TreeCalc Login

When you log in to treecalc.com, our server has to register you and store a cookie on your device.
Since your privacy is important to us, we wish to inform you about our cookie policy.
Our server generates a cookie consisting of maximum 128 characters. We are not able to decipher the content of the cookie, nor do we use it (retargeting) or pass it on to any third party.
Treecalc.com also uses the local storage of your browser to save data tables setup.
Since the the new European GDPR (General Data Protection Regulation) took effect in May 2018, we also have to store the statement of your consent if you have agreed to store a cookie from our server on your device.

If you refuse to store a cookie or the use of your local storage on your device, we cannot allow you to log in to treecalc.com.
If your system deletes the treecalc.com cookie, you will be asked again to store it the next time that you proceed to log in to treecalc.com.


  • The use of this software will incur fees.
  • By using this software you are accepting personal reponsibility for the details that you supply and for the results that arise from them.
  • ArboSafe disclaims all liability for any damage occuring from a miscalculation of the tree's safety status.
Do you agree with the Terms of use?


  • For Android users we recommend to use Google Chrome browser
  • Internet Explorer occasionally distorts pictures being uploaded to the web server. Therefore we recommend to choose Win Edge, Chrome, Mozilla, Safari, opera or other browsers.
  • We recommend to have a PDF reading software (e.g. Adobe Reader) installed in order to be able to open the reports


If you wish to use TreeCalc, you will first need to register as a user. After registering, you will receive an email containing a link, usually highlighted in blue. By clicking on this link, you will be able to complete the registration process and set up your account.
You can switch the language to German at any time by clicking on the button marked “German” in the upper right-hand corner of the screen.

Important information:

Fields with a red asterisk
- All fields that are marked with a red asterisk must be filled in.

Enter full information when registering
-The personal information that you enter when registering will appear on report printouts and on the automatically generated invoices. If, for example, you enter your first name only as an abbreviation or an initial, this is what will appear on the printed report and on your invoice. You can edit or add to your personal details at any time by simply clicking on your profile and selecting “Settings”.

-Your password must consist of at least 4 characters. You can change it any time you wish by clicking on your profile and selecting “Settings”.

Euro VAT number:
-If you are purchasing Calcs on behalf of a company that is located in an EU country and has a valid euro VAT number, then you must enter this. The information will be checked against the database residing on the EU’s central server (in rare cases this can take some time). Our invoices to you will then contain no VAT. If your company is located outside the EU, our invoices will include German VAT. Depending on the taxation laws in your country of residence, it may be possible to reclaim the VAT from your tax authority.

If you choose the education user profile your data will not be used for scientific statistical evaluation.
Hint: all statistical evaluations are carried out without any connection to personal user data.

Please note:
Once you have accepted our terms and conditions of use, the registration process is complete. At this stage, you will not yet have created an account with which to purchase Calcs.
After you have fully completed the registration process, you will receive an email from our TreeCalcRobot containing a highlighted link. Please click on the link to activate your account. You will then be able to purchase Calcs and use the application.

If you haven’t received an email from the TreeCalcRobot at this point, please check your SPAM folder.You can also login using the same e-mail address as used during registration. In this case you can request activation link resending. Please confirm the activation of your account with a click on that link.