Maps.

DEFRA Specified
02

Google Maps Distance Matrix: Road and Rail

Actual road and rail route distances for cars, trains, taxis and ferries. Real routing, not straight-line estimates. Accounts for actual journey paths.

GHG Protocol Aligned
03

DEFRA 2025 Table 5: Emission Factors

15+ pre-loaded factors covering every business travel category. Applied automatically to 6 decimal places. Updated annually when DEFRA publishes new values.

DEFRA 2025 Current
04

Full Formula Trail: Every Trip

Distance × Emission Factor × Passengers = kgCO2e. Every component shown for every trip. Auditors can verify every number without calling you.

Audit Ready
Getting Started

Up and running today.

Start with a free report. No account needed. No commitment.

📧

Send your existing spreadsheet

Email seyi@usecarbontrack.co.uk with your travel data. Any format, any layout, however messy. Any format. Any layout. Even just a list of trips in a Word document works.

⚡

We process it within 24 hours

Your data is run through the CarbonTrack engine. Distances calculated. DEFRA factors applied. Audit trail generated. Full methodology documented.

📄

You receive a complete audit report

PDF and Excel. Total tCO2e. Breakdown by mode and category. Full formula trail. DEFRA source references. Formatted for SECR and PPN 06/21 submission. Free.

🚀

Decide whether to continue

If you see the value, join as a Founding Member at £150/month. Get the full platform and never deal with the manual process again. No pressure if not.

See it working on your data.

Send us your travel spreadsheet and we'll return a full DEFRA-aligned audit report within 24 hours. Free. No account needed.

Send your spreadsheet →

Or explore the full feature list