Free Weight Loss Tools
Calculators and trackers for people using prescription weight loss treatment in the UK. These tools are for guidance only — always follow the dose your prescriber gives you.
Mounjaro Click Calculator
Work out how many clicks on a Mounjaro KwikPen match your prescribed dose, with a click chart for each pen strength.
Open toolWegovy Click Calculator
Convert your Wegovy dose into pen clicks and see a dose chart for each strength of the FlexTouch pen.
Open toolBMI, BMR & Calorie Calculator
Check your BMI against NHS thresholds and estimate your daily calorie needs for weight management.
Open toolWeight Loss Tracker
Log your weight week by week while on Wegovy or Mounjaro and see your progress over time.
Open tool
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Most people benefit from reading independent guides alongside a clinician led plan. Prices and eligibility change often: confirm details on a regulated pharmacy site before you pay.
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