Dev tools · alternatives · 2026

24 alternatives to Threeares

GHG Calculator, Carbon Emission, Road Construction

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Threeares launched in 2022; newer entries below may have overtaken it.

1. 1
   Carbon Neutral Website▲107

   Calculate and optimize web page carbon footprint

   2023 · carbonneutralwebsite.org · its alternatives →

2. 2
   Website Carbon Calculator▲105

   Find out the how much CO2 your website emits

   2019 · websitecarbon.com · its alternatives →

3. 3
   Trip to Carbon▲144

   A carbon footprint calculation API for travel.

   2019 · triptocarbon.com · its alternatives →

4. 4
   CarbonSutra▲70

   API for estimating carbon emissions of organizations

   2023 · carbonsutra.com · its alternatives →

5. 5
   Jules▲219

   Offset your carbon footprint entirely

   2022 · meetjules.com · its alternatives →

6. 6
   Aerial▲405

   Climate action, in your hands.

   2020 · apps.apple.com · its alternatives →

7. 7
   Carbon Visualiser▲81

   See your CO2 in burgers, basketballs, pufferfish and more

   2019 · its alternatives →

8. 8
   Travel CO₂▲73

   Calculate, visualize and integrate CO₂ emissions from travel

   2022 · travelco2.com · its alternatives →

9. 9
   Crypto Carbon Footprint Calculator▲115

   Calculate & offset emissions from your cryptocurrencies

   2021 · its alternatives →

10. 10
    YAYZY▲135

    Track the carbon footprint of each purchase in real-time

    2020 · yayzy.com · its alternatives →

11. 11
    Carbon Ledger▲94

    Measure the carbon footprint of transaction data

    2021 · carboninterface.com · its alternatives →

12. 12
    Image Carbon▲87

    Carbon calculator for website images

    2023 · imagecarbon.com · its alternatives →

13. 13
    Reduce.▲98

    Automatically track, reduce, & offset your carbon footprint.

    2019 · reduceapp.com · its alternatives →

14. 14
    Carbon Interface 1.0▲115

    Measure carbon emissions with an API

    2020 · carboninterface.com · its alternatives →

15. 15ME
    Mission Emission – Calculate the emissions a vehicle produces▲81

    2018 · missionemission.co · its alternatives →

16. 16
    offCents▲82

    Travel with zero carbon emissions

    2018 · its alternatives →

17. 17
    Climatiq Emission Tracking API▲182

    Convert activity data into carbon metrics, automatically

    2022 · climatiq.io · its alternatives →

18. 18
    Carbon Calc▲11

    Easily calculate and track your carbon footprint

    2024 · carbon-mauve-eight.vercel.app · its alternatives →

19. 19
    VYVE▲100

    Easily understand, track and reduce your carbon footprint.

    2020 · apps.apple.com · its alternatives →

20. 20
    Greenr▲125

    Track, reduce, compete and offset your carbon footprint

    2021 · its alternatives →

21. 21
    Bend▲130

    1 click carbon accounting for startups

    2022 · its alternatives →

22. 22
    WebCarbon Calculator - digital footprint▲5

    Check your CO2 impact by your digital streaming behavior

    2019 · its alternatives →

23. 23CY
    Calculate Your Private Jet's Carbon Footprint▲8

    Estimate the carbon emissions of your private jet travel with our easy-to-use calculator. Get accurate CO2e calculations based on flight hours or distance.

    2025 · privatejetcalculator.com · its alternatives →

24. 24
    Klimaat▲7

    An API to calculate the carbon footprint of any journey

    2022 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →