Calculator

Tumbler Wrap Size Calculator

Measure your tumbler instead of trusting a generic preset. This calculator uses diameter and height inputs to estimate the printable wrap.

Use this as a planning guide, then measure the actual blank before pressing or printing.

Rule and assumptions

Average diameter = (top diameter + bottom diameter) / 2. Wrap width = pi x average diameter + seam overlap. Wrap height = printable body height.

The formula is a planning estimate for straight or lightly tapered cups.
Strong taper and handles may require a curved template or split layout.
Printer scaling and cup taper should be checked with a paper test wrap.

Use this tool for

Calculating custom tumbler wrap size from top and bottom diameters.
Estimating cup wrap width with seam overlap.
Checking tapered tumbler measurements before printing.
Creating a copyable sublimation template result for a test wrap.

Worked example

Inputs

Unit: inches
Top diameter: 2.95 in
Bottom diameter: 2.75 in
Printable body height: 8.20 in
Seam overlap: 0.25 in
Output mode: one-piece wrap

Result

The calculator returns a wrap width around 9.20 in and a wrap height of 8.20 in.

When to use this

Use this when the tumbler model does not match a common preset or the exact cup dimensions are available.

What to check before pressing

Confirm you entered diameter, not circumference, and print a paper wrap before sublimating the final design.

Quick reference chart

Use case	Starting point	Check before pressing
Straight cup	Use average diameter	Verify circumference
Tapered cup	Measure top and bottom	Consider split layout
Handled cup	Use handle-safe panel	Do not wrap through handle

Common mistakes

Entering circumference in a diameter field.
Using zero or negative overlap values.
Ignoring taper when top and bottom diameters differ.