OPEX Bristol Calorie Calculator
Your details
Weight
7,000
Active
Consistent daily movement — you're covering meaningful ground each day.
Your fat loss target
Your numbers
Daily calorie target
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Maintenance calories
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to stay the same weight
Daily deficit
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Progress milestones
These are estimates based on Mifflin-St Jeor, one of the best-evidenced calorie formulas available. Other formulas exist and give slightly different numbers — all are estimates. Use this as a starting point: track your weight trend over 2–3 weeks and adjust by 100–200 kcal if needed.
You've got your numbers.
Now let's track what actually changes.
If you're starting a weight loss journey, the scale only tells you part of the story. An InBody scan shows you what's really shifting — fat loss, muscle preserved, hydration — so you know your plan is working before the mirror or the scale catch up.
Use code INBODY2026 for your first scan free. No commitment, no hard sell — just a clear read on where you're starting from, with a coach who can walk you through what it means.