
Buying a dildo should be an informed and comfortable process. Here are essential aspects to consider.If you’re going to buy a
Dildo, it's not recommended to rely on guesswork for determining the sizes. One common error people make when purchasing dildos online is selecting an incorrect size. Dildos range from petite probes suitable for a first-timer to colossal 12-inch models. With countless options on hand, it is essential to know how to pick the best length and width to match your wishes and requirements. If you're contemplating this issue, then this guide is suitable for you.
Why Does Size Matter?
Size is a crucial factor. For beginners, starting with a smaller dildo is advisable. The length of a dildo is measured in two ways: “actual length” from base to tip and “insertable length” which accounts for the part that can realistically be inserted without obstruction. Diameter, measured at the widest point, also matters. Longer dildos allow for deeper penetration, while shorter ones can target more precisely. Thickness or girth influences the feeling of fullness. Softer materials may feel larger due to flexibility, and firmer ones more precise.
When measuring a dildo, consider four metrics:
- Total Length
- Insertable Length
- Width (or diameter)
- Girth (or circumference)
These are 4 unique measurements. Typically, longer dildos tend to have greater width and girth, but this is not always the case. Short, thick dildos and very long, skinny dildos can also exist.
The average dildo size is around 7.5″ long and 1.5″ in width, but there are various sizes available, from small (comparable to one or two fingers in width and short) to large (for intense sensations). For vaginal use, one can measure by inserting fingers and using a soft measuring tape for girth and a long, smooth item for insertable length. For anal use, similar methods apply, but with extra care due to the sensitivity, and ensuring a flared base is essential.
1. Total Length
The total length is the dildo’s full vertical measurement from top end to bottom end, including any attached features like balls or suction cups.
If you're uncertain about assessing the length of the dildo solely based on numbers, we provide an excellent image that offers a clearer understanding of sizing.

2. Insertable Length
This is the dimension of potential insertion into the body for a given dildo; however, the presence of balls or suction cups can reduce the insertable length of a 9" dildo to 6" or 5". The length of a dildo can greatly influence your experience. If you're new to using dildos or prefer shallow penetration, opting for a shorter starter dildo might be ideal. On the other hand, if you're seeking deeper stimulation, a longer dildo could be more suitable.
Pro Tip: Always consider the 'insertable length' as the portion that will be inserted into your vaginal or anal.
3. Width
The width (or diameter) is the distance between the two sides of the dildo, which plays a significant role in the sensations you'll experience. Consider a dildo like a circle. This value represents the diameter or length of a line drawn through the center of the circle. Even though not all dildos are perfectly circular, this measurement is still applicable.
If you're a beginner, start with a narrower dildo and gradually work your way up as you become more comfortable. For those seeking a fuller feeling, a wider dildo might be more satisfying. Remember, width can make a significant difference, so choose carefully.
4. Girth
Dildo girth (or circumference) is an indicator of its width, with wider toys having larger circumference. Width is a more straightforward dimension to consider when assessing size, but the circumference of a dildo can be difficult to conceptualize.
Pro Tip: Here's an excellent online tool that allows you to effortlessly switch between circumference and diameter measurements.

Measuring Your Perfect Fit
1. Measuring for Vaginal Use:
After lubricating your vagina, gently insert one finger, then gradually add a second. Continue adding more until you reach a state of maximum relaxation and determine your limit. Afterwards, use a soft measuring tape to measure the circumference around your fingers and determine the girth.
To determine the insertable length, insert a long item with a smooth surface. Continue gently pushing until you reach your limit. Use your fingers to mark the point, remove the item, and measure the distance between the tip and your fingers. This measurement represents the insertable length of your dildo.
2. Measuring for Anal Use:
The vaginal and anal measurements are similar, but the anus is more sensitive. Take care when measuring for an anal dildo, as you should be completely relaxed. Using plenty of lube and having a partner assist you is recommended. If you feel any discomfort or pain, it's essential to stop and reassess before continuing.
Pro Tip: Make sure the anal dildo has a flared base to prevent it from getting lost inside your anus.
If you already have a dildo you've enjoyed, you can use a soft measuring tape or a piece of string to measure its length and girth. Compare these measurements with potential new choices to help you gauge the fit.

Shape/Texture
- For g-spot or prostate stimulation, a curved dildo is a good choice.
- A tapered toy is suitable for anal play.
- Double-ended toys are great for double penetration.
- Ridges, bumps, or waves add extra sensations.
Base
If you’re planning to use your dong in a harness, you’ll want to be certain you have a toy with a suction cup base. This will prevent the dong from sliding out during play. Likewise, if you want to be able to ride the dong (shower play, anyone?) you’re going to want to have a suction cup to keep it from moving around.
If your dong will be inserted anally, make certain it has some kind of flared base that prevents it from going completely inside. If that happens, the dong may not come out which means a visit to the doctor and a play session ruined.

Material
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Silicone: Non-toxic, with a tight molecular structure, smooth and non-porous, making it easy to clean. However, ensure it's medical grade if desired as there's limited federal regulation.
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Thermoplastic elastomer (TPE) or Thermoplastic rubber (TPR): Commonly used, strong, flexible, but porous, so requires careful cleaning and storage. Use a condom for anal use if the toy will be used elsewhere.
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Soft Skin (Flanta Flesh, Cyber Skin, Siliskin, UR3, etc.): Mimics real skin, warms quickly, and is very flexible. Its porous nature demands extra cleaning and care, including using toy powder.
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Borosilicate glass: Shatterproof and easy to sanitize. Rigid, allowing for accurate and firm pressure, and can be used for temperature play.
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Polyvinyl chloride (PVC)/Jelly Rubber: Often combined with plasticizers like phthalates to increase flexibility. Soft and smooth but tacky, and porous. There are concerns about phthalates, and a condom is recommended. PVC toys are relatively inexpensive.
Care and Maintenance
Use only water-based lubricant (except with glass). Toy cleaner is the best for cleaning without damaging the material. Store toys in sugar sacks, anti-microbial containers, or clean pillow cases, and keep them separate to avoid melting or contamination. If using a pre-lubricated condom, ensure it's water-based.
Conclusions
Finding the perfect dildo may take some experimentation. Comfort and personal preference are key, and don't be afraid to try different sizes, materials, and textures to find what suits you best.
To recap, if you're a beginner, we recommend starting out with a smaller beginner dildo that's more similar to an average size penis. Or you could try our small realistic dildo, which is just 5.3 inches in size.
If you've used dildos before and feel like you're ready for something a little larger, you can try larger dildos (8" or more). Our most popular Wolf Tooth Anal Stimulation Heated Dildo is of this size.
What’s more, there’s no right or wrong size. Size is a personal choice, and there’s no wrong or right size.
Thanks for reading our dildo size guide!