**Description**

Converts a API gravity to oil specific gravity (water=1.0)

**Excel Function Syntax**

API2SG(SGoilAPI)

**Online Calculator**

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**Description**

Converts a API gravity to oil specific gravity (water=1.0)

**Excel Function Syntax**

API2SG(SGoilAPI)

**Online Calculator**

UnitConverter

Converts a number from one measurement system to another.

SG2API

Converts a oil specific gravity to API gravity

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Derivative for data samples at point t with smoothing.

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The exponential integral function – Ei(x)

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Proximal (Nearest-neighbor) Interpolation Algorithm. Interpolate at point t.

CubicSplineInterpolate

A natural cubic spline with continuous second derivative in the interior and zero second derivative at the end points. Interpolate at point t.

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CubicSplineIntegrate

A natural cubic spline with continuous second derivative in the interior and zero second derivative at the end points. Integrate up to point t.

CubicSplineIntegrateT1T2

A natural cubic spline with continuous second derivative in the interior and zero second derivative at the end points. Integrate from point t1 up to point t2.

CubicSplinesIntersection

x value of intersection point between two cubic splines.

LinearSplineInterpolate

Linear Spline Interpolation Algorithm. Interpolate at point t.

LinearSplineDifferentiate

Linear Spline Interpolation Algorithm. Differentiate at point t.

LinearSplineIntegrate

Linear Spline Interpolation Algorithm. Integrate up to point t.

LinearSplineIntegrateT1T2

Linear Spline Interpolation Algorithm. Integrate from point t1 up to point t2.

LinearSplinesIntersection

x value of intersection point between two linear splines.

StepInterpolate

Step Interpolation Algorithm. Interpolate at point t.

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