2025-07-14 00:00:00 Introducing SpectroCalc: your go-to tool for seamlessly converting between different units in spectroscopy! Whether you're analyzing a spectrum and need to know the equivalent wavelength in energy (eV), or if you're in a lecture and the presenter is using wavenumbers (1/cm) but you prefer to think in nanometers, SpectroCalc has got you covered. With SpectroCalc, you can effortlessly convert between nanometers (nm), energy (eV), wavenumbers (1/cm), and frequency (Hz) in just one click. Plus, you have the flexibility to choose whether to use constants in the air or a vacuum, ensuring accuracy in your calculations every time. Additionally, SpectroCalc offers the unique functionality of calculating the difference between two values in different units - no more problems with the estimation of the FWHM or the distance between two peaks! Say goodbye to confusion and hello to convenience with SpectroCalc!