Terms of Service

Last updated 4 October 2026

These terms cover your use of gtcalc (gtcalc.app), a free calculator for planning GregTech production lines in Minecraft modpacks. By using gtcalc you agree to them. If you don't agree, please don't use the site.

1. The service

gtcalc is provided free, as it is. We try to make the calculations right, but recipes, ratios and power figures can be wrong or out of date, and modpacks change. Check important builds in your game. We may change, pause or stop any part of gtcalc at any time.

2. Accounts

• You don't need an account to use the calculator. You need one to save flows to the cloud and to share, comment, vote or favourite.
• Keep your sign-in details safe. You're responsible for what happens under your account.
• Usernames must not be offensive, impersonate someone, or pretend to be staff. We may rename or refuse usernames that break this.
• You must be at least 13 to make an account.

3. Your content

Flows, descriptions, schematic files and comments you create stay yours. When you share something to Community, you give gtcalc a free, worldwide licence to store, show and distribute it as part of the service. You also let other users view it, make their own copies, change those copies and download it. You can delete what you've shared at any time; copies other people have already made may remain.

Only share content you have the right to share.

4. Rules

Don't use gtcalc to:

• post anything illegal, hateful, harassing, sexual, violent or otherwise offensive;
• spam, advertise, or post misleading content;
• share other people's personal information;
• break or overload the site, get around its limits or security, or access data that isn't yours;
• scrape or copy Community content in bulk.

Moderators can remove content, rename usernames, and suspend or delete accounts that break these rules. Use the Report button to flag anything that does.

5. Game names and textures

Minecraft, GregTech, GTCEu and the modpacks gtcalc supports belong to their owners. Machine and item names and textures shown in the app are theirs and are used only to make the tool recognisable. gtcalc is a fan-made project and isn't affiliated with or endorsed by Mojang, Microsoft or the GregTech developers.

6. Privacy

How we handle your data is explained in the Privacy Policy.

7. Liability

As far as the law allows, gtcalc is provided without warranties of any kind. We aren't liable for any loss arising from using it, including lost game progress, lost flows, or decisions based on its numbers. Nothing in these terms limits liability that can't be limited by law.

8. Changes

We may update these terms. We'll change the date at the top, and for significant changes we'll tell you in the app. If you keep using gtcalc after a change, the new terms apply.

9. Law

These terms are governed by the laws of England and Wales. If you live elsewhere in the UK or EU, you keep the protections of your local consumer law.

10. Contact

Email privacy@gtcalc.app with questions about these terms.