Unit Converter
Universal unit converter. Convert instantly between length, area, volume, speed, mass/weight, and temperature. Choose category, pick From and To units, see the formula and get the result.
Full original guide (expanded)
Unit Converter
A single tool to convert the most common engineering, science, and everyday units. Start by choosing a category below.
Converted 1 m → 100 cm
Result
100
Quick list for current category
How conversions are calculated
For all linear units (length, area, volume, speed, mass) the calculator converts your number to a base unit, and from that base unit to the final one.
General formula:
\( \text{toValue} = \text{fromValue} \times \frac{\text{factorFrom}}{\text{factorTo}} \)
Where factor is the number of base units per selected unit.
Temperature
Temperature requires specific formulas, e.g. °C → °F: \( F = C \times \frac{9}{5} + 32 \), and K = C + 273.15.
Tips
- If you do this often, bookmark the page.
- When in doubt about gallon type, use our dedicated volume converter.
Formula (LaTeX) + variables + units
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General formula: \( \text{toValue} = \text{fromValue} \times \frac{\text{factorFrom}}{\text{factorTo}} \) Where factor is the number of base units per selected unit.
- No variables provided in audit spec.
- NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures - NIST — SI units — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/owm/metric-si/si-units
Last code update: 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.