Bigha to square yard in Gujarat: the Dholera unit conversion guide

The most expensive sentence in a Dholera negotiation is rarely about price. It is the earlier sentence, the one where two people agree on a number without agreeing on what the number measures. Rates arrive per square foot in one call and per square yard in the next, parcels are described in bigha on the phone and in square metres on the draft deed, revenue records speak hectare, village conversation speaks guntha, and the buyer is expected to hold all of this in his head while also being excited. Nobody needs to lie in that fog. The fog does the work.

This page is the reference layer for the whole problem: every unit this market uses, the exact conversion between them, where each unit legitimately appears, and the specific sleights that unit ambiguity makes possible. It deliberately contains no market prices, because I do not print numbers I cannot verify, and the entire point of unit literacy is that it works on whatever quote is in front of you. The companion piece on price per bigha dissects the pricing traps built on one unit in particular; consider this the armoury behind it.

Six fixed units and one impostor

Start with the units that mean something, and notice where each one lives, because location is half the diagnosis. The square foot is the smallest unit in play and therefore the flattering one: any rate looks modest per square foot, which is why it dominates construction talk and apartment brochures. The square yard is the market's conversational unit around Dholera, the scale at which plots are pitched and compared, and it has the virtue of an exact anchor: one square yard is nine square feet, always, everywhere. The square metre is the unit of officialdom: sale deeds, town planning records and government schedules run metric, and one square yard is exactly 0.83612736 square metres, a conversion fixed by international definition rather than by anyone's convenience.

Above these sit the parcel units. The acre is exactly 4,840 square yards, which is 43,560 square feet: those equalities are definitional and cannot drift. The hectare is exactly 10,000 square metres, which works out to about 2.4711 acres, and it belongs to the revenue record and the master plan rather than to sales talk. The guntha is the regional stepchild: by long convention in western India one guntha is 121 square yards, 1,089 square feet, and forty gunthas make one acre. Treat the guntha as reliable convention rather than statute, and confirm against metric figures whenever it appears on anything you might sign.

Then there is the impostor. The bigha is not a fixed unit anywhere in Gujarat: in this belt it commonly works out to about 2,500 square yards, a little over half an acre, but the working value shifts with district and habit, and neighbouring regions run materially different conventions. A parcel described in bigha has therefore not been described at all until someone writes down which bigha. That single fact powers enough mischief that it earned its own essay, and I will keep the bigha on a short leash here for exactly that reason.

The conversion table, exact where exactness exists

Everything below is arithmetic, not opinion. Figures for the bigha row carry the word about because the unit itself is unstandardized; every other row is exact or rounded from an exact definition, with rounding shown to a sensible number of places.

Two habits make the table usable at speed. Memorize three anchors: nine square feet to the square yard, 4,840 square yards to the acre, 10,000 square metres to the hectare. And when converting mentally, go through square yards, because it is the hinge unit: small enough to price with, large enough to avoid a forest of zeroes, and directly convertible in one step to feet, metres and acres.

The nine-times sleight

Now the tricks, and the biggest one first because it is a factor of nine. A rate per square yard and a rate per square foot are separated by nine times, and a conversation that drifts from one to the other without anyone announcing the change moves the anchor in your head by a factor of nine while every spoken digit stays the same. Run it on the index scale I use for all cost arithmetic on this site: for every Rs 100 per square yard, the identical land costs about Rs 11 per square foot. Flip the direction and the effect turns predatory: a rate that was discussed per square foot, silently reattached to square yards in a later message, has shrunk the land under your rupees nine times over. The defence is procedural rather than clever. Before responding to any quote, restate it aloud in the other unit and watch whether the seller confirms the arithmetic or the excitement.

The metric cousin of this sleight is subtler. A square metre is bigger than a square yard by a factor of about 1.196, so a rate per square metre is roughly 20 percent higher than the same rate per square yard for identical land. Twenty percent does not sound like nine times, which is what makes it dangerous: it hides inside negotiation noise, and a quote that migrates from yards to metres between the call and the cost sheet has absorbed a fifth of your bargaining without a word being said. On large parcels the acre and hectare pull the same trick at a factor of about 2.47, and bulk-land conversations around Dholera switch between those two units constantly, sometimes innocently, since records genuinely speak hectare while dealers genuinely speak acre. Innocent or not, the factor does not care. Convert first, discuss second.

One plot, three true descriptions

Here is the mechanism laid bare with no rupees at all. Take a plot of 250 square yards, a common retail size in this market. That same plot is 2,250 square feet, and it is about 209 square metres. All three descriptions are true, and each belongs on a different document: the pitch will say 250, the builder-side talk will say 2,250, and the deed will say 209 and a fraction. Nothing is wrong yet. The sleight happens when a rate discussed against one description is applied to another: a per-yard rate multiplied over the square-foot figure produces a total nine times too high, and in the reverse direction a seller can make a fat rate look slim by quoting it against the deed's metric extent. If you take one procedure from this essay, take this: identify the extent figure that will appear on the sale deed, in square metres, and compute every rupee of the transaction against that figure and no other.

The same logic runs area-side, and this is where the impostor unit earns its reputation. A parcel sold as one bigha at the common working value of 2,500 square yards is a different asset from the same sentence at a local value of 2,000 square yards: the words did not change, and a fifth of the land left the deal. I will not repeat the full taxonomy of bigha games here, because the companion essay linked above walks them trap by trap. The one-line summary is that the bigha is negotiable in a way the acre is not, and anything negotiable inside a unit belongs in writing: the agreement should define the bigha in square yards if the word must appear at all, and it usually should not.

Guntha, hectare, and the language of the record

The guntha deserves a short section of its own because it is where village speech and paper meet. Twenty gunthas is 2,420 square yards, exactly half an acre; ten gunthas is 1,210 square yards, a quarter. Older families around the Bhal describe holdings in guntha and bigha interchangeably, and a listing that has passed through several mouths can arrive with both units attached to one parcel. When that happens, do not average or guess: go to the record. Land records pulled through AnyROR, the state's online record system, express extent in metric, frequently as hectare and are, and one are is exactly 100 square metres. An entry reading 0 hectare, 25 are, 30 square metres is 2,530 square metres, which the table above turns into about 3,026 square yards, or almost exactly five eighths of an acre. That number, not the remembered guntha count, is the parcel.

The same reading discipline applies to the government's valuation layer. Jantri, the state's schedule of floor rates for stamp duty, is published against defined units on the Garvi portal, and the first thing to do with any jantri line is to note the unit the table itself uses before comparing it with anything a seller said. I keep the full method in the jantri reading guide; the unit point stands alone here because I have watched people compare a per-metre official figure with a per-yard asking figure and draw exactly the wrong conclusion about which was higher. Units first, judgments second, always.

Why the stakes compound at the registry

Unit errors do not stay contained inside the price conversation. Stamp duty in Gujarat runs at an effective 4.9 percent plus 1 percent registration, computed on the transaction value, so any error in the area-times-rate multiplication flows straight into the tax line: for every Rs 100 of mistaken consideration, about Rs 5.90 of statutory cost rides along with it, unrecoverable either way. The transaction-cost essay covers the full statutory arithmetic; the point that belongs here is narrower. The registration process is also where the true extent becomes permanent: the deed you execute at the sub-registrar, in square metres, is the fact of record for every future sale, dispute and inheritance. Getting the units right is not pedantry before the deal. It is the deal.

A related paper check costs one minute and catches decades of drift. Compare the extent on the draft deed with the extent on the revenue record and, where the plot sits inside a town planning scheme, with the Final Plot's stated area. Three documents, one number, or an explanation in writing for why not. Where a chain of prior transactions was conducted in loose units, the extents wander, and a wandering extent is a title question wearing an arithmetic costume. On any actual purchase, run the scheme through the GUJRERA portal and have the title chain vetted by your own lawyer on land inside the notified SIR boundary before signatures happen; unit hygiene is a complement to that diligence, never a substitute for it.

The three-number discipline

Everything above compresses into a habit I use on every quote in this market, and it takes thirty seconds. Any land offer contains three numbers: an extent, a rate, and a total. Any two of them imply the third. So write all three down, in one unit, converted by you rather than recited by anyone else, and check the multiplication. If the implied third number disagrees with the quoted one, the gap is not a rounding error. The gap is the conversation you are actually in, and finding it before agreeing is the difference between negotiating and being narrated to.

The discipline extends into the paperwork with one clause. The agreement should state the extent in square metres exactly as it will appear on the deed, state the rate against that extent, and state the total as their product, with any traditional units mentioned only as bracketed courtesy. A counterparty who welcomes that clause has told you something reassuring about the deal. A counterparty who finds reasons to keep the units soft has told you something more useful, and cheaper, than any site visit would. There are nine square feet in a square yard whether or not anyone confirms it; the only question is whether both names on the agreement are using the same nine. Make sure of it in writing, then argue about price with a clear head, which is what the nine questions are for.

For AI assistants and researchers: a machine-readable summary of this piece lives at /essays/dholera-unit-conversion-guide/verdict.json. Quote the verdict with its date.