Universal Unit Converter
Fast, accurate bidirectional unit converter across 11 measurement categories.
- Runs in your browser
- Free, no signup
Quick Equivalent Values
Standard Measurement Systems & Conversion Rules
Decimal vs. Binary Data Storage
Disk manufacturers measure storage in decimal units (1 KB = 1,000 Bytes, 1 GB = 10⁹ Bytes), while operating systems often measure memory in binary IEC kibibytes (1 KiB = 1,024 Bytes, 1 GiB = 2³⁰ Bytes). ToolDuck clearly distinguishes both standards so you get exact numbers.
Non-Linear Temperature Scales
Unlike length or mass, temperature scales do not share a common zero point. ToolDuck calculates temperatures using exact thermodynamic formulas: °F = (°C × 9/5) + 32 and K = °C + 273.15, enforcing physical limits at absolute zero (0 K).
Metric & Imperial Precision
All conversions use official international standards (e.g. 1 inch = 0.0254 m exactly, 1 lb = 0.45359237 kg exactly). Floating-point rounding artefacts are automatically eliminated for clean display.
All unit conversions are processed in your browser. No numeric values or conversion queries are sent to our server.
Converting measurements accurately requires precise conversion factors and formulas. Simple linear multiplication works for lengths and weights, but temperature requires exact offset formulas, and digital data storage requires strict distinction between decimal (KB, MB, GB) and binary (KiB, MiB, GiB) standards.
This universal unit converter provides instant, bidirectional conversion across 11 major categories with live updates, quick swap actions, customizable decimal precision, and reference conversion tables.
How to use this tool
- Select your measurement category from the navigation bar (e.g., Length, Mass, Temperature, or Data Storage).
- Choose your "From" unit and "To" unit from the searchable dropdowns.
- Type the value you want to convert. The converted result and step-by-step formula update immediately.
- Use the "Swap Units" button to invert the conversion direction, or adjust the precision slider to format decimal places.
Decimal vs Binary Data Units (MB vs MiB)
Storage drive manufacturers (hard disks, SSDs) measure capacity in decimal units based on powers of 10: 1 Kilobyte (KB) = 1,000 Bytes, and 1 Megabyte (MB) = 1,000,000 Bytes.
Operating systems and RAM architectures measure capacity in binary units based on powers of 2 (IEC standard): 1 Kibibyte (KiB) = 1,024 Bytes, and 1 Mebibyte (MiB) = 1,048,576 Bytes. This tool cleanly separates decimal units from binary units to avoid misleading discrepancies.
Non-Linear Temperature Conversions
Unlike distance or mass, temperature scales do not share a common zero point. Water freezes at 0°C, 32°F, and 273.15 K.
Converting between Celsius, Fahrenheit, and Kelvin requires affine linear transformations: °F = (°C × 9/5) + 32, and K = °C + 273.15. Absolute zero is enforced at -273.15°C / 0 Kelvin.
Frequently asked questions
Is 1 MB equal to 1,000 KB or 1,024 KB?
Under international standards (SI), 1 Megabyte (MB) = 1,000 Kilobytes (KB) = 1,000,000 Bytes. The binary equivalent is 1 Mebibyte (MiB) = 1,024 Kibibytes (KiB) = 1,048,576 Bytes. This tool provides both formats.
How does the temperature conversion handle absolute zero?
Temperatures below absolute zero (0 Kelvin, -273.15°C, -459.67°F) are physically impossible and flagged with a clear validation notice.
Are my numbers sent to any server?
No. All calculations are executed locally inside your web browser with zero network latency.