Guntha to Acre — Conversion Formula, Table & Land Buying Guide for South India
By SSP Group | Real estate developers with 14+ years across Bangalore | Updated May 2025
How Many Guntha in 1 Acre?
40 Guntha = 1 Acre 1 Guntha = 0.025 Acres 1 Guntha = 1,089 Square Feet
Area Converter
Formula: 40 Guntha = 1 Acre | 1 Guntha = 0.025 Acre
Quick convert:
These are the standard values accepted across Karnataka, Maharashtra, Andhra Pradesh, Telangana, and Gujarat — in government land records, revenue documents, and property sale deeds.
| Unit | Equivalent |
| 1 Guntha | 1,089 Square Feet |
| 1 Guntha | 0.025 Acres |
| 1 Guntha | 0.010117 Hectares |
| 1 Guntha | 101.17 Square Metres |
| 1 Guntha | 121 Square Yards |
| 40 Guntha | 1 Acre |
| 40 Guntha | 43,560 Square Feet |
Why Guntha Shows Up in Bangalore and South India Property Deals
If you have ever looked at an RTC (Record of Tenancy and Cultivation) for agricultural or DC-converted land near Bangalore, you have seen something like this:
“Survey No. 45/2 — Area: 2 Acres 20 Guntha”
This form – acres and guntha combined, like hours and minutes – is how revenue records have accounted for land in South India for more than a hundred years. You cannot afford to remain ignorant about this form if you propose to purchase agricultural land, a layout plot or DC converted land for residence anywhere in Karnataka, Andhra Pradesh, Telangana or Maharashtra.
The confusion arises at two points. Firstly buyers from North India – accustomed to bigha, biswa and marla-will have had no visual association for the concept of the guntha. Secondly, even when a buyer knows of the guntha, she will not remember that the road widening, park and common areas have been deducted by the layout developer from the gross guntha. The net land that you finally own is therefore different from the gross.
This guide offers you the conversion, the table and, most critically, practical advice to use these figures accurately when a property comes under review.
The Formula
Guntha to Acres:
Acres = Guntha ÷ 40
Acres to Guntha:
Guntha = Acres × 40
Guntha to Square Feet:
Square Feet = Guntha × 1,089
Worked Examples
| You have | Calculation | Result |
| 1 Guntha | 1 ÷ 40 | 0.025 Acres |
| 5 Guntha | 5 ÷ 40 | 0.125 Acres |
| 10 Guntha | 10 ÷ 40 | 0.25 Acres |
| 20 Guntha | 20 ÷ 40 | 0.50 Acres |
| 40 Guntha | 40 ÷ 40 | 1.00 Acre |
| 1 Guntha | 1 × 1,089 | 1,089 sq ft |
| 10 Guntha | 10 × 1,089 | 10,890 sq ft |
| 40 Guntha | 40 × 1,089 | 43,560 sq ft |
Guntha to Acre Conversion Table
| Guntha | Acres | Square Feet |
| 1 | 0.025 | 1,089 |
| 2 | 0.050 | 2,178 |
| 4 | 0.100 | 4,356 |
| 5 | 0.125 | 5,445 |
| 8 | 0.200 | 8,712 |
| 10 | 0.250 | 10,890 |
| 16 | 0.400 | 17,424 |
| 20 | 0.500 | 21,780 |
| 25 | 0.625 | 27,225 |
| 30 | 0.750 | 32,670 |
| 32 | 0.800 | 34,848 |
| 40 | 1.000 | 43,560 |
| 80 | 2.000 | 87,120 |
| 100 | 2.500 | 1,08,900 |
| 160 | 4.000 | 1,74,240 |
| 200 | 5.000 | 2,17,800 |
| 400 | 10.000 | 4,35,600 |
How Guntha Appears in a Karnataka Land Record
On the RTC document of Karnataka, the measurement of area is given in acres-guntha combination. In simple terms think like time in hours-minutes, where acre are full numbers and the remaining part is in gunthas less than an acre.
Some examples of how this reads in practice:
| RTC Reading | What It Means | Total in Square Feet |
| 0 Acres 20 Guntha | 20 Guntha only | 21,780 sq ft |
| 1 Acre 0 Guntha | Exactly 1 Acre | 43,560 sq ft |
| 1 Acre 20 Guntha | 1.5 Acres | 65,340 sq ft |
| 2 Acres 10 Guntha | 2.25 Acres | 98,010 sq ft |
| 3 Acres 20 Guntha | 3.5 Acres | 1,52,460 sq ft |
Converting a combined RTC reading to square feet:
Step 1 — Convert the acres to Guntha: multiply acres × 40 Step 2 — Add the remaining Guntha Step 3 — Multiply total Guntha × 1,089
Example: RTC shows 1 Acre 20 Guntha
- 1 acre = 40 Guntha
- 40 + 20 = 60 Guntha
- 60 × 1,089 = 65,340 sq ft
Guntha and Common Bangalore Plot Sizes
For Bangalore and its increasing periphery- Anekal, Hoskote, Devanahalli, Doddaballapur, property adjacent to new layouts are still measured in ‘guntha’ in the revenue records while plots are sold by the developer in ‘square feet’.
Here is how common Bangalore residential site dimensions translate to Guntha:
| Site Dimension | Square Feet | Guntha |
| 20 × 30 ft | 600 sq ft | 0.55 Guntha |
| 30 × 40 ft | 1,200 sq ft | 1.10 Guntha |
| 30 × 50 ft | 1,500 sq ft | 1.38 Guntha |
| 40 × 60 ft | 2,400 sq ft | 2.20 Guntha |
| 50 × 80 ft | 4,000 sq ft | 3.67 Guntha |
| 60 × 90 ft | 5,400 sq ft | 4.96 Guntha |
3040 site standard (1200sqft) would be 1.10 Guntha in the revenue record. 4060 site (2400 sqft) would be 2.20 Guntha. What this means is, when the RTC displays, it must be – within rounding – the square feet displayed on the sale agreement.
The Gross vs Net Guntha Problem — What Most Buyers Miss
This is where most land buying mistakes occur, and the mistake here is in relation to layout plots in the peripheries of Bangalore.
Once a developer buys, say, 40 Guntha ( 1 acre) agricultural land and converts to a residential layout, it is of 43,560 Sq Ft Gross Land. However, BBMP/ BDA/ panchayat would require the developer to give away:
- Internal roads — typically 20–30% of gross land in smaller layouts
- Park / open space reservation — typically 10–15% as per RERA norms
- Drainage and utility corridors — varies by layout size
After these deductions, the net saleable area can be as low as 55–65% of the gross guntha.
What this means in practice:
A developer advertising a “40 Guntha layout” (1 acre) may only have 22–26 Guntha of net plot area to sell after roads and parks are carved out. Each individual plot buyer is purchasing a fraction of that net — not a fraction of the gross 40 Guntha.
How to protect yourself:
Always ask for the approved layout plan- not theRTC
Confirm that the registration number is listed in the RERA registration showing gross land area, deductions, and net saleable area, individually.
Confirm that the individual plot dimensions on the layout plan align with the square footage on the sale agreement.
In Karnataka, confirm survey numbers and the extent thereof on the Bhoomi portal (bhoomi.karnataka.gov.in) before registering your agreement.
SSP Group’s plotted developments, such as AR Vista Plots in East Bangalore, are RERA registered with approved layout plans. Road deductions and net plot dimensions are disclosed in the RERA filing
. View current plot projects →
DC Conversion — Why It Matters When Guntha Is Involved
The land on an agricultural land can’t be converted and use it for construction without the DC Conversion order (Deputy Commissioner Conversion order also NA or Non-Agricultural conversion).
When buying a plot in an peripheral Bangalore layout, always confirm whether:
1. A-Khata or B-Khata? The A-Khata properties have the approvals from the BBMP and there are no dues pending against the property and the title deed of the land will be crystal clear. For B-Khata properties there are chances of no DC conversion order or BBMP approval to the property and can be bought/ sold, but can not get building plan approval from BBMP.
2. Does the land stand converted on RTC? After DC conversion the land use is changed to residential/ commercial from agriculture on RTC (Record of Rights, Tenancy Corps and Mutation). If the land is showing as wet/ dry on RTC then either there is no DC conversion, or there is no update on the RTC with regarding to the conversion. Both are very big danger signal.
3. Does the measurement on guntha on the conversion order match with the RTC? In the conversion order of the DC, land measurement of that parcel of land should be given in acres and guntha. On the RTC for that land this measurement should be the same, otherwise it would create problems while registering, as it may be 1-2 guntha mismatch which can cause legal issues during the time of registration.
All the above checks is very important for the peripheral areas like Anekal, Hoskote, Devanahalli, Doddaballapur, Sadahalli, etc, these corridors, where SSP Group operates and majority of available lands are on different level of DC conversion stages.
Guntha vs Other South Indian Land Units
| Unit | In Guntha | In Acres | In Square Feet |
| 1 Guntha | 1 | 0.025 | 1,089 |
| 1 Acre | 40 | 1 | 43,560 |
| 1 Hectare | 98.84 | 2.471 | 1,07,639 |
| 1 Cent (Tamil Nadu / Kerala) | 0.4 | 0.01 | 435.6 |
| 1 Ground (Tamil Nadu) | — | 0.0551 | 2,400 |
| 1 Square Metre | 0.00988 | 0.000247 | 10.764 |
| 1 Square Foot | 0.000918 | 0.000023 | 1 |
Note on Cent: In Tamil Nadu and Kerala, the cent is sub-division of acre. 1 Acre = 100 cents. 1 cent = 435.6 square feet. Guntha and cent are distinct and not to be confused when comparing lands in Karnataka and Tamil Nadu listings.
State-Wise Usage of Guntha
The conversion value of 1 Guntha = 1,089 sq ft does not change across states. What changes is how commonly it is used:
| State | Guntha Usage |
| Karnataka | Very common — appears in all RTC documents and land records |
| Maharashtra | Common — especially in rural and agricultural land records |
| Andhra Pradesh & Telangana | Common — used alongside Cents in some districts |
| Gujarat | Used in older land records |
| Tamil Nadu & Kerala | Rare — Cent is the preferred sub-acre unit here |
| North India | Not used — Bigha, Marla, and Kanal are the equivalent units |
Three Real Situations Where Knowing Guntha Saves You
Situation 1 — Reading an RTC Before Making an Offer
You are looking at a 30-cent plot (in the broker’s words) near Anekal. The RTC shows “0 Acres 12 Guntha.” Are they the same?
- 12 Guntha = 12 × 1,089 = 13,068 sq ft
- 30 Cents = 30 × 435.6 = 13,068 sq ft ✅
They match. The broker is describing the same land in Tamil Nadu unit (cents) rather than Karnataka unit (guntha) — possibly because the buyer is from Tamil Nadu. You are not being misled, just quoted in a different unit.
Situation 2 — Spotting a Measurement Shortfall
A dealer says the plot is “1 Acre” and the RTC shows “0 Acres 36 Guntha.” You calculate:
- 36 Guntha = 36 × 1,089 = 39,204 sq ft
- 1 Acre = 43,560 sq ft
- Difference = 4,356 sq ft = 4 Guntha short
At ₹2,500/sq ft (a conservative Anekal rate), that 4-Guntha gap is a ₹10.89 lakh discrepancy. This kind of mismatch requires an explanation before you proceed — it could be a measurement error, a road deduction not communicated, or a deliberate misrepresentation.
Situation 3 — Verifying a Layout’s RERA Filing Against the RTC
A developer’s RERA filing shows a project on “2 Acres 20 Guntha” with 60 plots of 1,200 sq ft each.
- Total gross land: (2 × 40) + 20 = 100 Guntha = 1,08,900 sq ft
- Total plot area: 60 × 1,200 = 72,000 sq ft
- Deductions (roads + parks): 1,08,900 − 72,000 = 36,900 sq ft (33.8%)
A 34% deduction for roads and open space is within the normal range for a RERA-compliant layout. If the deduction were 50%+, it would warrant questions about the approved layout plan. This calculation takes two minutes and tells you whether the developer’s numbers are internally consistent.
Summary — The Numbers You Need
| Conversion | Value |
| 1 Guntha → Square Feet | × 1,089 |
| 1 Guntha → Acres | ÷ 40 (= 0.025 acres) |
| Acres → Guntha | × 40 |
| 1 Acre → Square Feet | 43,560 sq ft |
| 30×40 site → Guntha | 1.10 Guntha |
| 40×60 site → Guntha | 2.20 Guntha |
Before you buy any land measured in Guntha: 1. Check RTC on Bhoomi to ensure no encumbrance 2. Convert DC for Bhoomi 3. Obtain A-Khatha Request for layout plan 4. Confirm RERA registration 5. Check net area against gross area
All SSP Group’s projects in Bangalore (Sree Sai Aerocity, AB Gardenia, AR Vista plots) are RERA registered and have complete documentation for your confirmation. Land extents, survey numbers and plot sizes are available to enable verification.
📞 +91 9019223355 | 📧 info@sspgroup.org.in View RERA-approved plot projects in Bangalore →
SSP Group (S&S Properties) — 14+ years of real estate development across East and North Bangalore. 16+ completed projects. 1,000+ homeowners. Rated 4.9/5 on Google.
