Online Calculators > Health Calculators > Weight Gain Calculator

Weight Gain Calculator

Weight gain calculator to help you gain weight by measuring your daily caloric intake with a desired weight goal. The online weight gain calculator is calculated based on your gender, height, weight, and daily activity.

Online Weight Gain Calculator

US Unit Metric Unit
Gender Male       Female
Weight lbs OR kg
Height feet inches OR cm
Daily Activities
Want to Lose Weight     Gain Weight
lbs OR kg
Days to lose/gain weight
Daily Caloric Requirements
Maintain Current Weight:
Meet Your Goal Daily Need:
Maintain New Weight (after reaching goal):

If you plan to lose lbs in , you will need to take calories instead of calories per day currently, or exercise more to boost your calorie burn about calories per day.

If you plan to gain lbs in , you will need to take calories instead of calories per day currently, which is more calories per day.

Your desired goal requires you to burn more than 3500 calorie per day which may not be safe. Please either increase the number of days to lose weight or decrease your weight goal in the desired time frame.

How to use the weight gain calculator?

Choose a desired goal for your weight and the amount of time that you plan to achieve that goal.

The weight gain calculator will show you how many calories you will need to take each day to reach your weight gain goal.

How to gain weight?

There are many ways to gain weight, both healthy and unhealthy. One can eat high-calorie junk food such as chips and drink soda daily to gain a few extra pounds on your belly, but that's not a healthy way to do it.

Instead, one should focus on eating healthy and establishing a natural way to gain weight. Following are nine healthy ways to gain weight.

9 healthy ways to gain weight

  • Consume more calories - eat more calories than you burn each day. The first step to gaining weight is to start eating more food and consuming more calories. For many people, eating more is all they need to do to gain a few more pounds. In order to gain weight, they need to consume 200-300 more calories than they do now.

  • Eat more frequently - eat more frequently, eat 5 - 6 times a day with smaller portions rather than 2 - 3 with large portions.

  • Drink whole milk -  milk has good quality protein and calories, drink milk instead of water or soda when you feel thirsty.

  • Don't drink water while having meals - if you don't have a stomach, drinking water may fill you up while having lunch or just before a meal. Instead, drink water after a meal.

  • Eat Healthy Snacks - instead of junk food, replace them with healthy snacks like nuts, avocados, dark chocolate, cheese, and yogurt.

  • Smoothies and shakes - add homemade smoothies and shakes to your drinking list. Instead of your regular cup of coffee, or a can of soda, replace them with high-protein smoothies and shakes. There are many healthy recipes for smoothies and shakes that you can look up online and make yourself.

  • Red meat, salmon, and rice - instead of eating burgers or pizza, try eating more red meat, salmon, and rice for lunch or dinner.

  • Exercise - Not only does exercise help overweight people lose weight, but it can also help underweight people to gain weight. You can do push-ups, situps, yoga, jogging, and weight lifting. Exercise will burn some calories, but not as much as you think. Regular exercise will make you feel hungry more often, so you will end up eating more. Exercise is a healthy way of living that will also make you stronger and turn fat into lean muscles.

  • Track your progress - You should track your progress for the best results. Track what you eat daily and how much you eat. You can do this manually or use an app to help you track. Weight yourself daily so you are conscious about your weight and how much progress you are making. When you weigh yourself and see results, it will encourage you to work harder and eat healthier.

Gaining weight takes time and patience. It may take longer than you hope. But don't lose hope. Build a good habit of eating and drinking healthy food and snacks, and you will be on your way to gaining weight.

13 healthy food to gain weight fast

To gain weight fast, one needs to eat high calories and high-nutrient food. The following is a list of 13 healthy foods to gain weight fast.

  1. Whole Milk
  2. Cheese
  3. Eggs
  4. Red meat
  5. Potatoes
  6. Avocados
  7. Whole Grain Bread
  8. Rice
  9. Salmon and Oily Fish
  10. Dark Chocolate
  11. Full Fat Yogurt
  12. Bananas
  13. Nuts

Not only should you eat food with high calories, but you should also drink beverages that have high calories such as coffee with cream, tea, milk, juice, and homemade smoothies made up of fruits and vegetables.

10 unhealthy food to avoid gaining weight

Not only do you need to know what type of food to eat, but you also need to be aware of what kind of food to avoid. Here is the top junk food you should avoid at all times.

  1. French Fries
  2. Chips
  3. Donuts
  4. Burger
  5. Soda
  6. Fried Chicken
  7. Fish and Chips
  8. Ice Cream
  9. Pizza
  10. Hot Dog

While eating junk food will gain weight, the weight will end up mostly in your belly which may cause diseases such as diabetes and heart disease.

Therefore, you need to consume food that's healthy for weight gain and stay away from the unhealthy food source.

Gaining Weight Faqs

Why is gaining weight important?

While more people are having problems losing weight in modern society, there are many who are having problems gaining weight.

Just like being overweight can cause diseases and health problems, underweight people are facing health risks such as osteoporosis, weakened immune system and muscle strength, and even early death.

For women, being underweight can cause period problems and infertility.

Therefore, it is just as important for underweight people to gain weight than for overweight people to lose weight.

How to check if I'm underweight?

You can use our BMI calculator to check if you are underweight. If your body mass index (BMI) is lower than 18.5, it suggests that you might be underweight.

How many pounds is considered underweight?

Whether you are underweight depends on your body mass index or BMI. There are two factors that determine your BMI, your height and weight. If your BMI is under 18.5, then you are underweight.

For example, if you are 6 feet tall and weigh 130 pounds, then according to our BMI calculator, your BMI is 17.63. Since your BMI is below 18.5, you are underweight.

Can being underweight cause death?

Being underweight causes many health issues and being severely underweight might cause early death.

What BMI is severely underweight?

BMI under 16.5 is considered severely underweight. People who have a BMI lower than 16.5 should consult with their doctors on how to gain more weight.

Is being underweight worse than being overweight?

It's hard to say which is worse depending on how overweight or underweight a person is. Let's just say that both being underweight and being overweight are bad as they cause health problems.

Is it unhealthy to be underweight?

Yes, being underweight is just as unhealthy as being overweight as it impacts your health and may cause diseases.

How can I gain weight in 7 days or less?

Following the 9 steps layout in this article, you should be able to gain some weight in 7 days. However, for an underweight person to stay at a normal weight level, they must maintain a healthy lifestyle such as eating healthy food for weight gain and exercising regularly. Many people give up eating healthy food and workout after they gain weight only to see their weight drop again.

What diseases and health issues can be caused by being underweight?

Following are 7 diseases that can be caused by being underweight.

  1. Malnutrition
  2. Weaken immune system
  3. Fertility issues for women that are caused by irregular periods or lack of periods.
  4. Growth and development issues for children.
  5. Weak muscle strength
  6. Osteoporosis
  7. Early death

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