Choosing the Right Diecast Scale

When you're getting into diecast collecting, one of the first—and most important—decisions you'll make is choosing the right scale.

It may feel overwhelming at first.

What does 1:18 mean?
Is 1:64 too small?
How do you know which one fits your collection?

Let's break it all down so you can pick the perfect size for your diecast collection.

What is Diecast Scale?

Diecast scale is the size ratio between the model and a real vehicle.

A 1:18 scale means the model is 18 times smaller than the real thing. So the smaller the second number, the bigger the model!

For example:

-A 1:18 model of a car that's 15 feet long in real life will be about 10 inches long.

-A 1:64 version of the same car? Just 3 inches.

It’s not just about size. Scale also affects detail, weight, price, and display options.

What are the Most Common Diecast Scales?

1:18 Scale

Big and detailed. These cars are usually 10–12 inches long. Great for showcasing detailed interiors, engines, and even opening doors or hoods. They take up more space and deliver maximum realism.

1:24 Scale

Still highly detailed, but more compact—around 6.5–8 inches. Easier to collect in bulk and less expensive than 1:18 models.

1:43 Scale

Popular globally. About 3.5–5 inches. These models strike a balance between size and detail, making them a favorite among space-conscious collectors.

1:64 Scale

Small and affordable—around 2.5–3 inches. Hot Wheels and Matchbox cars are this size. Perfect for younger collectors or anyone short on space.

Why We Love Diecast Collecting

Why Scale Matters: Detail, Space & Budget

Choosing the right scale isn’t just about looks. It’s about how you want to collect.

Detail

Larger scales like 1:18 offer rich details—paint textures, working parts, realistic interiors. Smaller scales skip some of that to save space and cost.

Space

Have limited shelf space? A 1:64 collection fits dozens of cars in a single case. But if you’ve got a full display cabinet, you might love the presence of a few 1:18 models.

Budget

Larger models generally cost more, not just to buy but to maintain and store. Smaller models are budget-friendly and easier to replace or upgrade.

Want display inspiration? Check out our tips for building a killer diecast display case.

How to Match Scale to Your Collecting Goals

Casual Collectors

If you're just starting, 1:64 models are a great way to explore brands and styles without spending big.

Detail Lovers

Go for 1:18 or 1:24. These scales show off every feature—from leather seats to brake lines.

Limited Space

1:43 is your friend. It’s compact yet still displays beautifully.

Train Set Builders

Look at 1:87 scale (HO gauge). Perfect for model train layouts. These models aren’t just cars—they’re scenery.

Scale vs. Gauge: Understanding the Difference

Scale measures relative size, while gauge often relates to train modeling and diorama setups. For example:

-HO scale (1:87) is commonly used with model trains.

-O scale (1:48) is bigger and often paired with diecast trucks and accessories.

So if you're planning a display with trains, your diecast scale should match the train gauge.

Want a deep dive into scale and gauge differences? Read this great breakdown from OnAllCylinders.

Specialty Scales for Unique Interests

Diecast isn’t one-size-fits-all. If you’re into hyper-detail or niche collecting, consider:

1:12 or 1:8 Scale

Huge, heavy, and incredibly detailed. These are centerpiece models. Expensive, but stunning. Perfect for display cases or store showrooms.

1:87 or Smaller

Used mainly in train layouts or architectural displays. Often plastic-based but still true to real-car designs.

1:50 Scale

Popular for construction equipment and commercial trucks. A favorite among industrial collectors.

Need more detail on lesser-known scales? EverythingDiecast offers a helpful guide.

Ready to Choose Your Perfect Scale?

Picking the right diecast scale is all about knowing your space, your budget, and your passion.

If you're ready to grow your collection, check out our full selection of models in 1:18, 1:24, and 1:64. Every model has its story. Browse now at Fishwheels to write yours!