deficit calorico calculator

What Is a Calorie Deficit?

A calorie deficit means you consume fewer calories than your body burns in a day. Over time, this energy gap encourages your body to use stored energy (mostly body fat), which leads to weight loss. In Spanish, this is often called déficit calórico.

The key is consistency. A small daily deficit maintained for months usually works better than a large, unsustainable cut that causes burnout, poor sleep, and binge eating.

How This Deficit Calorico Calculator Works

This tool uses the Mifflin-St Jeor equation to estimate your Basal Metabolic Rate (BMR), then multiplies it by your activity factor to estimate your Total Daily Energy Expenditure (TDEE), also called maintenance calories.

In simple terms:

• BMR: Calories your body uses at complete rest.
• TDEE: BMR plus movement, exercise, and daily activity.
• Deficit target: TDEE minus your selected deficit.

Your final number is an estimate, not a perfect measurement. Real-world adjustments are normal and expected.

How Big Should Your Deficit Be?

Most people do well with a 10% to 20% deficit. A larger deficit can speed up scale loss, but it also increases fatigue, hunger, and training performance drops.

• 10%: Easier adherence, slower but steady progress.
• 15%: Balanced option for many beginners.
• 20%: Popular choice for clear weekly progress.
• 25%: More aggressive; better for short phases and higher body-fat levels.

Set Up Your Diet for Better Results

1) Keep Protein High

A good range is around 1.6 to 2.2 grams of protein per kilogram of body weight per day. Higher protein supports satiety and helps maintain muscle during fat loss.

2) Focus on Food Volume

To stay full in a deficit, prioritize vegetables, fruit, legumes, potatoes, lean meats, low-fat dairy, and whole grains. High-volume foods let you eat larger portions for fewer calories.

3) Don't Ignore Sleep

Poor sleep can increase hunger, cravings, and stress. Aim for 7-9 hours most nights to make calorie control much easier.

Training During a Cutting Phase

You do not need endless cardio. A better strategy is:

• Strength train 2-5 times per week to preserve muscle mass.
• Keep daily steps consistent (for example, 7,000-10,000).
• Add cardio gradually only when needed.

If your energy crashes, reduce the deficit before increasing training volume.

Common Mistakes to Avoid

• Dropping calories too low from day one.
• Not tracking portions consistently.
• Changing calories every few days before trends appear.
• Ignoring weekend overeating.
• Expecting linear fat loss week after week.

How to Adjust After 2-3 Weeks

Track your morning body weight daily and use a weekly average. If weight is not trending down after 2-3 consistent weeks, reduce calories by about 100-200 per day or increase activity slightly.

If weight is dropping too fast and performance is declining, increase calories modestly to improve recovery and adherence.

Final Note

This deficit calorico calculator gives a strong starting point for planning your fat-loss calories. The best plan is one you can follow for months, not days. For medical conditions, eating disorders, pregnancy, or medications affecting weight, consult a qualified clinician or registered dietitian.