ItemFits Research · living dataset
ItemFits Fit Check Dataset & Statistics
Aggregated statistics from every fit decision the ItemFits checker has recorded: what people try to fit, where they need it to fit, how often the answer is no, and how close the fits are. These figures describe the questions people brought to ItemFits, not furniture in general.
Data through · Updated as new data is validated · Publisher: ItemFits LLC
In one sentence each
Key statistics
Each line is a complete, citable statement: figure, population, window. Definitions are linked.
- Across ItemFits fit checks, 20% of fits had less than 2 inches to spare (1,518 of 7,736 fits with a measured clearance, March 9, 2026 to September 27, 2026). Definition #
- Across ItemFits fit checks, the median clearance of a fit was 6.4 in (163 mm, across 7,736 fits with a measured clearance), March 9, 2026 to September 27, 2026. Definition #
Current dataset
What the dataset contains
Each field began being recorded on a different date, so each total below states its own window. Internal test accounts are excluded from fit decisions, conversations, questions and accounts.
Fit outcomes
More answers are won’t fit than fit
A definite answer is a fit or a won’t fit. Requests for a missing measurement are counted as fit decisions but never as answers, so they are shown separately and left out of every share of answers.
| Outcome | Fit decisions | Share of definite answers | Share of all fit decisions |
|---|---|---|---|
| Fits | 6,380 | 37% | 32% |
| Tight fit | 986 | 6% | 5% |
| Very tight fit | 573 | 3% | 3% |
| Likely fits (hedged) | 417 | 2% | 2% |
| Fits tilted or with the lid open | 27 | 0% | 0% |
| Likely won’t fit (hedged) | 175 | 1% | 1% |
| Won’t fit | 8,757 | 51% | 44% |
| Asked for a missing measurement | 1,665 | not an answer | 8% |
| Other (unknown outcome, dimension lookup) | 813 | not an answer | 4% |
| All fit decisions | 19,793 | 17,315 definite | 100% |
Shares are rounded to whole percentages and may not add to exactly 100. Read the study of what stops things fitting for the reasons behind won’t-fit answers.
Month by month
Fit decisions and conversations per month
The first month of the fit-decision record and the current month are partial and drawn hatched.
Fit decisions per month
Values (fit decisions)
| Month | Fit decisions |
|---|---|
| March 2026 (partial) | 345 |
| April 2026 | 756 |
| May 2026 | 1,300 |
| June 2026 | 2,226 |
| July 2026 | 5,139 |
| August 2026 | 5,420 |
| September 2026 (partial) | 4,607 |
Conversations per month
Values (conversations)
| Month | Conversations |
|---|---|
| March 2026 | 848 |
| April 2026 | 885 |
| May 2026 | 1,259 |
| June 2026 | 2,941 |
| July 2026 | 6,209 |
| August 2026 | 6,767 |
| September 2026 (partial) | 5,972 |
What people check
Sofas, mattresses and TVs lead
Item names are grouped into families by keyword. Names too generic to place (“item”, “stuff”) are left out rather than guessed, and families with fewer than 10 fit decisions are not listed.
Most checked item families
Fit decisions grouped by item family. 2,272 item names matched no family and are not shown. Aug – Sep 2026 · September partialSource: ItemFits fit-check records · How this is counted
Look up the sizes behind these checks in the furniture dimensions guide, mattress sizes and appliance dimensions, or read the study of the most-checked big items.
Where people need things to fit
Vehicles, doorways and routes
Every fit decision is about one kind of space. Each checker route maps to exactly one space type.
| Space type | Fit decisions | Share |
|---|---|---|
| Vehicles | 10,984 | 55% |
| Doorways | 2,511 | 13% |
| Routes and hallways | 2,203 | 11% |
| Rooms | 1,687 | 9% |
| Boxes and containers | 957 | 5% |
| Elevators | 699 | 4% |
| Stairs | 348 | 2% |
| Other | 404 | 2% |
Check your own space: doorways · stairs · hallways and corners · elevators · rooms · boxes and containers.
Vehicle fit
Most fit checks are about a vehicle
The checker tests a vehicle’s cargo opening and its cargo space as separate constraints, for each seat configuration in the catalog.
Most picked vehicle models
Picks of a specific model on the vehicle grid. Counted from June 2026, after a recording gap in May 2026. Jun – Sep 2026 · September partialSource: ItemFits vehicle-grid picks · How this is counted
Vehicle picks by body style
Out of 3,569 vehicle picks with a body style. Jun – Sep 2026 · September partialSource: ItemFits vehicle-grid picks · How this is counted
Compare cargo areas in the vehicle cargo dimensions or check an item against a specific model in the vehicle fit checker.
Clearance
How close the fits are
Clearance is the room to spare at the tightest point, in the orientation the checker chose. Only fits with a recorded clearance are counted.
A tape measure read to the nearest quarter inch leaves little margin at these clearances. See how to measure accurately and the clearance formulas.
Where people ask from
Mostly the United States, not only
Locations are recorded as country and region only, never a precise location. A request is one turn of a conversation, so these shares are not counts of people.
Top countries after the US
Requests to the fit checker by country. A request is one turn of a conversation, so this is not a count of people. Jul – Sep 2026 · September partialSource: ItemFits request locations · How this is counted
Not yet published
What we measure but do not publish yet
A figure built on a field that is recorded for only part of the data would describe that part, not the whole. These breakdowns stay unpublished until the instrumentation behind them is complete.
Common failure points (opening, turn, height, width, depth)
The constraint that stopped an item is recorded on 29% of won’t-fit answers so far. A breakdown built on that share would describe the recorded few, not the whole, so it stays unpublished until coverage passes 80%.
Dimension confidence (measured, manufacturer, catalog, standard, estimated)
Where each size came from is recorded on 47% of fit decisions so far. We will publish the split once it is recorded on at least 80%.
Vehicle opening vs. interior failures
The checker tests the cargo opening and the cargo space separately, but the result does not yet record which of the two failed.
Vehicle seat configuration
Every cargo configuration in the vehicle catalog records its seat state, but the configuration an answer used is not yet saved with every vehicle pick, so a seat-state split would leave part of the picks out.
Retail storefront metrics
Fit checks inside retailers’ stores, add-to-cart after a check, and returns need more live stores before a figure means anything. See the methodology page.
Cite and download
Use the numbers, link the source
Download the data
Every figure on this page, one row each, with its window, population and definition link.
Reuse terms
Free to reuse with attribution to ItemFits and a link to the source page (CC BY 4.0). Licence: Creative Commons Attribution 4.0 (CC BY 4.0). Please state the window shown next to the figure you quote.
Definitions: How ItemFits data is counted. Point-in-time editions with commentary: Quarterly reports. Sources: ItemFits fit-check records, itemfits conversation records, itemfits account records, itemfits request locations and itemfits vehicle-grid picks. Mar – Sep 2026 · September partial