Support
Contact The Stack Matrix
For help with our calculators, kits, account access, or product purchases, email our support address.
Email support
To help us understand an issue, include the product or page involved and the steps you took. Please do not email passwords, payment-card details, or confidential business information.
Privacy and account-data requests
See our Privacy Policy for information about data handling, or visit Data Deletion for instructions on requesting deletion of account or workspace information.