°Plato & Specific Gravity Calculator
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Conversion Formulas
$$\small SG = 1 + \frac{^\circ\text{P}}{258.6 - \left(\frac{^\circ\text{P}}{258.2} \times 227.1\right)}$$
$$\small ^\circ\text{P} = -616.868 + 1111.14\left(\text{SG}\right) - 630.272\left(\text{SG}\right)^2 + 135.997\left(\text{SG}\right)^3$$