1. Enter or Paste X,Y Data

(Tab/space separated X Y. Use . or , for decimals)

Select preset or enter custom formula:

Custom Formula #1 Custom Formula #2 Custom Formula #3 Custom Formula #4 Linear: a*x + b Polynomial (2nd order): a*x^2 + b*x + c Polynomial (3rd order): a*x^3 + b*x^2 + c*x + d Power Law: a * x^b Power Law (Offset): a * x^b + c Exponential Decay: a * exp(-b*x) Exponential Growth (Offset): a * exp(b*x) + c Double Exp. Decay: a*exp(-b*x) + c*exp(-d*x) Logarithmic: a * ln(x) + b Inverse: a / x + b Sigmoid (Logistic): a / (1 + exp(-b*(x-c))) + d Michaelis-Menten: a * x / (b + x) Gaussian: a * exp( -( (x-b)^2 / (2*c^2) ) ) Gaussian (Offset): a * exp( -( (x-b)^2 / (2*c^2) ) ) + d Sinusoidal: a * sin(b*x + c) + d

3. Adjust Parameters

4. Curve Fitting