To use the following calculator, first select the units for each entry. Then enter a number value in one of the display boxes, and press the Calculate button, The corresponding conversions will appear in exponential form in the remaining boxes. The exponential notation: e+08 for 10⁸ and e-11 for 10^-11, may be used for the initial input, but is not necessary. Note that commas will be eliminated, so when representing a decimal point they must be replaced by ".".

Frequency - Wavelength - Energy Converter Frequency MHz Hz cm-1 rad sec-1 Wavelength meter nm micron Å Energy eV kJ/mole kcal/mole hartrees   Frequency   Wavelength   Energy

c = ν + λ		ΔE = h • ν
ν = frequency     λ = wavelegth     c = speed of light