Standard Tin Box Sizes and Dimensions: A B2B Buyer's Sizing Guide - Custom Tin Packaging Manufacturer

Choosing the right size is one of the first and most important decisions in a custom packaging project. Getting tin box sizes right protects your product, controls shipping cost, and makes the unboxing feel considered rather than loose or cramped. This B2B sizing guide explains the common formats, how capacity is specified, the tolerances to expect, and how to select the best size for your product.

How tin box sizes are specified

Tin boxes are measured by their external dimensions, usually in millimeters. Round tins are given as diameter × height; square and rectangular tins are given as length × width × height. Because the walls have thickness and the lid overlaps the base, the usable internal volume is always slightly smaller than the outside measurement, so it is best to confirm the internal cavity when fit is critical.

Round tins: diameter × height (e.g., 99 × 45 mm).
Square / rectangular tins: length × width × height (e.g., 150 × 100 × 45 mm).
Capacity: often quoted in milliliters or by the product weight it holds.

Common tin box shapes and typical sizes

Most projects start from a widely produced format because it keeps tooling cost low and lead times short. The reference sizes below are common starting points across the industry.

Shape	Typical footprint	Common heights	Popular uses
Small round	Ø 50–75 mm	15–50 mm	Balms, salves, samplers, mints
Medium round	Ø 85–110 mm	40–70 mm	Tea, coffee, candles, nuts
Large round	Ø 120–160 mm	60–100 mm	Gift sets, biscuits, confectionery
Square	80–150 mm side	40–90 mm	Tea, chocolate, gifting
Rectangular	100–220 mm long	25–80 mm	Pencils, cards, bars, multipacks
Slim pocket	80–95 × 55–60 mm	15–25 mm	Mints, gum, cards, small gifts

Explore format-specific options for round, square, and fully custom-shaped tin packaging.

Stock sizes vs. fully custom dimensions

There are two routes to your final size. A stock size uses existing tooling, so you pay only for custom printing and finishing; this is the fastest and most economical path and covers the majority of products. A fully custom size requires a new tool (mold) to create a unique diameter, footprint, or height. Custom tooling unlocks a distinctive shelf presence but adds tooling cost and lead time, and usually a higher minimum order.

Dimensional tolerances and fit

Tinplate is a formed metal, so finished boxes carry small manufacturing tolerances, typically a fraction of a millimeter on each dimension. When your product is a tight insert, a blister, or a foam tray, share the exact product dimensions early and request a sample so fit can be confirmed before mass production. Allowing a little headspace prevents rattling and makes lids easier to open and close.

How to choose the right tin box size

Work from the product outward:

Measure the product and any inserts, then add clearance for easy insertion and removal.
Consider presentation – a little negative space reads as premium; too much looks empty.
Check shipping – match the footprint to cartons and mailers to reduce dimensional weight and void fill.
Plan for retail – confirm the size fits shelves, pegs, or display units.
Balance cost – larger tins use more material and raise freight; size to the product, not beyond it.

If you are weighing tin against other materials at a given size, our comparison of tinplate vs. aluminum vs. plastic can help.

Frequently asked questions

What are the most common tin box sizes?

Medium round tins around 85–110 mm in diameter and square tins from 80–150 mm per side cover most tea, coffee, candle, and gift applications, which is why they are widely stocked.

How do I know the internal capacity of a tin?

Internal volume is smaller than the external size because of wall thickness and lid overlap. Ask for the internal cavity dimensions, or request a sample, when a precise fit matters.

Can you make a tin in a custom size?

Yes. A new tool can produce a unique diameter, footprint, or height. Custom tooling adds cost and lead time and typically requires a higher minimum order than a stock size.

What tolerance should I expect on tin box dimensions?

Expect small tolerances of a fraction of a millimeter per dimension. For tight inserts, confirm fit with a physical sample before production.

Not sure which size you need?

Send us your product dimensions and quantity, and our team will recommend the best stock or custom tin box size and provide a quote. For minimums and timelines, see our guide to MOQ, tooling and lead times, or contact us by email or WhatsApp to get started.

Standard Tin Box Sizes and Dimensions: A B2B Buyer’s Sizing Guide