This free ESG score calculator gives a quick, transparent estimate of how an organisation performs on environmental, social and governance topics. It is built for sustainability consultants, students and small businesses who want a first baseline before a full ESG assessment or report.
ESG score calculator
Score each indicator from 0 to 100 using the maturity scale below, set your pillar weights, then calculate. Everything runs in your browser and nothing is sent anywhere.
Organisation
Pillar weights (%)
Environmental indicators
Social indicators
Governance indicators
Rating band:
Priority areas:
Maturity scale for scoring each indicator
| Score | Maturity level | What it looks like |
|---|---|---|
| 0 to 19 | Not addressed | No policy, owner or data for this topic. |
| 20 to 39 | Policy only | A written policy or commitment exists, but little is implemented or measured. |
| 40 to 59 | Implemented | Processes are in place and a named person is responsible, with some data collected. |
| 60 to 79 | Measured and managed | Clear targets, regular monitoring and year on year data reported to leadership. |
| 80 to 100 | Leading | Targets are met or externally verified, disclosure is public and performance beats peers. |
Rating bands
| Overall score | Band |
|---|---|
| 85 to 100 | Leader |
| 70 to 84 | Strong |
| 55 to 69 | Moderate |
| 40 to 54 | Emerging |
| 0 to 39 | Low maturity, high risk |
How the ESG score is calculated
Each pillar score is the average of its four indicators. The overall score is a weighted average of the three pillars, using the weights you enter. If your weights do not add up to 100%, the calculator scales them automatically. The three lowest scoring indicators are listed as priority areas, because improving weak areas usually raises the overall score fastest.
As an example, with the default weights of 40% environmental, 30% social and 30% governance, pillar scores of 57.5, 64 and 66 give an overall score of 62, which falls in the Moderate band.
Choosing the right weights
Weights should reflect what is material for the sector. A manufacturer or farm usually gives more weight to environmental topics, a service company may weight social topics higher, and a financial firm often puts extra weight on governance. A double materiality assessment, as used under the EU CSRD, is the most robust way to set them.
How to use your result
Use the score as an internal baseline, not an official rating. Repeat it each year with the same weights to track progress, share the summary with management, and turn the priority areas into targets. When you are ready to publish, our ESG report template helps you structure the disclosure, and the carbon accounting calculator gives you the emissions figures behind the environmental pillar.
Frequently asked questions
Is this the same as an MSCI or Sustainalytics rating?
No. Rating agencies use their own proprietary data and methods, so their scores are not directly comparable. This calculator is a self assessment tool that helps you understand strengths and gaps using a clear, open method.
What is a good ESG score?
On this scale, 70 or above is Strong and 85 or above is Leader. Most organisations starting out score between 40 and 60, which is normal and gives a clear improvement path.
Which indicators are included?
Twelve common indicators, four per pillar: emissions, energy, waste and biodiversity for environmental; health and safety, diversity, training and community for social; and board oversight, ethics, transparency and risk management for governance. They reflect topics found in GRI, ISSB and ESRS standards.
Is my data saved or shared?
No. All calculations run in your browser and nothing is stored or sent to a server. Download the CSV if you want to keep a record.
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