When it comes to sex toys, size is not everything and it shouldn't be but it does matter. Legally, size changes how much a toy can stimulate the sex worker's body and get her off. Sex toys should increase your pleasure and comfort, as well as safety. While the best dildo size does not have to be a huge or gigantic form you would expect to find in a fav shop, it should be appropriate for your anatomy, ability, and the kinds of pleasure you want.
In this guide, we will take you through the most elements related to sizing; from measurements to material, and discuss how fit and shape can help contribute to pleasure.
Understanding Dildo Measurements
In order to select an average dildo size that fits your requirements, you must first understand the main measurements. Dildos are typically described by total length, insertable length, girth, and occasionally diameter or width. Each measurement will indicate something different regarding how the toy will feel when in use.
- Total length is the total length of the dildo, from end to end. This isn't always the part that will go inside you.
- Insertable length is the length of the part of the toy that is meant to be inserted. This is arguably the most important measurement to consider for your comfort and satisfaction.
- Girth measures the circumference of the widest part of the shaft. While length is important, average dildo girth affects feelings of fullness and stretch much more than length does.
- Diameter (or width) is the straight line distance across the toy, which is also directly related to the girth.
Two dildos may be identical in length, but completely different in feel due to differences in girth or materials. All of these terms are important to understand, which is what we want to help you with.

How to Measure a Dildo Accurately
When you are online shopping, or looking at your own toy hoard, knowing how to properly measure your toys is helpful. To measure insertable length, use a ruler or soft tape measure to measure from the tip down to where the toy stops being usable, often at a handle, suction cup, or base.
To measure average dildo girth, use the soft tape measure to wrap around the widest part of the shaft. If you only know the diameter, you can calculate the girth by the formula: girth = diameter × π (3.14). This is useful when listing doesn't contain both measurements.
Learning how to interpret these specifications will help avoid confusion and make sure you choose a toy that suits your needs.
Visual Representation: Making Size Relatable
It’s not always easy to conceptualize what 4 inches of girth is, hence why it can be helpful to relate dildos to common items.
- A banana approximately measures 4.5 inches in girth, making it a good benchmark for medium best dildo size toys.
- A soda can measure in around 8 inches in girth - more intense and usually for experienced users.
- A lipstick tube is about 1 inch in diameter which also makes it relatable to many beginner dildos.
These comparisons create a real-world comparison and reduce surprises once the toy arrives.

Dildo Size Categories: Length and Girth
Dildo size charts can be categorized in size groups in terms of length and girth, which can help narrow down your possibilities based on how comfortable you feel and what your goals are.
By Insertable Length:
- Small (2.5–4 inches): Good for beginners, shallow, and warm-up activities.
- Medium (4–7 inches): Generally the most used size. On average gives a nice depth and the most average range for users in general.
- Large (8 inches plus): Great for those seeking deep penetration. This will require some prior experience as well as preparation.
By Girth:
- Small Girth (up to 3.5 inches): This allows for comfort to both new users and anal play.
- Medium Girth (3.5–5 inches): This gives a satisfying stretch without over stretching.
- Large Girth (5 inches plus): For accomplished users who find breadth satisfying and have some experience with wider toys.
Selecting a size is nothing to do with ego or fantasy. It's about matching the toy to what you, and your body, are comfortable with.
Choosing the Right Size for You
When you are choosing an average dildo size, your experience level, personal anatomy, and preferences will always be more important than any description. Here’s how to figure out what will suit you.
Insertable Length
The right length is subjective depending on person and intention. Beginners typically will start with 4 to 5 inches of insertable length, which allows for some exploration of sensation without being too much. If you are looking to stimulate your G or A spot, you’d likely be looking for something in the 6 to 8 inch range, and to plunge or experience something under the most depth, look for something above 8 inches — personally ensuring that your body is prepared for that.
Girth
Girth is often the engagement size that will have the most impact on how a dildo feels. Girth in the area of 3.5 inches or less can be considered beginner's best dildo size, for people who want to experience stretch and fullness, looking in the 4 to 5 inch range is a good option. A dildo over 5 inches in girth is considered a larger option and can bring incredible pleasure to experienced users. Lastly, the more girth you choose, usually the more lube you will need and slow play might be beneficial.
How Materials Change the Experience
Two toys of the same size can feel drastically different based on what they’re made of. Here’s how the material affects the sensation and perception of size.
- Silicone is flexible, soft, and body-safe. It’s forgiving in size, making even larger toys feel manageable. Dual-density silicone mimics the feel of real skin.
- Glass and metal are rigid and offer intense sensations. They can feel larger than they are because they don’t compress. They’re great for pressure play and temperature experimentation.
- Jelly, TPR, and PVC toys are soft but not always body-safe unless specified. These materials may have a strong smell or degrade over time. Always check for phthalate-free labeling.
If you're trying a new dildo size chart, silicone is often the safest place to start.

Matching Size to Use and Anatomy
The best size is subjective. The ideal size and whether to use your toy as a varying size depends on how and where it will be used. Here are ways to align the size of a dildo measuring to your body and the intended use:
- Vaginal play: Medium length and medium girth will suffice for most. G-spot stimulation can be enhanced with curves and texture.
- Anal play: Start small. Choose slim and tapered toys with a flared base for added safety.
- Strap-on play: Be considerate of the comfort for both wearers and receivers. Ideally a more moderate size is best for shared play.
- Prostate play: Look for curved, generally best dildo for women, designed to target the P-spot.
- Stretch play: For people seeking fullness, there are wide toys to find and gradually work to using width, just remember such toys have to be safe and flexible.
Furthermore, everybody can have their own internal anatomy. Listen to your body and don't force a larger size based on what someone else is using.
How to Explore Sizes Safely
If you're new to looking for the best dildo for women, then go slow. Here are some tips to help keep it safe and fun:
- Work your way up gradually over time.
- Use lots of lube, especially with thicker or longer toys.
- Choose flexible materials if you're trying new shapes.
- Listen to your body-discomfort or hesitation means stop.
Make sure that you are giving your body time to adjust and avoid injury through stretching slowly, warm-up toys, or playing with different shapes.
Common Sizing Mistakes to Avoid
Purchasing the wrong size can lead to frustration or discomfort. Don't make these mistakes:
- Thinking the total length of the product is the same as the insertable length.
- Underestimating how much average dildo girth will have an affect on sensation.
- Choosing a size based on fantasy and not experience.
- Not using material type as a consideration when sizing.
- Forgetting to pick lubes or warm-up.
Having these kinds of common slip-ups on your mind can save you time, money, or disappointment.
Signs You Might Be Using the Wrong Size
At times your body will alert you that the toy is not quite right; here are some red flags to look out for:
- Discomfort or pain during and/or after use.
- Difficulty inserting the toy or staying in place (would want to check as well with accessories/wearable toys and the correct chunk to use or size).
- Not feeling satisfied or under-stimulated.
- You are feeling hesitation or anxiety mentally about using the toy.
Your size should leave you feeling satisfied, curious, and excited for more play and exploration - not tense or disappointed.
Conclusion
There isn’t a one-size-fits-all dildo measuring. What matters is how the toy feels for you, in your body, your mind, and your heart. As you explore your body or the body of someone you care about, take note of your comfort level, your confidence, and your curiosity.
Take your time, be mindful of your needs, and don't hesitate to try what feels right. The average dildo size you prefer is not what is trendy, or labelled, it is what feels right for you.