Plot to Square Metres — 60 × 120, 50 × 100, and why there is no "the plot"
A 60 × 120 ft plot is 668.9 m²; 18 × 36 m is 648. Enter length × width or pick a convention: m², ft², acres, and exact plots per acre against the quoted six.
A Nigerian plot is a pair of dimensions somebody agreed on, not a unit. 60 × 120 ft is 668.9 m²; the same plot written as 18 × 36 m is 648. Enter your own length and width, or pick a convention, and this page converts to square metres, square feet, acres and hectares, and says how many of that plot go into an acre without rounding to six.
The question behind "plot to square meter" is usually "my land is 60 by 120, how many square metres is that". That one has an exact answer: 60 × 120 ft is 7,200 ft², and a square foot is 0.09290304 m² by definition, so the plot is 668.90 m². Nothing in that chain is a convention except the choice of 60 and 120.
The trouble starts when the word plot is used on its own. Lagos practice says 60 × 120 ft and, in the same breath, 18 × 36 m and 648 m². Those are not the same rectangle: 18 m is 59.06 ft, and the metric plot is 3.1% smaller than the foot plot. Older and northern layouts run 50 × 100 ft (written 100 × 50 just as often), which is 464.5 m², and the metric restatement of that one is 15 × 30 m, 450 m². Estates sell 500 and 600 m² and call each a plot. "Six plots to an acre" and "fifteen to a hectare" are true of none of them exactly.
So this page asks which plot before it converts, grades each figure by what stands behind it, and refuses to convert a plot with no dimensions attached. The survey plan and the Certificate of Occupancy carry the area in square metres or hectares; that figure is the record, and every number here is a way of getting to it or checking it.
| Square metres | — |
|---|---|
| Square feet | — |
| Acres · hectares | — |
| Your rectangle | — |
| In plots of the chosen size | — |
| One such plot | — |
| Plots per acre · per hectare, exact | — |
| The round number people quote | — |
| Same land in the other plots | — |
| How good is this figure | — |
A plot is not a unit. It is a pair of dimensions that a layout, an estate or a market agreed on, and the pair changes. The Lagos plot is quoted as 60 × 120 ft and as 18 × 36 m in the same guides, usually in the same sentence, as if they were one figure. They are not: 60 ft is 18.288 m and 120 ft is 36.576 m, so the foot plot is 668.90 m² and the metre plot is 648, a difference of 20.9 m² or 3.1%. On a plot priced per square metre that gap is real money, and on a survey plan it is the difference between a figure that reconciles and one that does not. This page carries both and marks both as convention, because no instrument read for this page fixes either. Which one your land is comes from the survey plan, not from the phrase "standard plot".
"Six plots to an acre" is arithmetic that holds for one plot size, and even for that one it is short. An acre is 43,560 ft². Six plots of 60 × 120 ft are 6 × 7,200 = 43,200 ft², which leaves 360 ft² of the acre unaccounted for; the exact figure is 43,560 ÷ 7,200 = 6.05. On the metric plot of 648 m² an acre of 4,046.86 m² holds 6.245 plots, and on a 50 × 100 ft plot it holds 8.712. "Fifteen plots to a hectare" behaves the same way: 15 × 648 = 9,720 m², 280 m² short of the hectare, and 15 × 668.9 = 10,033.5, over it. The exact counts are 15.43 on the metre plot and 14.95 on the foot plot. Where a layout says an acre is six plots, that is a statement about the roads and the setbacks the surveyor left between them, not about the acre.
The record is in square metres, and the plot is only the conversation. The Weights and Measures Act, Cap W3, section 1(1), makes the metre the unit of length in Nigeria, and a survey plan prepared for registration states the area of the parcel in square metres or in hectares. The Land Use Act says nothing about the size of a plot; the one area figure it fixes for a holding is in section 34(5)(a), where undeveloped urban land held at the commencement of the Act continues to be held only as to "one plot or portion of the land not exceeding half of one hectare in area". That is a ceiling of 5,000 m², about seven and a half Lagos plots, and it is not a plot size, so this page declines to convert "half a hectare" as one. The practice of writing the survey plan in square metres is stated here as what happens, not as a rule this page read: the Lagos planning regulations were not reachable when this page was written and are not cited.
The 50 × 100 plot and the 100 × 50 plot are the same plot, and neither is the 15 × 30 metre one. Both spellings give 5,000 ft², which is 464.52 m²; the 15 × 30 m plot the same guides attach to it is 450 m², 3.1% smaller, the same shortfall the Lagos plot suffers when it is restated in round metres. Half plots inherit the confusion. Half of a 60 × 120 ft plot is 60 × 60 or 30 × 120, which is 3,600 ft² and 334.45 m²; half of 18 × 36 m is 324 m²; a "half plot" sold as 50 × 100 ft is 464.5 m², which is not half of anything on this page. Estate plots of 500 and 600 m² are graded lower here than the dimension pairs, because a dimension pair is at least checkable against a tape, while 600 m² is a figure from an allocation letter that this page has read only in estate-agency guides.
Numbers you will meet that are wrong. 1 plot = 1,000 m²: no Nigerian convention read for this page is within 7% of it; it is 100 × 100 ft rounded up past 929. An acre is 60 × 660 ft, or 18 × 200 m: one widely copied guide prints this, and 60 × 660 is 39,600 ft², 9% short of the acre, while 18 × 200 is 3,600 m², 11% short. The strip that is one chain by one furlong, 66 × 660 ft, is an acre; 60 ft is not a chain. A hectare is 2 acres, and elsewhere 2.5 acres: it is 2.4711, and both roundings change every plots-per-hectare figure derived from an acre count. 100 × 100 ft = 30 × 30 m = 900 m²: 100 ft is 30.48 m and 10,000 ft² is 929.03 m², so the equation loses 29 m² in the middle. And 1 plot = 648 m² = 60 × 120 ft written as one equation, which is two plots 3.1% apart pretending to be one.
Exact by definition, needing no source beyond the definitions: 1 ft =
0.3048 m (International Yard and Pound Agreement, 1959; NIST Handbook 44, Appendix C), so
1 ft² = 0.09290304 m²; 1 yd² = 9 ft²; 1 acre = 43,560 ft² = 4,046.8564224
m²; 1 hectare = 10,000 m² = 2.4710538 acres. Every area, every plots-per-acre count and
every rectangle on this page follows from those and from the dimensions entered or chosen.
Read for this page: Weights and Measures Act, Cap W3, Laws of the Federation of Nigeria 2004,
section 1(1), "The metre shall be the unit of measurement of length and the kilogramme shall be
the unit of measurement of mass", read from a mirrored text of the Act and not from a government
copy. Land Use Act, Cap L5, section 34(5)(a), "one plot or portion of the land not exceeding half
of one hectare in area", read at lawsofnigeria.placng.org; the Act defines no plot size and its
only area figures are the half hectare in section 34, the 500 and 5,000 hectare limits in section
6(2) and the 400 hectares in section 12(3).
Convention, stated as convention: the plot dimensions 60 × 120 ft, 18 × 36 m,
50 × 100 ft, 15 × 30 m, 100 × 100 ft and 30 × 30 m, the 500 and 600 m²
estate plots, and the round counts of six to the acre and fifteen to the hectare, were read on
2026-09-09 in two Nigerian estate-agency guides (thearchitect.com.ng and villaafrika.com), which are
named as the carriers of these figures and not as authorities for them. That survey plans and
Certificates of Occupancy state area in square metres is described as practice. Not read, and
therefore not cited: the Lagos State Physical Planning Permit Regulations 2019, whose server refused
the connection, and any state layout standard that fixes a residential plot at 18 × 36 m; guides
that say such a standard exists are repeating one another, and this page does not repeat them.
Worked example
My land is 60 by 120 feet. How many square metres is that, and how many such plots make an acre?
- 60 × 120 = 7,200 ft². A square foot is 0.09290304 m² exactly, so 7,200 × 0.09290304 = 668.90 m².
- In metres the sides are 60 × 0.3048 = 18.288 m and 36.576 m; the 18 × 36 m plot the guides print beside this one is 648 m², 3.1% smaller.
- Plots per acre: 43,560 ÷ 7,200 = 6.05, not 6. Six plots are 43,200 ft², 360 ft² short of the acre. Per hectare: 10,000 ÷ 668.90 = 14.95.
668.90 m² (7,200 ft², 0.1653 acre). An acre holds 6.05 of these plots and a hectare 14.95; the round six and fifteen are conventions that do not close. Only the choice of 60 and 120 is convention; everything after it is exact.
12 values on this page were driven in a browser and compared with independently derived figures on 2026-09-09 (2414 values across 203 calculators site-wide).
Questions
How many square metres is one plot of land in Nigeria?
There is no single figure. A 60 × 120 ft plot is 668.9 m²; the same Lagos plot written as 18 × 36 m is 648 m²; a 50 × 100 ft plot is 464.5 m²; estates sell 500 and 600 m² plots. The survey plan carries the figure that counts, in square metres.
How many plots make an acre?
43,560 ÷ 7,200 = 6.05 plots of 60 × 120 ft, so the usual six is 360 ft² short. On the 648 m² metric plot an acre holds 6.245; on a 50 × 100 ft plot it holds 8.71. The count depends entirely on which plot is meant.
How many plots are in a hectare?
14.95 plots of 60 × 120 ft, or 15.43 plots of 18 × 36 m, or 21.53 of 50 × 100 ft, or exactly 20 of 500 m². The quoted fifteen is 9,720 m² on the metric plot, 280 m² short of the hectare. A hectare is 2.4711 acres, not 2.5.