Open Source Utility
Free Digital Tools & Calculators
We build enterprise-grade logic for our clients and ourselves. This is our public repository of free calculators, utilities, and web apps engineered to automate complex math and data decisions.
Health & Wellness
Macronutrient Engine
Currently in development. Will feature complex logic for dynamic meal planning based on specific metabolic outputs.
Coming Soon
More Categories
Coming Soon
Common Inquiries
Answers & Clarity
Why does 12 Crowns offer these tools for free? ▼
We build these calculators and web apps initially for our own internal operations or as proof-of-concept architectures. Releasing them to the public allows us to demonstrate our engineering capabilities while providing genuine value to our community.
Are these calculators accurate? ▼
Yes. Our calculators are programmed with strict mathematical logic and industry-standard variables to ensure enterprise-grade accuracy, whether you are calculating complex IUL finance structures or raw material costs for DIY projects.
Can 12 Crowns build a custom calculator for my business? ▼
Absolutely. Custom calculators are one of the highest-converting lead generation tools a business can deploy. We can architect bespoke calculators that capture data, provide immediate value to your prospect, and route the lead directly into your GoHighLevel CRM.
