Formatting Utilities

Format Number

Format Number converts numeric values into locale-specific strings with proper thousand separators and decimal marks. Use via MCP in Cursor or Windsurf, or call GET /v1/format/number directly. Pass 1234567.89 with locale "en-US" to get "1,234,567.89" — essential for displaying financial data or user-facing numbers correctly across different regions.

API Endpoint

GET /v1/format/number

Code Examples

curl "https://tinyfn.io/v1/format/number" \
  -H "X-API-Key: YOUR_API_KEY"

const response = await fetch('https://tinyfn.io/v1/format/number', {
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);

import requests

response = requests.get('https://tinyfn.io/v1/format/number',
    headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)

Use via MCP

Add to your AI agent

Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's formatting tools:

{
  "mcpServers": {
    "tinyfn-format": {
      "url": "https://tinyfn.io/mcp/format",
      "headers": {
        "X-API-Key": "YOUR_API_KEY"
      }
    }
  }
}

Learn more about MCP setup →

Related Tools

FAQ

How do I format numbers for different countries using MCP?

Specify the locale parameter like 'de-DE' for German formatting (1.234.567,89) or 'fr-FR' for French (1 234 567,89). The tool handles decimal separators, thousand separators, and grouping automatically.

What number formats and locales are supported?

Supports all standard BCP 47 locale codes (en-US, ja-JP, ar-SA, etc.) and handles integers, floats, and scientific notation. Returns properly formatted strings with locale-appropriate separators.

Can I control decimal places in formatted output?

Yes, use the minimumFractionDigits and maximumFractionDigits parameters to control precision. Set both to 2 for consistent currency formatting like '$1,234.00'.

Does this work with very large numbers or edge cases?

Handles numbers up to JavaScript's MAX_SAFE_INTEGER limit and properly formats negative numbers, zero, and scientific notation according to locale rules.

What's the difference between this and basic string formatting?

This provides true locale-aware formatting with proper cultural conventions, unlike simple string manipulation. Critical for international applications where '1,234.56' vs '1.234,56' matters.

Try Format Number Now

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