Dial-in your

Daily Calories

Use this quick BMR calculator to estimate how many calories your body burns at rest — then we factor in your activity level to give you a realistic starting point for fat loss, muscle gain or maintenance.

• Based on Mifflin-St Jeor, the gold-standard predictive equation.
• Adjusts for training frequency using activity multipliers.
• Gives separate BMR and TDEE values.
• Ideal as a starting point for a personalised Thrive coaching plan.

Note: Numbers are an estimate, not a medical prescription. We fine-tune intake based on your weekly progress, recovery and energy levels.