How Many Kilos Should You Lose Per Week? The Healthy, Sustainable Pace

"Lose 10 kg in a month" sells programs, but rarely works long-term. The most useful question isn't "as fast as possible," but "what pace can I actually sustain without losing muscle, energy, or the weight itself a few months later."

The commonly recommended pace

The most frequently cited public health guidance converges around 0.5 to 1% of body weight per week, roughly 0.5 to 1 kg weekly for most adults. That's a range, not an obligation: some weeks will fall below it, others above -- it's the trend over several weeks that matters, not the exact number on the scale every Monday.

Thinking in percentage rather than absolute kilos is more accurate: losing 1 kg a week is a very different effort for someone weighing 60 kg (1.6% of their weight) than for someone weighing 100 kg (1%). The higher your starting weight, the better a faster pace tends to be tolerated early on.

Why going faster backfires

A pace beyond that range almost always comes from an aggressive calorie deficit, with several well-documented consequences:

• Disproportionate muscle loss if protein intake doesn't keep up -- see our guide on how much protein for fat loss. That muscle is what largely determines your basal metabolism.
• More pronounced metabolic adaptation, which slows your energy expenditure and sets the stage for rapid weight regain once the diet ends -- the full mechanism is covered in our article on the yo-yo effect.
• Fatigue, irritability, and hard-to-manage hunger, which make giving up more likely than succeeding in the medium term.

Going fast feels like faster progress -- but if half the weight lost comes back six months later, the "slow and sustained" pace wins by a wide margin over time.

How to calculate your own realistic pace

1 kg of fat represents roughly 7700 kcal. A daily deficit of 500 kcal therefore theoretically produces a loss close to 0.45 to 0.5 kg per week; a larger deficit can push toward the higher end of the recommended range, but rarely beyond it without medical supervision. Use our calorie deficit calculator to start from a number based on your own energy needs (your TDEE) instead of an arbitrary target found online.

When the pace slows down

A gradual slowdown over the weeks is normal: your body needs fewer calories at a lower weight, and part of the rapid initial loss was water, not fat. This is covered in our article on weight loss plateau and metabolic adaptation. Before cutting calories further, first check you're not making one of the classic mistakes that sabotage weight loss.

When to see a healthcare professional

These guidelines are general and don't replace individualized medical advice. If you're aiming for significant weight loss, have diabetes, a thyroid condition, a history of disordered eating, or are pregnant or breastfeeding, get support from a doctor or dietitian before setting your target pace.

How Calerys helps

The hard part isn't knowing the right pace, it's knowing whether your actual eating is really producing that deficit. With Calerys, a WhatsApp message like "chicken fried rice" or a photo of your plate gives you calories and macros instantly -- enough to check week after week whether you're in the right range, without weighing or calculating everything yourself.

Conclusion

Aiming for 0.5 to 1% of your body weight per week remains the most solid benchmark for losing weight without sacrificing muscle or setting up a future regain. A faster pace can feel appealing in the moment, but it's consistency -- not speed -- that determines whether the weight you lose actually stays off.