# Lot Size Calculator (Square Feet and Acres)

URL: https://speedycalculator.com/calculators/conversion/lot-size-calculator/
Last updated: 2026-10-25

> The lot size calculator turns a plot’s width and depth into square feet, acres, square metres and marla, the way property listings and zoning rules describe it.

## Inputs

- Lot width (frontage) (ft, m, km, cm, in, yd, mi)
- Lot depth (ft, m, km, cm, in, yd, mi)

## Results

- Lot size
- In acres
- In square metres
- In marla

## Formula

```
lot size (ft²) = width × depth
acres = ft² ÷ 43,560
```

## Explanation

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

FieldWhat to enterLot width (frontage)Units: ft, m, km, cm, in, yd …Lot depthUnits: 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)603,600905,4001207,2001509,00018010,80024014,400

## Worked 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.

## FAQ

**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.


## Sources

- [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)