# Where is the point-to-point curve fit option in WorkOut 2.0?**Document ID:** DQ092
**Relevant to following products:** WorkOut 2.0
**Document description:** How To: Point-to-point curve fit in WorkOut 2.0
The point-to-point curve fit is not available in the WorkOut 2.0, however is available in WorkOut 2.5 R2 (the WorkOut 2.5 R2 update is a free upgrade available from here).
The cubic spline may be a useful alternative - this also goes through all of the points but with a smoother fit. With WorkOut 2.0 extrapolation is now possible with the cubic spline for measurements outside the cubic spline range, the new implementation supports extrapolation by assuming a linear relationship between X and Y outside of the cubic spline range.
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