Reviewed by Arisa Tanaphon, Certified Tai Chi Instructor, Mindful Movement Specialist
Key takeaways
- A weight-loss calculator estimates energy needs and a possible timeline. Actual weight change varies; review the estimate against your progress and individual health needs.
- Log activity time realistically. In Tai Chi for Seniors & Beginners, Gentle Morning Warm-Up has 12 movements: 6 minutes moving, about 9 minutes with preparation before extra pauses.
- Preparation, rest, and replaying a video are not the same as continuous movement. An app completion does not verify a particular calorie deficit or amount of weight lost.
- Use the app’s short or extended plan sessions to fit available time. Combine activity with an appropriate eating plan; seek individual advice when a weight-loss target may be unsuitable.
How this calculator works
This tool estimates maintenance calories from age, sex, body size, and activity level. It then suggests mild and moderate daily deficit targets.
The timeline estimate is based on gradual weekly change and is intended as planning guidance, not a guaranteed outcome.
Healthy Weight Loss Calculator
Estimate a realistic calorie target and timeline for gradual, sustainable weight loss.
Estimated calorie targets
0 kcal/day
Moderate deficit (~0.5 kg/week)
Mild deficit target
0 kcal/day
Estimated maintenance
0 kcal/day
Weight to lose: 0 kg
Estimated timeline (mild pace): 0 weeks
Estimated timeline (moderate pace): 0 weeks
Current BMI: 0
Target BMI: 0
This calculator gives estimates only. It is not medical advice.
For healthy and sustainable weight loss, many adults do best with gradual reduction, protein adequacy, strength work, sleep, and clinical guidance when needed.
Healthy calorie deficit ranges
- Mild deficit: often around 300 kcal/day below estimated maintenance.
- Moderate deficit: often around 500 kcal/day below estimated maintenance.
- Very large deficits can increase fatigue, hunger, and lean mass loss risk.
How to think about timeline
Healthy weight loss is typically gradual, often measured over weeks and months rather than days.
A realistic plan is easier to sustain and more likely to preserve long-term habits than aggressive short-term cuts.
Weight loss quality matters
- Prioritize adequate protein and resistance exercise to support lean mass.
- Track progress trends, not day-to-day fluctuations.
- Adjust calorie targets based on real-world response, energy, and adherence.
- If you have a medical condition, get personalized medical nutrition guidance.
FAQ
Many adults do well with gradual progress rather than aggressive cuts, especially for long-term adherence.
No. It is a planning estimate and not a substitute for medical care.
Activity level strongly affects estimated maintenance calories, so it changes target intake recommendations.
References
Updated: April 15, 2026
