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How Many Grams Of Hair Extensions Do I Need?

  • Post category:Hair
  • Post last modified:May 22, 2024
  • Reading time:13 mins read

Choosing the right weight of hair extensions is crucial for achieving the desired look, whether it’s adding volume, length, or both. The weight of hair extensions, measured in grams, determines how thick and full the extensions will appear once applied. This article will guide you through the process of selecting the appropriate weight of hair extensions based on your hair type, desired style, and other factors.

Hair Extensions and Their Weight

Hair extensions are additional hair strands that are attached to your natural hair to create a desired look. They can be made from various types of hair, including human hair, which offers the most natural appearance and styling versatility. The weight of hair extensions is measured in grams, which refers to the amount of hair present in the extension set. The weight determines the thickness of the weft, or the part of the extension that attaches to your natural hair. Additionally, the length of the extensions also contributes to the overall weight.

Different Weights of Hair Extensions and Their Uses

50 Grams Hair Extensions

50-gram hair extensions are ideal for individuals with fine or thin hair who are looking to add a little bit of length and volume. These extensions provide a discreet and natural enhancement, blending seamlessly with your own hair. They are perfect for filling in thinning areas or adding a touch of thickness to shoulder-length hair.

100 Grams Hair Extensions

For medium hair lengths and for individuals looking to achieve a full head of hair extensions, 100-gram hair extensions are the way to go. These extensions offer a substantial increase in length, volume, and overall thickness, giving you a glamorous and eye-catching transformation. They are perfect for adding noticeable length and volume to shoulder-length hair, providing the necessary density for a full head of hair extensions. 100 grams is the average weight that most will need.

150-200 Grams Hair Extensions

If you have very thick hair or simply desire a big transformation, 150 grams of hair extensions or even heavier sets are recommended. These extensions are perfect for those who already have a lot of hair and are looking to achieve maximum volume, thickness, and length. They are ideal for very thick hair types, especially with short hair, and provide maximum volume and fullness.

Factors to Consider When Choosing Hair Extension Weight

Hair Density

The density of your natural hair plays a significant role in determining the weight of hair extensions you need. Hair density refers to how much hair you have, rather than the thickness of individual strands. For example, you can have thick hair but not very much of it, which means you have fine to average hair density. Here are some general guidelines based on hair density:

  • Thin and Sparse Hair: 70-100 grams
  • Average Thickness Hair: 100-150 grams
  • Thick, Dense Hair: 150-180 grams
  • Very Thick Hair: 180-200 grams.

Hair Length

The length of your natural hair also affects the weight of hair extensions you should choose. Extensions should not be more than twice the length of your natural hair for a natural look. Here are some recommendations based on hair length:

  • Short Hair: 100-130 grams for thin hair, 130-150 grams for average thickness, and 140-180 grams for thick hair.
  • Medium Hair: 100-150 grams for average thickness, and 150-200 grams for thick hair.
  • Long Hair: 125-175 grams for average thickness, and 175-200 grams for very thick hair.

Types of Hair Extensions and Their Weight

Different types of hair extensions have varying weight requirements. Here are some common types and their typical weight ranges:

Clip-In Hair Extensions

Clip-in hair extensions are a popular choice for those looking for a temporary solution. They are easy to apply and remove, making them ideal for special occasions. Clip-in extensions typically come in sets weighing between 100 and 200 grams. For a natural look, 100 grams is usually sufficient, but for a more dramatic transformation, 200 grams may be needed.

Tape-In Hair Extensions

Tape-in extensions are known for their flat, seamless finish and are suitable for fine or thin hair. They are applied using adhesive tape and can last up to eight months with proper care. Tape-in extensions are usually sold in wefts, with each weft weighing around 25 grams. For a full head, you may need 40-60 pieces, depending on your hair’s thickness.

Sew-In or Weft Hair Extensions

Sew-in or weft extensions are ideal for those with shoulder-length or longer hair. They add instant length and fullness and are attached using tiny beads sewn into the natural hair. Weft extensions typically weigh around 50 grams per bundle. For a full head, you may need 2-4 bundles, depending on your hair’s thickness.

Fusion or Keratin Bond Extensions

Fusion or keratin bond extensions are a more permanent solution, lasting up to six months. They are applied using a low-temperature heating tool that softens the keratin bond around the natural hair. These extensions are usually sold in strands, with each strand weighing around 1 gram. For a full head, you may need 100-200 strands, depending on your hair’s thickness.

Practical Tips for Choosing the Right Weight

  1. Consult a Professional: Always consult with a professional stylist to determine the right weight and type of hair extensions for your specific needs. They can provide personalized recommendations based on your hair type, length, and desired look.
  2. Consider Your Lifestyle: Choose a weight that fits your lifestyle. Heavier extensions may require more maintenance and care, while lighter extensions are easier to manage.
  3. Test Before You Commit: If you’re unsure about the weight, start with a lighter set and see how it feels. You can always add more extensions later if needed.
  4. Maintenance and Care: Remember that hair extensions require regular maintenance to keep them looking their best. Follow the care instructions provided by your stylist or the manufacturer to ensure the longevity of your extensions.


Selecting the right weight of hair extensions is essential for achieving a natural and seamless look. By considering factors such as hair density, length, and the type of extensions, you can make an informed decision that meets your specific needs. Whether you’re looking to add a little volume or completely transform your look, the right weight of hair extensions can help you achieve the hair of your dreams.


Is 100 grams of hair enough for a full head?

100 grams of hair extensions are generally sufficient for individuals with fine or thin hair who are looking to add volume and a bit of length. However, for those with medium to thick hair, 100 grams may not provide a seamless blend and could result in a less natural look. For a full head of extensions, especially for thicker hair, it is recommended to use at least 150-200 grams.

Is 120g of hair extensions a lot?

120 grams of hair extensions is considered a moderate amount, suitable for adding volume and some length to fine or medium hair. It is often used for a natural, everyday look rather than a dramatic transformation. For those with thicker hair or seeking a more voluminous effect, higher weights such as 160 grams or more may be necessary to achieve the desired fullness and blend.

Is 50g extensions enough?

50 grams of hair extensions is typically not enough for a full head but can be useful for adding volume to specific areas, such as the sides or back of the head. This amount is ideal for individuals with very fine hair who want a subtle enhancement or for those looking to add highlights or lowlights without a significant change in overall volume.

What are the different types of hair extensions?

There are several types of hair extensions, including clip-in, tape-in, weave (sew-in), fusion (pre-bonded), and micro-link (micro-bead) extensions. Clip-ins are temporary and easy to apply, while tape-ins and weaves offer semi-permanent solutions. Fusion extensions use heat or glue for attachment, and micro-links use small beads to secure the extensions. Each type has its own application method, longevity, and maintenance requirements.

How to choose the right thickness of hair extensions?

Choosing the right thickness of hair extensions depends on your natural hair’s density and the desired look. For fine hair, 100-120 grams can add volume without being too heavy. Medium hair types may benefit from 160-180 grams for a fuller look, while thick hair often requires 200 grams or more for a seamless blend. Consider your hair’s length and the extension’s weight to ensure a natural and comfortable fit.