Display mount size calculator
The display mount size calculator gives the finished size of a mount with an even backing margin around a paper item.
Result and working notes
Use 100% print scaling for this record. The sketch is not life-size and must not be used as a cutting pattern. Check measurements against the real materials.
Finished backing width: 24 cm
This produces a size note rather than a printable mount template. Cut and check a sample before preparing a batch.
| Finished backing width | 24 cm |
| Finished backing height | 32.7 cm |
| Area | 784.8 cm² |
| Additional backing area | 161.1 cm² |
Free to use. A free account saves, downloads and prints your results, with no card.
Add the chosen border twice to the item width and height, then compare the mount area with the original area. Adjust the numbers and check the live result before printing your measurement notes.
Last reviewed 3 October 2026.
Work out your display
- Measure the board, paper or existing item. Choose a single unit that matches the fields.
- Set paper width (cm), paper height (cm), mount margin on each side (cm).
- Compare the live totals with the stated assumptions. Use a free account to download or print the measurement sheet.
How the estimate is calculated
Add the chosen border twice to the item width and height, then compare the mount area with the original area. This produces a size note rather than a printable mount template. Cut and check a sample before preparing a batch.
This utility supports the measuring and preparation work around a display. It provides plain quantities and dimension notes; custom lettering, bunting artwork, decorations and finished themed packs belong in the display maker.
Every result comes from the values you enter, with no model request or invented price.
Practical questions
How does display mount size calculator work?
Add the chosen border twice to the item width and height, then compare the mount area with the original area.
What should I check before using the result?
This produces a size note rather than a printable mount template. Cut and check a sample before preparing a batch. Start with measured values for paper width (cm), paper height (cm), mount margin on each side (cm).
Is this display preparation tool free?
Yes. You can calculate and preview without signing in. Saving, downloading and printing need a free account, with no card.
Will this produce a finished display pack?
No. It prints calculation notes for display mount size calculator, rather than a design template or decorative artwork. When you want a finished board, lettering, bunting or decorations, the WallKiwi display maker designs them for you.
Tools for the next step
- Layout and positioningCentred display position finderFind the left and top offsets for a rectangular item placed in the centre of a larger board. Free in your browser, with printable notes you can save.
- Layout and positioningEven display gap calculatorSpread equal-width items along a measured span with the same gap at both ends and between items. Free in your browser, with printable notes you can save.
- Layout and positioningEqual display column plannerDivide the inner board width into equal columns with consistent gaps. Free in your browser, with printable notes you can save.
- Layout and positioningEqual display row plannerPlan evenly sized horizontal rows on a noticeboard, with top and bottom margins and gaps. Free in your browser, with printable notes you can save.
Cite this tool
APA 7
WallKiwi. (2026, October 3). Display mount size calculator. https://wallkiwi.com/tools/display-mount-size-calculator
Harvard
WallKiwi (2026) Display mount size calculator. Available at: https://wallkiwi.com/tools/display-mount-size-calculator.
Ready to make your display?
Describe your display in a sentence and WallKiwi designs the board, lettering, bunting and cut-outs to match, ready to print on A4. Designs use credits, and a free account includes some each month.