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Free Advanced Unit Converter

Get professional-grade unit conversion features that others charge for - completely FREE. 15-decimal precision, batch conversion, custom units, and advanced categories with no limitations.

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Advanced Features - All FREE

Professional-grade capabilities that beat paid alternatives. No hidden fees, no registration, no limitations.

🎯

15-Decimal Precision

Laboratory-grade accuracy for professional calculations. Most paid converters offer less precision.

  • Up to 15 decimal places
  • Scientific notation support
  • NIST-standard accuracy
  • Professional-grade calculations
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Advanced Categories

Access specialized unit categories that professionals need - all included free.

  • Scientific & Engineering units
  • Cooking & Recipe conversions
  • Historical & Ancient units
  • Programming & Data units

Batch Processing

Convert hundreds of values at once with professional CSV export capabilities.

  • Bulk conversion processing
  • CSV import/export
  • Batch validation
  • Professional workflows
⚙️

Custom Units

Build and save your own unit definitions for specialized industry needs.

  • Custom unit builder
  • Save & share definitions
  • Industry-specific units
  • Mathematical relationships
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Privacy & Offline

Complete privacy protection with full offline functionality. No data tracking.

  • No registration required
  • No data tracking
  • Works completely offline
  • PWA installation
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Professional Interface

Clean, fast, and accessible design optimized for professional use.

  • Responsive design
  • Keyboard shortcuts
  • Accessibility features
  • Mobile optimized

Ready to Experience Professional Unit Conversion?

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