Grid Gallery Wall: Calculate the Whole Frame Layout
Measure the grid as one rectangle
A grid gallery wall is easier to plan when you treat all the frames as one composition. Measure the outside of each frame, choose the gaps, then calculate the width and height of the whole group. Paper size alone cannot tell you how much wall the finished display will occupy.
A regular grid works well when you want the repeated edges to be part of the design. You can keep that structure while choosing images with different subjects. Start with the works you want to display, then decide whether they belong in a grid; an empty wall does not need to dictate the size of your collection.
Gather the dimensions that actually matter
For a straightforward grid, use frames with the same outside width and height. Record these five inputs:
| Input | What to record |
|---|---|
| Columns | The number of frames across |
| Rows | The number of frames down |
| Outside frame width | The complete left-to-right dimension of one frame |
| Outside frame height | The complete top-to-bottom dimension of one frame |
| Gap | The chosen space between neighboring outside edges |
In the example below, the same gap is used horizontally and vertically. If you choose different gaps, use the horizontal gap in the width calculation and the vertical gap in the height calculation.
Before ordering frames, check paper and frame dimensions. Two frames sold for the same paper size may still have different outside dimensions. Use the dimensions for the actual frame style you intend to display.
Calculate the complete footprint
For equal-size frames, the calculation is:
- Total width = columns × outside frame width + (columns − 1) × horizontal gap.
- Total height = rows × outside frame height + (rows − 1) × vertical gap.
There is one fewer gap than there are frames in a row or column. Three columns contain two horizontal gaps; two rows contain one vertical gap. Space around the outside of the group is a separate decision and is not included in these formulas.
A worked three-column, two-row example
Suppose you have six frames, each measuring 12 inches wide by 15 inches high on the outside, and choose 2-inch gaps. These are hypothetical frame dimensions and a chosen spacing example, not KEW print sizes or a universal hanging rule.
- Width: 3 × 12 + 2 × 2 = 40 inches.
- Height: 2 × 15 + 1 × 2 = 32 inches.

The frame placeholders are drawn to the example's proportions. They do not show a product's paper dimensions or a customer installation.
Make a layout note you can check twice
Choose a top-left reference point for the group. In this example, the outside left edges of the columns fall 0, 14 and 28 inches from that reference point. The outside top edges of the rows fall 0 and 17 inches below it.
| Frame position | Left edge from the group's left | Top edge from the group's top |
|---|---|---|
| Top left | 0 inches | 0 inches |
| Top middle | 14 inches | 0 inches |
| Top right | 28 inches | 0 inches |
| Bottom left | 0 inches | 17 inches |
| Bottom middle | 14 inches | 17 inches |
| Bottom right | 28 inches | 17 inches |
These positions locate frame outlines. They are not hook positions: the fittings on the actual frames determine where each hanger belongs.
Test the rectangle before marking hardware positions
Arrange the frames on the floor with the chosen gaps. Check which images you want beside each other, including the relationship between the top and bottom rows. Make paper templates matching the outside frame dimensions, then have someone hold them against the wall while you check the arrangement from the room's normal viewing position.
Look at the whole 40-by-32-inch rectangle in this example, including its relationship to nearby furniture, trim and switches. If it feels crowded, consider fewer frames or another wall before reducing the gaps until the works compete with one another.
For a smaller grouping, the separate guide to arrange one, two or three prints may suit the decision better.
Once the composition works, measure each frame's actual hanging fittings and follow the instructions for the chosen hardware and wall. Keep the overall dimensions and your reference point in the layout note. They make the arrangement easier to check when you replace a frame or move the display.