Calibration Curve Calculator — Free Online Tool
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Calibration Curve Calculator

Interpolate unknown sample concentration using linear regression ($y = mx + c$)

Formula: $x = \frac{y - c}{m}$
Where $y$ is the measured absorbance/signal, $m$ is the slope, and $c$ is the y-intercept of the calibration line.
Regression Parameters

Calculation Results

⚠️ Ensure that your sample's measured signal falls strictly within the linear dynamic range of the calibration standards. Extrapolating outside the tested standard curve can introduce severe measurement errors.

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