The brief: paper, craft supplies, and a daily bag
This is an illustrative planning exercise, not a report from a real household. It uses a cabinet with two identical shelves, each 80 cm wide, 35 cm deep, and 30 cm high. The task is to store current craft supplies, occasional papers, and a bag used every weekday.
The container under consideration is 24 cm wide, 30 cm deep, and 20 cm high at its largest outside dimensions. We will use 1 cm of space at each outside edge, 1 cm above the container, and a 1 cm gap between containers. These are example allowances, not universal recommendations.
The useful question is not just ‘how many fit?’ It is ‘which arrangement lets these particular objects come out and go back without creating a second task?’ The arithmetic helps narrow the choice. The pattern of use makes the final decision.
Layout A: fill both shelves with containers
Subtract the two outside width allowances: 80 − 2 = 78 cm. Three containers and two gaps occupy 24 + 1 + 24 + 1 + 24 = 74 cm. They therefore fit across with 4 cm of additional unused width after the allowances.
In depth, 35 − 2 = 33 cm is available. One 30 cm container fits, leaving 3 cm of additional unused depth. A second row would need 61 cm including its gap, so it does not fit. In height, 30 − 1 = 29 cm is available and the 20 cm container fits beneath it.
That gives three containers per shelf, or six across the two shelves. It is a tidy numerical answer. But the bag now needs either its own container or another destination. If the bag is repeatedly taken out of a box and then put back into that box, the arrangement has added a daily action.
The papers may work well in a labeled container. The craft supplies may also benefit from moving together. The bag is a different shape and follows a different routine. Equal containers do not necessarily mean equal usefulness.
Layout B: turn every container
Turn the container on its base so that it is 30 cm wide and 24 cm deep. Two containers and one gap need 61 cm of width. Three would need 92 cm and therefore cannot fit within the 78 cm usable width.
One row remains the limit because two 24 cm depths plus the gap need 49 cm. The result is two containers per shelf, with 17 cm of additional unused width and 9 cm of additional unused depth after allowances.
Why consider a smaller count? A handle might be on the side that now faces forward. A broad opening might make the craft supplies easier to find. The orientation that holds fewer boxes can still make each box more convenient.
The planner cannot infer those features from width and depth alone. It compares the geometric grids. You need to inspect the actual container to judge its handle, opening, and removal motion.
Layout C: reserve space for the daily object
Keep three containers on one shelf for occasional papers and grouped supplies. On the second shelf, use two containers in the original orientation and leave the rest of the space open.
Two 24 cm widths and one 1 cm gap occupy 49 cm. Within the 78 cm usable width, that leaves 29 cm beyond the group. If you reserve another 1 cm between the group and the bag zone, the bag zone has 28 cm of width. The bag must still fit the available depth and height and be easy to remove.
This is a manual mixed-use layout. The calculator does not search arrangements that combine containers and an open bag space, so the reserved zone needs its own check. Use the bag when it is packed as it normally is, including straps and protruding contents. Do not measure only an empty, flattened bag.
The result holds five containers instead of six, plus a dedicated daily-bag area. That may better match the brief. If the bag is too wide, reduce the container group further or find another location; do not squeeze it in just to preserve a count.
Compare the layouts on the same terms
| Layout | Container count | Daily-use trade-off |
|---|---|---|
| A: original orientation on both shelves | 6 | Highest of these counts; no dedicated open bag zone. |
| B: rotated orientation on both shelves | 4 | May improve handle access; leaves more unused space. |
| C: one full shelf, one mixed-use shelf | 5 | Reserves an open zone for a bag if its packed dimensions fit. |
Do not compare a fully packed version of one option against an empty version of another. Test with the same ordinary contents. Otherwise the comparison rewards whichever example happens to be less full.
Also consider weight and stability separately. These calculations are about space. They do not establish a safe shelf load or replace the cabinet maker’s instructions.
Make the decision with a physical trial
Mark the proposed footprints with paper, then use empty boxes or existing containers where possible. Try taking the craft supplies to the table and returning them. Pull out the paper group without disturbing the bag. Remove the bag as if you were leaving in a hurry.
Look at the doors and hinges during the trial. The example assumes the measured usable opening accepts each container. A door frame can invalidate an otherwise correct internal fit. Recheck the actual opening before purchasing anything.
For this brief, Layout C is a reasonable first trial because it gives the daily object a direct return path. It is not a universal winner. If the bag already has a convenient home by the door, Layout A may be appropriate. If the handles determine access, Layout B deserves a look.
The best result is a decision you can explain in terms of use: ‘This space stays open because the bag leaves every morning.’ That explanation is more durable than a goal of filling every centimetre.
Try your own dimensions in the storage-fit planner, then add the real-world checks from the measuring guide.
Prepared with AI assistance. Examples are illustrative unless explicitly identified otherwise. The owner has reviewed this article. Read our editorial approach or report a correction.