Universal unit converter
A value between units of length, mass, volume, area, temperature, pressure, time, speed, energy, power, angle or frequency.
Result
Converted value
0.001 µm
- Formula
- 1 nm = 0.001 µm
Calculation, assumptions and sources
OverviewConversion of a value between two units of the same category, with the conversion factor or formula.
Conversion of a value between two units of the same category, with the conversion factor or formula.
Method & formulastarget_value = source_value × factor
targetvalue = sourcevalue × factortargetvalue = f(sourcevalue)
Most conversions are a plain factor. Temperature is affine: it adds an offset to the factor.
- Base unit
- the internal reference unit of each category (the metre for length, the kelvin for temperature…), through which every conversion passes.
- Conversion factor
- the number to multiply a value by to go from one unit to another, when the relationship is proportional.
- Affine conversion
- a relationship with an offset as well as a factor, as between °C, °F and K; the full formula is shown instead of a factor.
- Raw value
- the result in machine format (decimal point), to paste into a calculation or a spreadsheet.
Validity domainA temperature below absolute zero (0 K) is rejected, whatever the unit.
A temperature below absolute zero (0 K) is rejected, whatever the unit. Other categories accept zero and negative values, which make sense for a coordinate or a difference.
Precision and raw valueThe displayed result is rounded to 6 significant figures.
The displayed result is rounded to 6 significant figures. The raw value is the one copied to the clipboard and exported to CSV.