🔢 Ordinal Number Converter
Professional bidirectional ordinal number converter that transforms integers into ordinal form and converts ordinal text back to numbers. Features smart auto-detection, multiple output formats, and comprehensive grammar rules for academic, legal, and professional writing applications.
Ordinal Conversion Results:
123 → 123rd (one hundred twenty-third)
Number to ordinal conversion with grammar analysis
🔢 Input Number
📊 Ordinal Result
🧮 Ordinal Grammar Analysis
📚 Related Ordinals
Previous -2
Previous -1
Current
Next +1
Next +2
💡 Ordinal Number Tips
Perfect for: Academic rankings, competition placements, sequential lists, legal document numbering, and any situation requiring ordinal position indicators.
Grammar Rules: Numbers ending in 1 use "st" (except 11th), ending in 2 use "nd" (except 12th), ending in 3 use "rd" (except 13th), all others use "th".
How to Use This Ordinal Number Converter
How to Use the Ordinal Number Converter:
- Enter your number or ordinal text in the input field (supports 123, 123rd, first, twenty-third)
- Choose the conversion direction (number to ordinal, ordinal to number, or both formats)
- Select your preferred output format (numeric, written, both, or detailed analysis)
- Click "Convert Ordinal" to generate the conversion with grammar analysis
- Review the result with ordinal rules, suffix explanations, and related examples
- Copy the ordinal result or download it for use in documents and applications
Pro Tips: The tool handles complex ordinals like twenty-first, one hundred twenty-third, and automatically applies correct grammar rules including special cases for 11th, 12th, and 13th. Perfect for academic rankings, legal documents, and sequential numbering!
How It Works
Ordinal Number Conversion Technology:
Our bidirectional ordinal converter uses advanced linguistic algorithms for accurate number-to-ordinal transformations:
- Smart Input Detection: Automatically identifies whether input is a cardinal number, numeric ordinal, or written ordinal text
- Grammar Rule Engine: Applies correct ordinal suffix rules (st, nd, rd, th) including special cases for 11th-13th
- Bidirectional Processing: Converts numbers to ordinals (123 → 123rd) and ordinals back to numbers (123rd → 123)
- Written Form Generation: Transforms numeric ordinals into written equivalents (1st → first, 21st → twenty-first)
- Linguistic Analysis: Provides grammar breakdowns, suffix explanations, and ordinal pattern recognition
- Context Examples: Generates related ordinals and usage examples for educational purposes
Educational Value: Perfect for teaching ordinal concepts, creating ranked lists, preparing legal documents, and any application requiring precise positional numbering with proper grammar and formatting.
When You Might Need This
- • Academic rankings and competition results - Convert student rankings, test scores, contest placements, and academic standings into proper ordinal form
- • Event scheduling and sequence planning - Number meeting agendas, procedural steps, presentation orders, and sequential event programming
- • Legal document preparation and clause numbering - Convert section numbers, subsection references, and procedural ordinals for contracts and legal filings
- • Educational materials and learning resources - Create worksheets, exercises, and teaching materials for ordinal number concepts and grammar rules
- • Sports tournament brackets and rankings - Convert seedings, round numbers, placement rankings, and competitive position indicators
- • Technical documentation and procedural guides - Number installation steps, troubleshooting procedures, and sequential instruction sets
- • Calendar and anniversary milestone calculations - Convert years, anniversaries, birthday numbers, and chronological milestone references
- • Statistical analysis and data presentation - Convert ranking data, percentile positions, and positional statistics for reports and presentations
- • Real estate listings and property descriptions - Convert floor numbers, unit sequences, apartment numbers, and building position indicators
- • Historical timeline creation and chronological sequencing - Convert period numbers, dynasty sequences, and historical event ordering for educational content
Frequently Asked Questions
What types of input does the ordinal number converter support?
The converter accepts three input types: cardinal numbers (123), numeric ordinals (123rd), and written ordinals (one hundred twenty-third). It automatically detects the input format and provides bidirectional conversion, making it versatile for both number-to-ordinal and ordinal-to-number transformations with comprehensive grammar analysis.
How does the converter handle special ordinal grammar rules like 11th, 12th, and 13th?
The converter includes advanced grammar logic for special cases. While most numbers ending in 1, 2, or 3 use 'st', 'nd', 'rd' respectively, the teens (11-13) are exceptions that use 'th'. The system correctly handles these edge cases: 11th (not 11st), 12th (not 12nd), 13th (not 13rd), ensuring grammatically accurate ordinal formation.
Can the tool convert written ordinals back to numbers?
Yes! The converter provides bidirectional functionality. You can input written ordinals like 'twenty-first', 'one hundred third', or 'first' and it will convert them back to their numeric equivalents (21st, 103rd, 1st) or cardinal numbers (21, 103, 1). This makes it perfect for processing both directions of ordinal conversion.
What output formats are available for ordinal conversion results?
The converter offers four output formats: Numeric only (1st, 2nd, 3rd), Written only (first, second, third), Both formats with grammar analysis, and Detailed with rules and examples. The detailed format includes suffix explanations, grammar rule breakdowns, and related ordinal examples for educational purposes.
Is this tool suitable for professional and academic applications?
Absolutely! The converter is designed for professional use including academic papers, legal documents, technical manuals, and formal writing. It follows standard English ordinal grammar rules, provides accurate formatting for various contexts, and includes educational features that make it valuable for teaching ordinal concepts and proper usage in professional documentation.