Building codes and real-estate listings describe lots by area. A typical U.S. suburban lot is 7,000–10,000 ft² (about 0.16–0.23 acres); in Pakistan and India plots are sold in marla, kanal or square yards.
How to use the Lot Size Calculator
- Lot width (frontage)
- Lot depth
- Every result field is editable: type into Lot size or any other result and Lot depth plus every other field update to match.
Results update as you type, and every field accepts the units shown in its menu.
How it works
Width and depth are multiplied after converting to metres, and the area is shown in each unit. Type a target lot size into any result to solve for the depth.
Inputs explained
| Field | What to enter |
|---|---|
| Lot width (frontage) | Units: ft, m, km, cm, in, yd … |
| Lot depth | Units: ft, m, km, cm, in, yd … |
What each result means
- Lot size = [Lot width (frontage)] × [Lot depth]
- In acres = [Lot width (frontage)] × [Lot depth]
- In square metres = [Lot width (frontage)] × [Lot depth]
- In marla = [Lot width (frontage)] × [Lot depth]
Example values
How the main result changes when Lot depth changes and everything else stays at the example values above:
| Lot depth (ft) | Lot size (ft²) |
|---|---|
| 60 | 3,600 |
| 90 | 5,400 |
| 120 | 7,200 |
| 150 | 9,000 |
| 180 | 10,800 |
| 240 | 14,400 |
Formula
lot size (ft²) = width × depthacres = ft² ÷ 43,560Worked example
Inputs — Lot width (frontage): 60 ft; Lot depth: 120 ft.
Results — Lot size = 7,200 ft²; In acres = 0.1653 acre; In square metres = 668.9 m²; In marla = 26.45 marla.
Frequently asked questions
How many acres is a 60 × 120 ft lot?
7,200 ft² ≈ 0.165 acres.
What is a quarter-acre lot?
10,890 ft², for example about 99 × 110 ft.
What formula does the Lot Size Calculator use?
lot size (ft²) = width × depth.