Equal outer ellipse dimensions with different inner openings.
Identical outside dimensions do not imply equal coated frame area. A smaller opening retains more face area and can change whole-container rounding.
Calculate two independent purchase scenarios
Prefilled values are illustrative. Replace measurements and product data on both sides. Quantities with different units or different products cannot be combined. Open a result in its calculator to save it to your material project.
A worked purchase comparison
For a 2 × 1 m outer ellipse, a concentric 1.6 × 0.6 m opening leaves approximately 0.817 m² face area. A 0.8 × 0.3 m opening leaves approximately 1.382 m². At an illustrative supplied coverage of 1 m²/L for one coat, 0.5 L containers require two and three containers respectively.
Use your measurements and selected products
Use chosen product coverage, supplied coat count and actual container volume. Shape, border size and appropriate finish are not chosen by these tools.
Concentric Elliptical Frame Coating Quantity Calculator
Keep the visible face of a supplied elliptical frame separate from its central opening before ordering coating.
Regular Polygon Inset Frame Coating Calculator
Measure a uniformly inset face border of a supplied regular polygon using its apothem and existing border width.
Alternating Radius Star Face Coating Calculator
Measure a supplied simple star face with evenly alternating outer and inner radii before calculating coating containers.
Capsule Shaped Inset Border Coating Calculator
Deduct a concentric inset capsule from an outer capsule face while retaining the straight section and curved ends.
Rounded Rectangle Inset Frame Coating Calculator
Measure a supplied rounded rectangle face border with a matching inset radius rather than subtracting unrelated rectangle areas.
Annular Arc Face Band Coating Calculator
Measure only a supplied curved annular face band, excluding separate radial or straight border strips.
What makes the comparison valid?
Only the explicitly measured face is coated in this model. Coat count and coverage are supplied, not recommendations. Star faces have non-crossing alternating-radius boundaries; irregular or self-crossing boundaries require another model.
Illustrative quantities above are not market prices or construction recommendations. Compare actual permitted scenarios independently and keep alternative orders separate.
Next steps
- Measure the job correctly
- Check the rounding assumptions
- See the complete work family
- Save and compare your calculated project scenarios
Reviewed 5 October 2026. Search demand has not been measured.