---
title: "Spectroscopy Calculators | XTRAW Tools"
description: "Spectroscopy calculators for Beer-Lambert law, absorbance, transmittance, concentration, wavelength, frequency, photon energy, and light measurements."
url: "https://xtraw.com/tools/calculators/science-calculators/chemistry-calculators/spectroscopy-calculators/dirDesc"
date: "2026-08-20T17:47:25+00:00"
language: "en-GB"
---

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 # Spectroscopy Calculators

#### Latest Tools

 [ ![Wavelength Frequency Energy Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-wavelength-frequency-energy-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/chemistry-calculators/spectroscopy-calculators/wavelength-frequency-energy-calculator "Wavelength Frequency Energy Calculator")  new

## [Wavelength Frequency Energy Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2386&virtuemart_category_id=245&Itemid=173)

 Convert between wavelength, frequency, and photon energy. ...

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 [ ![Beer-Lambert Law Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-beer-lambert-law-calculator-360x360_230x230.jpg) ](https://xtraw.com/tools/calculators/science-calculators/chemistry-calculators/spectroscopy-calculators/beer-lambert-law-calculator "Beer-Lambert Law Calculator")  new

## [Beer-Lambert Law Calculator](https://xtraw.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=2385&virtuemart_category_id=245&Itemid=173)

 Calculate absorbance, transmittance, concentration, or path ...

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