A simple, fully offline calculator for epoxy and casting resin. Work out how much resin a piece needs, then split it by your A:B mix ratio — by volume or by weight.
Frequently asked questions
Does it work offline?
Yes. The app runs 100% on your device. No internet, no account, no sign-up.
What's the difference between "by volume" and "by weight"?
Resin mix ratios can be given either by volume (e.g. measuring with cups) or by weight (e.g. on a scale). They are not interchangeable. The app always labels which one a result uses, so you don't accidentally mix the wrong way. Always check what your resin's label specifies.
How does it estimate weight?
Weight is estimated from volume using a density value (default 1.1 g/cm³, which is typical for epoxy). You can adjust the density in Settings to match your specific product.
Which shapes can it calculate?
Box, cylinder, dome, surface coating, and direct volume entry, with optional waste allowance and metric or imperial units.
Are the results exact?
They're estimates to help you plan. Always follow the mixing instructions printed on your resin's packaging.
Contact us
Need help or have a suggestion? Email lingjihelp+resin_support@gmail.com and we'll get back to you, usually within a couple of days.
Privacy
The app collects no data. Read the full Privacy Policy.