Weight Watcher Points Calculator
Convert nutrition label values into Weight Watchers-style points.
About Weight Watcher Points Calculator
Weight Watchers assigns a point value to each food based on its nutrition profile. SmartPoints (the current system) rewards protein — which is satiating — and penalises saturated fat and sugar. The formulas on this calculator are well-documented third-party approximations of the proprietary WW algorithm and should be treated as estimates.
Formula
SmartPoints (approximate)
SmartPoints = 0.0305×cal + 0.275×satFat + 0.12×sugar − 0.098×protein
- cal
- Calories (kcal)
- satFat
- Saturated fat (g)
- sugar
- Total sugar (g)
- protein
- Protein (g)
Worked example
With the default values below, Weight Watcher Points Calculator returns Points of 7.9. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Calories (kcal)minimum 0
- 200
- Saturated fat (g)minimum 0
- 5
- Total sugar (g)minimum 0
- 10
- Protein (g)minimum 0
- 8
- Points systemone of SmartPoints (post-2015), PointsPlus (2010–2015), Original (pre-2010)
- SmartPoints (post-2015)
Results
- Points
- 7.9
- System used
- SmartPoints
Step by step
- 1Formula= Points = cal×0.0305 + sat_fat×0.275 + sugar×0.12 − protein×0.098
- 2Substitute values= 7.9
- 3Points (rounded)= 7.9
Assumptions and limits
- The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- This calculator uses third-party approximations of the proprietary Weight Watchers algorithm. Results are estimates for informational purposes only and may differ from the official WW app. Consult a registered dietitian for personalised dietary advice.
- This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
This calculator uses third-party approximations of the proprietary Weight Watchers algorithm. Results are estimates for informational purposes only and may differ from the official WW app. Consult a registered dietitian for personalised dietary advice.
Frequently Asked Questions
Are these the official Weight Watchers formulas?
No. Weight Watchers does not publish its proprietary algorithm. These formulas are widely-cited third-party reverse-engineering approximations. Results may differ slightly from the official WW app.
Why does SmartPoints penalise sugar but not total carbohydrates?
The SmartPoints system specifically targets added sugars and saturated fat — the two dietary components most strongly associated with increased cardiovascular risk — rather than total carbohydrates, which include nutritious complex carbs like whole grains.
Can points be negative?
In theory the protein deduction could exceed the calorie addition for very high-protein, very low-calorie foods, but WW enforces a floor of 0 points. This calculator applies the same floor.