Exponential Smoothing Calculator
Result
Calculated result
103
Based on the values entered.
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Exponential Smoothing Calculator — free online calculator.
Formula
S₁ = x₁ · Sₜ = α·xₜ + (1−α)·Sₜ₋₁ · Forecast = last Sₜ
- Exponential Smoothing Calculator calculates its result from Previous forecast, Latest actual, Alpha. It uses the formula S₁ = x₁ · Sₜ = α·xₜ + (1−α)·Sₜ₋₁ · Forecast = last Sₜ. Change any input to recalculate the result instantly.
- The main inputs are Previous forecast, Latest actual, Alpha. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Exponential Smoothing
Inputs
- Previous forecast: 100
- Latest actual: 110
- Alpha: 0.3
Using Previous forecast = 100, Latest actual = 110, Alpha = 0.3, the calculated result is 103.
Sample result: Calculating…
Frequently asked questions
What does the Exponential Smoothing calculate?
Exponential Smoothing Calculator — free online calculator.
Which values should I enter?
Enter Previous forecast, Latest actual, Alpha using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: S₁ = x₁ · Sₜ = α·xₜ + (1−α)·Sₜ₋₁ · Forecast = last Sₜ.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.