El primer plano, el plano 0, es el Plano Básico Multilingüe que contiene caracteres para casi todos los idiomas modernos, y un gran número de símbolos. Muchos de los puntos de código asignados en el Plano Básico Multilingüe son para representar caracteres chinos, japoneses y coreanos.

65,472 de los 65,536 puntos de código en este plano han sido asignados a un bloque de Unicode, solo dejando 64 puntos de código sin asignar.

Actualmente, el Plano Básico Multilingüe tiene los siguientes 163 bloques:

• Basic Latin (0000–007F)
• Latin-1 Supplement (0080–00FF)
• Latin Extended-A (0100–017F)
• Latin Extended-B (0180–024F)
• IPA Extensions (0250–02AF)
• Spacing Modifier Letters (02B0–02FF)
• Combining Diacritical Marks (0300–036F)
• Greek and Coptic (0370–03FF)
• Cyrillic (0400–04FF)
• Cyrillic Supplement (0500–052F)
• Armenian (0530–058F)
• Hebrew (0590–05FF)
• Arabic (0600–06FF)
• Syriac (0700–074F)
• Arabic Supplement (0750–077F)
• Thaana (0780–07BF)
• N'Ko (07C0–07FF)
• Samaritan (0800–083F)
• Mandaic (0840–085F)
• Syriac Supplement (0860–086F)
• Arabic Extended-A (08A0–08FF)
• Devanagari (0900–097F)
• Bengali (0980–09FF)
• Gurmukhi (0A00–0A7F)
• Gujarati (0A80–0AFF)
• Oriya (0B00–0B7F)
• Tamil (0B80–0BFF)
• Telugu (0C00–0C7F)
• Kannada (0C80–0CFF)
• Malayalam (0D00–0D7F)
• Sinhala (0D80–0DFF)
• Thai (0E00–0E7F)
• Lao (0E80–0EFF)
• Tibetan (0F00–0FFF)
• Myanmar (1000–109F)
• Georgian (10A0–10FF)
• Hangul Jamo (1100–11FF)
• Ethiopic (1200–137F)
• Ethiopic Supplement (1380–139F)
• Cherokee (13A0–13FF)
• Unified Canadian Aboriginal Syllabics (1400–167F)
• Ogham (1680–169F)
• Runic (16A0–16FF)
• Tagalog (1700–171F)
• Hanunoo (1720–173F)
• Buhid (1740–175F)
• Tagbanwa (1760–177F)
• Khmer (1780–17FF)
• Mongolian (1800–18AF)
• Unified Canadian Aboriginal Syllabics Extended (18B0–18FF)
• Limbu (1900–194F)
• Tai Le (1950–197F)
• New Tai Lue (1980–19DF)
• Khmer Symbols (19E0–19FF)
• Buginese (1A00–1A1F)
• Tai Tham (1A20–1AAF)
• Combining Diacritical Marks Extended (1AB0–1AFF)
• Balinese (1B00–1B7F)
• Sundanese (1B80–1BBF)
• Batak (1BC0–1BFF)
• Lepcha (1C00–1C4F)
• Ol Chiki (1C50–1C7F)
• Cyrillic Extended-C (1C80–1C8F)
• Georgian Extended (1C90–1CBF)
• Sundanese Supplement (1CC0–1CCF)
• Vedic Extensions (1CD0–1CFF)
• Phonetic Extensions (1D00–1D7F)
• Phonetic Extensions Supplement (1D80–1DBF)
• Combining Diacritical Marks Supplement (1DC0–1DFF)
• Latin Extended Additional (1E00–1EFF)
• Greek Extended (1F00–1FFF)
• General Punctuation (2000–206F)
• Superscripts and Subscripts (2070–209F)
• Currency Symbols (20A0–20CF)
• Combining Diacritical Marks for Symbols (20D0–20FF)
• Letterlike Symbols (2100–214F)
• Number Forms (2150–218F)
• Arrows (2190–21FF)
• Mathematical Operators (2200–22FF)
• Miscellaneous Technical (2300–23FF)
• Control Pictures (2400–243F)
• Optical Character Recognition (2440–245F)
• Enclosed Alphanumerics (2460–24FF)
• Box Drawing (2500–257F)
• Block Elements (2580–259F)
• Geometric Shapes (25A0–25FF)
• Miscellaneous Symbols (2600–26FF)
• Dingbats (2700–27BF)
• Miscellaneous Mathematical Symbols-A (27C0–27EF)
• Supplemental Arrows-A (27F0–27FF)
• Braille Patterns (2800–28FF)
• Supplemental Arrows-B (2900–297F)
• Miscellaneous Mathematical Symbols-B (2980–29FF)
• Supplemental Mathematical Operators (2A00–2AFF)
• Miscellaneous Symbols and Arrows (2B00–2BFF)
• Glagolitic (2C00–2C5F)
• Latin Extended-C (2C60–2C7F)
• Coptic (2C80–2CFF)
• Georgian Supplement (2D00–2D2F)
• Tifinagh (2D30–2D7F)
• Ethiopic Extended (2D80–2DDF)
• Cyrillic Extended-A (2DE0–2DFF)
• Supplemental Punctuation (2E00–2E7F)
• CJK Radicals Supplement (2E80–2EFF)
• Kangxi Radicals (2F00–2FDF)
• Ideographic Description Characters (2FF0–2FFF)
• CJK Symbols and Punctuation (3000–303F)
• Hiragana (3040–309F)
• Katakana (30A0–30FF)
• Bopomofo (3100–312F)
• Hangul Compatibility Jamo (3130–318F)
• Kanbun (3190–319F)
• Bopomofo Extended (31A0–31BF)
• CJK Strokes (31C0–31EF)
• Katakana Phonetic Extensions (31F0–31FF)
• Enclosed CJK Letters and Months (3200–32FF)
• CJK Compatibility (3300–33FF)
• CJK Unified Ideographs Extension A (3400–4DBF)
• Yijing Hexagram Symbols (4DC0–4DFF)
• CJK Unified Ideographs (4E00–9FFF)
• Yi Syllables (A000–A48F)
• Yi Radicals (A490–A4CF)
• Lisu (A4D0–A4FF)
• Vai (A500–A63F)
• Cyrillic Extended-B (A640–A69F)
• Bamum (A6A0–A6FF)
• Modifier Tone Letters (A700–A71F)
• Latin Extended-D (A720–A7FF)
• Syloti Nagri (A800–A82F)
• Common Indic Number Forms (A830–A83F)
• Phags-pa (A840–A87F)
• Saurashtra (A880–A8DF)
• Devanagari Extended (A8E0–A8FF)
• Kayah Li (A900–A92F)
• Rejang (A930–A95F)
• Hangul Jamo Extended-A (A960–A97F)
• Javanese (A980–A9DF)
• Myanmar Extended-B (A9E0–A9FF)
• Cham (AA00–AA5F)
• Myanmar Extended-A (AA60–AA7F)
• Tai Viet (AA80–AADF)
• Meetei Mayek Extensions (AAE0–AAFF)
• Ethiopic Extended-A (AB00–AB2F)
• Latin Extended-E (AB30–AB6F)
• Cherokee Supplement (AB70–ABBF)
• Meetei Mayek (ABC0–ABFF)
• Hangul Syllables (AC00–D7AF)
• Hangul Jamo Extended-B (D7B0–D7FF)
• High Surrogates (D800–DB7F)
• High Private Use Surrogates (DB80–DBFF)
• Low Surrogates (DC00–DFFF)
• Private Use Area (E000–F8FF)
• CJK Compatibility Ideographs (F900–FAFF)
• Alphabetic Presentation Forms (FB00–FB4F)
• Arabic Presentation Forms-A (FB50–FDFF)
• Variation Selectors (FE00–FE0F)
• Vertical Forms (FE10–FE1F)
• Combining Half Marks (FE20–FE2F)
• CJK Compatibility Forms (FE30–FE4F)
• Small Form Variants (FE50–FE6F)
• Arabic Presentation Forms-B (FE70–FEFF)
• Halfwidth and Fullwidth Forms (FF00–FFEF)
• Specials (FFF0–FFFF)