Every site’s carbon, worked out the same way, ready for your next audit.
Manually tracking fuel, electricity, and water use across projects makes carbon reporting slow and hard to do. FlexManager's Carbon and Greenhouse Gas Calculator applies the right emission factor automatically, so that every project gets a consistent, documented emissions total ready for compliance and ESG reporting.
You have multiple teams, all with various figures accounting for fuel, electricity, and water — but they’re disconnected. You want consistency and accuracy across sites, spreadsheets, and ready for the next eco-compliance audit. You need a module that can take all of these figures and apply the right emission factor automatically, turning them into a documented, project-level emissions total you can stand behind
A spreadsheet per site
Each site keeps its own copy, and the formulas drift a little further apart each quarter.
Factors nobody updates
Last year's factor sits in a cell that nobody remembers to change.
No trail behind the number
When the auditor asks where a figure came from, nobody can say who entered it.
From figure to total
An admin sets up the calculation lines and factors once; each assessment then works out one location's emissions for its reporting period.
Set up
Admins build each calculation line in a formula editor, built from the raw input, your emission factors, numbers and operators.
Open an assessment
Pick a location and reporting period; the assessment gets a reference number and every active calculation line.
Enter figures
Type each value, choose how it was gathered, add notes and documents; the line result and total update.
Submit and report
Submit to complete it; only completed assessments feed reports and, with KPI Statistics, your KPIs.
Key features & benefits
Simple Inputs, Automatic Calculation
Enter straightforward figures for fuel, electricity, and water, and the calculator applies the right emission factor for you, showing each input's emissions alongside a combined total.
Per-Project, Per-Period, Assessments
Run a separate assessment for every project and reporting period, so results stay organised by job and timeframe rather than blending into one running total.
Location-Adjusted Factors
Emission factors adjust automatically for the project's location, so results reflect where the work actually happened rather than one fixed national average.
Documented Methodology
Record how each figure was gathered, measured, or estimated, and add a note to explain anything that needs context, building a defensible trail behind every number.
Exportable Reports
Through Scheduled Reporting, you can schedule Excel summaries and per-location totals.
See Carbon and Greenhouse Gas Calculator in action.
Bring a real case to the demo. We will build it live.
Built for teams who have to answer for the numbers
From the person keying in the fuel figures to the director signing off the carbon report, everyone works from the same numbers.
Sustainability Manager
Sets each calculation line and factor once and, as module admin, can reopen, move or reassign an assessment.
Site Manager
Opens an assessment for their site and sees each result as figures go in.
Environmental Manager
Sees how each figure was gathered and who entered it, giving them the oversight they need for high-level meetings.
Operations Director
Sees every site's assessments in one list or on each location page and, can view reporting periods on a calendar.
Onboarding built around your needs. We're ready when you are.
We work to your pace and your team's availability. Your dedicated onboarding specialist takes care of the setup, so getting started stays simple.
Configuration
We configure FlexManager around your procedures.
Training
Short, role-based sessions for admins and field teams. Most users are confident after their first use.
Go Live!
Start with one site or roll out everywhere at once. Your account manager stays with you after launch.
Get started with Carbon and Greenhouse Gas Calculator
Frequently Asked Questions
What does FlexManager's Carbon and Greenhouse Gas Calculator do?
It calculates a project’s carbon emissions for a chosen reporting period, using simple inputs like fuel, electricity and water, then totals the result so you get one clear figure for that project and timeframe rather than a manual calculation.
Do I need to look up emission factors myself?
No. Emission factors are applied automatically once you enter your fuel, electricity or water figures, and they adjust for the project’s location, so you don’t need to source or calculate factors manually.
Can I track emissions separately for different projects?
Yes. A separate assessment can be run for each project and reporting period, keeping results organised by job and date range, and totals can be rolled up across multiple projects when you need a combined view.
How do I show where a figure came from?
Each figure can be recorded with how it was gathered, measured or estimated, and notes can be added to explain anything that needs context, giving you a documented trail behind every number in the report.
Can I choose how results are reported?
Yes. You can choose the units your results are reported in, so the output matches whatever format your internal reporting, a client, or a regulator expects.
Can I export the results for reporting or audits?
Yes. A detailed summary of each assessment can be exported, and every assessment carries an automatic reference number, making it straightforward to locate and evidence a specific calculation later.
How does this module relate to FlexManager's CSR module?
This calculator produces the underlying emissions figures for a project. FlexManager’s CSR module tracks the goals and actions built around sustainability commitments more broadly — this module is where the numbers behind those commitments actually come from.
Why choose FlexManager for carbon and greenhouse gas reporting?
FlexManager has been building practical compliance software since 2011, with hands-on HSEQ expertise behind every module we build. FlexManager is certified to ISO 9001, ISO 14001, ISO 27001 and ISO 45001 reinforcing our commitment to quality, environmental management, information security and occupational health and safety. For carbon and GHG reporting specifically, that means the calculator is shaped by people who understand environmental management systems from the inside, not just developers translating a spreadsheet into software.