Raw volume
--Circle Geometry
Epoxy Circle Calculator
Use this page when the shape is a circle and the only dimensions that matter are diameter and depth. It is a cleaner fit than forcing a round project through a rectangular calculator.
Calculator
Plan the project in one pass
Circle pour estimate
--
Start with the inputs to generate an order-ready estimate.
Part A / Part B
--Projected cost
--Layer guidance
--Why This Estimate Changed
What moved the number
- Enter the form values to see raw volume, buffer, and recommendation.
Compare Scenarios
Circle volume vs conservative order
Standard
--Conservative
--Product fit
--Next Step
Match the result to the right resin class
Use the estimate to narrow the resin class first. Then confirm product limits, cure behavior, and measurement assumptions before you make a buying decision.
Why this page exists
- Built for round molds, round tabletops, coasters, and circular fills.
- Uses diameter and depth instead of length and width.
- Shows raw circular volume, waste-adjusted order quantity, and cost.
- Links to round table and coaster pages when the project needs more specific guidance.
How to measure or set the inputs
- Measure the inside diameter of the resin area.
- Enter the final filled depth, not the mold height if the mold will not be filled completely.
- Use a higher buffer for uneven rims, porous wood, or decorative inclusions.
- For many identical circles, calculate one piece first and multiply the recommended amount externally.
Common mistakes that cost money
- Using radius instead of diameter.
- Entering outside mold diameter instead of the inside cavity.
- Forgetting that shallow coasters and deep round casts need different resin classes.
Project checklist before you buy
- Confirm the mold or surface is sealed before mixing resin.
- Measure depth twice at the deepest point of the project.
- Add extra material for waste, seepage, and edge soak-in.
- Confirm the resin type matches the intended pour depth.
- Prepare cups, stir sticks, gloves, and a level work surface.
FAQ
Questions people ask before buying epoxy
Should I enter radius or diameter?
Enter diameter. The calculator divides it internally to apply the circle volume formula.
Can this estimate coasters?
Yes for one round coaster. Use the coaster calculator if you want craft-specific batching and waste guidance.
What if my mold is oval?
Use this only for true circles. For oval or irregular shapes, break the project into segments or use a more conservative estimate.
How accurate is this epoxy calculator?
It is designed for planning and procurement, not for replacing the manufacturer data sheet. The calculator is most useful when you add the right waste buffer and choose the page that matches your project type.
Why does the recommended amount exceed the raw volume?
Real projects lose material to mixing cups, edge soak-in, seepage, and safety margin. Raw volume alone is often too optimistic.
Should I still check the resin brand instructions?
Yes. Always confirm maximum pour depth, cure conditions, and mix ratio with the product documentation you plan to buy.
Related Pages
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Open pageEpoxy Unit Converter
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Open page