Our Conversion Technology
UnitConvert uses advanced JavaScript-based algorithms combined with internationally recognized conversion factors to deliver instant, accurate results. Our system is built on three core principles: precision, speed, and reliability.
Real-Time Processing
As you type, our converter instantly calculates results using optimized algorithms that run directly in your browser—no server delays.
High Precision
We maintain up to 10 decimal places of precision using double-precision floating-point arithmetic for the most accurate results.
Verified Factors
All conversion factors are sourced from authoritative bodies like NIST, ISO, and international standards organizations.
The Conversion Process
When you use our converter, here's what happens behind the scenes:
1. Input Validation
Your input is validated in real-time to ensure it's a valid number. We support standard notation, scientific notation (e.g., 1e6), and various decimal formats to accommodate international users.
2. Base Unit Conversion
Each category has a "base unit" (e.g., meters for length, kilograms for weight). Your input is first converted to this base unit using precise conversion factors. This ensures consistency across all conversions.
3. Target Unit Calculation
The base value is then converted to your desired target unit. This two-step process eliminates compounding errors and ensures maximum accuracy regardless of the conversion path.
4. Result Formatting
Results are intelligently formatted for readability. Very large or very small numbers are displayed in scientific notation, while common values use standard decimal notation with appropriate precision.
Accuracy & Precision
We take accuracy seriously. All conversion factors are reviewed and updated regularly to reflect the latest international standards. For scientific and engineering applications, we maintain precision levels that exceed typical requirements:
- Length: Accurate to within 0.0000001%
- Weight: Precise to 10 significant figures
- Temperature: Exact formula-based conversions
- Volume: Based on official SI definitions
- Speed: Calculated using exact time and distance ratios
Client-Side Processing
UnitConvert runs entirely in your browser. This means:
- No data is sent to our servers
- Instant results with zero network latency
- Works offline after initial page load
- Complete privacy—your conversions stay on your device
Supported Units
Our converters support over 100 different units across multiple categories. Each unit is carefully implemented with exact conversion factors, alternate names, and common abbreviations to make finding the right unit as easy as possible.