Laminate Layout Calculator

Q: What is the minimum width for the last row of laminate?

Most makers ask for at least 50 mm, and many fitters prefer a third of a board or more. Below that, cut the first row down too so both edge rows match.

Q: Do I cut the tongue off the first row?

Yes. Against the starting wall, cut the tongue off — and cut the row to width if needed — so the clean edge faces the wall and the groove faces the room.

Q: Which way should laminate run?

Usually along the longest wall or towards the main window; in a narrow hallway, lengthways. Set the laying direction in the calculator to match.

Q: Does this work for vinyl and engineered wood?

Yes. Pick the board type and size; the row layout uses the face width and the expansion gap you enter.

Q: What if my room isn’t square?

Measure the width at both ends and enter the second one. The last row stays straight and the first row tapers between the two widths.

Laminate layout calculator

A last row of laminate that comes out as a 10 mm sliver won’t click together and looks wrong. Enter the room width, board width and expansion gap to see whether to cut down the first row, and by how much, so the first and last rows match.

Row	Width	First piece	Last piece	Offcut to next row
1	193 mm	1,380 mm	1,220 mm	160 mm
2	193 mm	690 mm	530 mm	850 mm
3	193 mm	690 mm	530 mm	850 mm
4	193 mm	690 mm	530 mm	850 mm
5	193 mm	690 mm	530 mm	850 mm
6	193 mm	690 mm	530 mm	850 mm
7	193 mm	690 mm	530 mm	850 mm
8	193 mm	690 mm	530 mm	850 mm
9	193 mm	690 mm	530 mm	850 mm
10	193 mm	690 mm	530 mm	850 mm
11	193 mm	690 mm	530 mm	850 mm
12	193 mm	690 mm	530 mm	850 mm
13	193 mm	690 mm	530 mm	850 mm
14	193 mm	690 mm	530 mm	850 mm
15	193 mm	690 mm	530 mm	850 mm
16	85 mm	690 mm	530 mm	850 mm

How wide should the first row of laminate be?

Start with the width you have to fill: the room width across the rows less the expansion gap at both walls. Divide it by the face width of a board — the visible width, without the tongue. The whole number is how many full rows fit, and the remainder is the last row. If that remainder is at least a third of a board and not under 50 mm, start with a full board and cut down only the last row.

If the remainder is too narrow, take it together with one full board, halve the total and cut both the first and the last row to that width. The floor then looks balanced from both walls, and the last row is wide enough to click in and stay down.

Avoiding a thin last row

A sliver at the last wall will not lock, breaks easily and looks like a mistake. It happens when the room is just over a whole number of boards wide. The Row layout card shows the first and last row before you open a pack, and the narrowest row is yours to set — 50 mm or a third of a board by default. The packs, underlay and skirting come from the laminate flooring calculator further down.

The row layout formula

D = width − 2 × gap; n = ⌊D ÷ w⌋; r = D − n × w; if r < r_min: first = last = (r + w) ÷ 2

w is the board face width and r_min the narrowest row you accept (50 mm or a third of a board, whichever is larger). A balanced layout has n + 1 rows: the first, n − 1 full rows and the last.

Worked example

Room 2.95 m across the rows, 10 mm gap at each wall, 193 mm boards.
D = 2950 − 20 = 2930 mm; 2930 ÷ 193 = 15.2 → 15 full rows and 35 mm left over.
35 mm is under 64 mm (a third of a board), so balance: (35 + 193) ÷ 2 = 114 mm for the first and the last row — 16 rows: 114 mm, 14 full rows, 114 mm.
A 3.00 m room instead leaves 85 mm: no cut needed at the start, and the last row is 85 mm.

Walls that aren’t parallel

Measure the room width at both ends of the rows. If the two differ, keep the last row the same width all along and taper the first row instead, scribing it to the wall. Enter the second width and the calculator gives the first-row width at each end, and warns you if one end gets too narrow or wider than a board.

Where to start laying laminate

Usually along the longest straight wall, with the rows running towards the main window or along the longest view. Start where the first row is easiest to keep straight. If the first row needs cutting down, cut the tongue side off so the clean edge goes against the wall and the groove faces the next row. If the floor runs through a doorway into another room, check the row lines there before you start.

Staggering end joints (row plan)

The row plan lists every row: its width, the length of the first and last piece and the offcut carried to the next row. End joints are kept at least 300 mm apart for laminate and 200 mm for vinyl, and offcuts shorter than that are not reused. The same layout works for the vinyl flooring calculator.

Frequently asked questions

What is the minimum width for the last row of laminate?

Most makers ask for at least 50 mm, and many fitters prefer a third of a board or more. Below that, cut the first row down too so both edge rows match.

Do I cut the tongue off the first row?

Yes. Against the starting wall, cut the tongue off — and cut the row to width if needed — so the clean edge faces the wall and the groove faces the room.

Which way should laminate run?

Usually along the longest wall or towards the main window; in a narrow hallway, lengthways. Set the laying direction in the calculator to match.

Does this work for vinyl and engineered wood?

Yes. Pick the board type and size; the row layout uses the face width and the expansion gap you enter.

What if my room isn’t square?

Measure the width at both ends and enter the second one. The last row stays straight and the first row tapers between the two widths.

All guides →

Add this calculator to your site

Run a tile or flooring shop, a building firm or a DIY blog? Put this calculator on your own page for free: one line of code, no sign-up and no ads inside the widget.

Get the embed code →

Last updated 19 October 2026

Project settings

Room geometry

Row layout

Panels

Extras

Skirting

Waterproofing (wet areas)

Primer