KALLAX Shelf unit, white, 30 1/8x30 1/8″
+3½″ margin
All items that fit a Toyota Yaris 2018
Will fit in a ?
No, it won't fit.
It will not fit in this setup: BILLY Bookcase, white, 31 1/2x11x79 1/2″ is too large for a Toyota Yaris 2018 with seats up.
Fit Details
With seats up, This package will not fit in this setup. The blocker is cargo length, and you're short by 30⅛″ even with diagonal loading. We're about 95% confident in this estimate.
BILLY Bookcase, white, 31 1/2x11x79 1/2″
Box: 81¼″ × 11¾″ × 5″ · 88 lb 1 oz
Based on IKEA US (United States).
Package dimensions last checked and updated on Oct 21, 2026
Also on IKEA:United Kingdom
Package
Status
Limiting factor
Best orientation
Package #1
81¼″ × 11¾″ × 5″
Status:30⅛″ short
Limited by
Limiting factor:Cargo length
Best orientation:Diagonal
Vehicle limits
Opening width / height above sill
34⅝″ / 27½″
Cargo width / height
39¾″ / 34¼″
Cargo length seats up / down
26¾″ / 52⅜″
Loading sill height
26¾″
Toyota Yaris 2018
Measurements last checked and updated on Oct 21, 2026
Helpful tips
Use these loading tips to improve your chances of fitting BILLY Bookcase, white, 31 1/2x11x79 1/2″ in Toyota Yaris 2018.
Use available cargo length
Use seats down if available to gain cargo length.
Load diagonally first
Load diagonally first, then straighten once inside.
Try fitting alternatives
Check the Similar items that fit section for safer alternatives.
Alternatives that fit in Toyota Yaris 2018
Ranked by fit margin and package-dimension similarity. This improves as we index more items.
About the Toyota Yaris 2018 boot
Everything you load into the Toyota Yaris 2018 boot has to pass an opening 34⅝″ wide, with 27½″ of clear height above a 26¾″ sill. Past it, the space opens up: the floor is no less than 39¾″ wide, it lies 6¾″ below the sill, and the boot rises 34¼″ above that floor. The floor is only 26¾″ long with the rear seats up, and folding them adds 25⅝″ to reach 52⅜″. Short, chunky boxes suit it, and a few boxes longer than 26¾″ fit with the seats up, turned on their side. So measure every box against those two opening figures first.
About the BILLY Bookcase, white, 31 1/2x11x79 1/2″ package
The white BILLY is packed in one long, narrow box: 81¼″ × 11¾″ × 5″. It weighs 88 lb 1 oz, and at that length you want a second person to carry it. Loaded end first, it asks little of the opening: only room for its 11¾″ by 5″ end. Lying flat and straight, it needs 81¼″ of floor for the longest side. On its side and at an angle, it needs less floor but more width at the opening, and the verdict on this page shows whether that works in your boot. Lift it level between the two of you and keep it that way until the whole box is in the boot.
Frequently asked questions
Find quick answers about fit for BILLY Bookcase, white, 31 1/2x11x79 1/2″ in Toyota Yaris 2018, including seats up vs seats down, limiting factor, best orientation, and package-by-package margins.
Will BILLY Bookcase, white, 31 1/2x11x79 1/2″ fit in Toyota Yaris 2018?
No. With seats up, it is short by 30⅛″ at Cargo length, even with diagonal loading.
What is the tightest part?
The limiting factor is Cargo length, with -30⅛″ margin in seats up.
Why does it not fit?
The blocker is Cargo length: with seats up, the box is 30⅛″ bigger than the space there.
Can I load it diagonally?
Yes, diagonal is the best orientation for this check, with -30⅛″ around the limiting point.
How tight is this fit?
This result is in the clear no-fit band (-30⅛″ at Cargo length).
Does it fit with seats up or seats down?
Seats up: No (-30⅛″). Seats down: No (-16⅝″). Default selection follows YES > MAYBE > NO.
What do YES, MAYBE and NO mean here?
YES means there is at least 2⅜″ to spare at the tightest point, in the best way the box can go in. MAYBE means it fits on paper, but with less than 2⅜″ to spare, so trim, the parcel shelf or the loading angle can decide it. NO means the box is bigger than the space at its tightest point, whichever way it goes in. Every margin on this page is that real gap: the car's measurement minus the box's.
What should I do instead?
Use the Helpful tips & alternatives section to choose a smaller item, different orientation, or split-load plan.
Which loading orientation works best?
Diagonal is the best orientation for this result in seats up.
How confident is this result?
Confidence is 95 out of 100 based on available dimensions and margin tightness.