Universal Unit Converter
An all-in-one universal unit converter supporting 19 measurement categories across metric, imperial, US customary, and SI scientific systems.
How it works
Each unit is linked to a fundamental base unit using exact international standards. Temperature conversions apply linear scale shifts.
Formula
V_target = frac{V_input × K_from}{K_to}
Converts input quantities to standard SI base representation via exact BIPM international conversion constants, then divides by destination unit factors.
| Symbol | Variable | Unit | Description |
|---|---|---|---|
| V_input | Initial input magnitude | source unit | |
| K_from | Base SI multiplication ratio for source unit | SI ratio | |
| K_to | Base SI multiplication ratio for destination unit | SI ratio | |
| V_target | Computed quantity in destination unit | target unit |
Worked example
100 Meters to Feet
- Category:
- Length
- Value:
- 100
- From:
- meter
- To:
- foot
1 meter = 3.28084 feet. 100 meters = 328.084 feet.
Limitations
Assumes static standard atmospheric pressure (101.325 kPa) for hydrostatic and acoustic conversions.
Frequently asked questions
Are these unit conversion factors exact?
Yes. All conversion factors conform to the International System of Units (SI), NIST Special Publication 811, and the 1959 International Yard and Pound Agreement.
How does temperature conversion work?
Because temperature scales do not share a zero point, conversions use offset formulas: °F = (°C × 9/5) + 32, and K = °C + 273.15.
What digital storage base is used?
Data conversions use binary standard prefixes (1 KB = 1024 Bytes, 1 MB = 1024 KB, 1 GB = 1024 MB).
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Last reviewed: 2026-08-22.