Circle Symbols Collection | Dot·Diameter·Colored Circles·Geometric Circles

Circle symbols are among the most frequently used geometric symbols, widely applied in list markers, flowchart nodes, data visualization, engineering drawing, and UI design. This page features 41 symbols in the circle series, categorized into basic circles, dot symbols, diameter/radius symbols, half/quarter circles, bullseye/fisheye, colored circle emojis, geometric circles. Each symbol includes Unicode, HTML entity, supports one-click copy and PNG download for use in various scenarios.

● Basic Circle Symbols

● (Black Circle) Called black circle or solid circle, Unicode is U+25CF, HTML entity is ●. It's the most commonly used dot symbol, widely used for list markers, nodes in flowcharts, or emphasis points.○ (White Circle) Unicode is U+25CB, HTML entity ○, often used as the unchecked state of radio buttons or placeholder circles.

⬤ (Black Large Circle) Called black large circle, Unicode is U+2B24, HTML entity ⬤. Larger in size with prominent visual effect, suitable for important markers or decorative elements before titles.⚫ (Medium Black Circle) Unicode is U+26AB, HTML entity ⚫, size介于 between large and small.⚪ (Medium White Circle) Unicode is U+26AA, HTML entity ⚪, medium-sized white circle.◯ (Large Circle) Unicode is U+25EF, HTML entity ◯, larger than ordinary white circle, often used to indicate area or range.

• Dot Symbols

• (Bullet Point) Called bullet point or dot, Unicode is U+2022, HTML entity • or •, the most common list marker symbol.◦ (White Bullet) Unicode is U+25E6, HTML entity ◦, often used for secondary lists.⚬ (Middle Dot) Unicode is U+26AC, HTML entity ⚬, a centered small dot.

⌀ Diameter and Radius Symbols

⌀ (Diameter Sign) Called diameter sign, Unicode is U+2300, HTML entity ⌀, used in engineering drawing and mathematics to denote the diameter of a circle.∅ (Empty Set Symbol) Unicode is U+2205, HTML entity ∅, denotes empty set, visually similar but different from diameter sign.Ø (Slash O) Unicode is U+00D8, a Latin letter, commonly used in Nordic languages, also borrowed as diameter symbol.ø (Slash o) Unicode is U+00F8, lowercase diameter variant.

⊙ Circle with Dot Symbols

⊙ (Circle with Dot) Called circle with dot or odot, Unicode is U+2299, HTML entity ⊙, represents tensor product or dot operation in mathematics.◎ (Bullseye) Unicode is U+25CE, HTML entity ◎, resembles a target center, often used to indicate center point or selected state.◉ (Fisheye) Unicode is U+25C9, HTML entity ◉, a circle with a black dot in the center.

◐ Half Circle and Quarter Circle Symbols

◐ (Left Half Black Circle) U+25D0, ◑ (Right Half Black Circle) U+25D1, ◒ (Top Half Black Circle) U+25D2, ◓ (Bottom Half Black Circle) U+25D3. These are half-black half-white circle symbols, can be used to indicate half progress or yin-yang concepts.◔ (Upper Right Quadrant Black Circle) U+25D4, ◕ (Upper Left Quadrant Black Circle) U+25D5, quarter-filled circles.

◜ (Upper Left Quarter Circle) U+25DC, ◝ (Upper Right Quarter Circle) U+25DD, ◞ (Lower Left Quarter Circle) U+25DE, ◟ (Lower Right Quarter Circle) U+25DF, quarter arc symbols in four directions.◠ (Upper Half Circle) U+25E0, ◡ (Lower Half Circle) U+25E1, half arc symbols.

🔴 Colored Circle Emoji Symbols

🔴 (Red Circle) Called red circle button, Unicode is U+1F534, HTML entity 🔴, the most commonly used colored circle symbol, widely used in status indicators, traffic light simulation, or categorical markers in data visualization.🟠 (Orange Circle) Unicode is U+1F7E0, HTML entity 🌠, orange circle symbol.🟡 (Yellow Circle) Unicode is U+1F7E1, HTML entity 🌡, yellow circle symbol.

🟢 (Green Circle) Unicode is U+1F7E2, HTML entity 🌢, often used to indicate success, pass, or on state.🔵 (Blue Circle) Unicode is U+1F535, HTML entity 🔵, blue circle symbol.🟣 (Purple Circle) Unicode is U+1F7E3, HTML entity 🌣, purple circle symbol.🟤 (Brown Circle) Unicode is U+1F7E4, HTML entity 🌤, brown circle symbol.🔘 (Radio Button) Unicode is U+1F518, HTML entity 🔘, a shaded circular button symbol, often used for radio controls in UI design.⏺ (Record Button) Unicode is U+23FA, HTML entity ⏺, red solid circle, often used to indicate recording state.

◴ Geometric Circle Supplementary Symbols

◴ (Upper Right Quarter Hollow Circle) Called upper right quarter hollow circle, Unicode is U+25F4, HTML entity ◴, white quarter sector, often used with ◵◶◷ to create circular progress indicators.◵ (Lower Right Quarter Hollow Circle) Unicode is U+25F5, HTML entity ◵, lower right quarter hollow circle.◶ (Lower Left Quarter Hollow Circle) Unicode is U+25F6, HTML entity ◶, lower left quarter hollow circle.◷ (Upper Left Quarter Hollow Circle) Unicode is U+25F7, HTML entity ◷, upper left quarter hollow circle. These four symbols can be combined to create complete circular progress or pie charts.

💡 Usage Scenarios and Input Methods

Common usage scenarios for circle symbols: 1) Frontend development, ● and ○ are often used as radio buttons or status indicators, 🔴🟢 for online status display. 2) Engineering drawing, ⌀ diameter symbol is used for hole size标注. 3) Data visualization, colored circle emojis represent categorical data. 4) Flowcharts, circles often represent start/end nodes. 5) List formatting, • bullet point is the most commonly used list marker.

Input methods: Windows users can use Alt key plus number code input, e.g., ● press Alt+9679, ○ press Alt+9675, ⌀ press Alt+8960. Colored emojis can be accessed via Win+. and search for "red circle", etc. macOS can search for "circle" or "diameter" via Character Viewer. In HTML, numeric entities are recommended for cross-platform compatibility. In LaTeX, \circ outputs ○, \bullet outputs ●, \odot outputs ⊙, \bigcirc outputs ◯.