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Transmission to Absorbance Conversion Calculator
Absorbance measures the amount of light absorbed by a material at a particular wavelength, and is a unitless quantity typically denoted by the symbol "A". Transmission, on the other hand, represents the fraction of incident light that passes through a material without being absorbed or scattered, and is expressed as a decimal. The formulas to convert between the two values are as follows:
A = -log10(T)
T = 10-ATo use the calculator, enter either absorbance or transmittance and the other will be automatically calculated.
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References
This online resource may be cited as follows
MLA | "Quest Calculate™ Transmission to Absorbance Conversion Calculator." AAT Bioquest, Inc., 12 Dec. 2025, https://www.aatbio.com/tools/quick-calculator/transmission-absorbance-conversion-calculator. | |
APA | AAT Bioquest, Inc. (2025, December 12). Quest Calculate™ Transmission to Absorbance Conversion Calculator. AAT Bioquest. https://www.aatbio.com/tools/quick-calculator/transmission-absorbance-conversion-calculator. | |
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