The Parking Area Calculator is a practical tool for determining the required parking area based on the total lot area, parking ratio, or efficiency ratio.
This calculator is helpful for planners, architects, and property managers in optimizing parking layout and area utilization.
How to Use the Calculator:

Basic Calculator:
 Enter any two values from Total Lot Area, Parking Ratio, or Parking Area.
 The calculator will compute the missing value based on the inputs.

Advanced Calculator:
 Input values for Total Lot Area, Number of Parking Spots, and Average Parking Spot Size.
 This will provide the Efficiency Ratio in percentage, indicating how effectively the lot area is utilized for parking.

Click Calculate to view results or Reset to clear fields.
Solved Calculations
Example 1
Step 
Calculation 
Total Lot Area 
5000 ft² 
Parking Ratio 
40% 
Parking Area 
(to be calculated) 
Calculation 
5000 × (40 ÷ 100) = 2000 ft² 
With a total lot area of 5000 ft² and a parking ratio of 40%, the parking area required is 2000 ft².
Example 2
Step 
Calculation 
Total Lot Area 
6000 ft² 
Parking Area 
1800 ft² 
Parking Ratio 
(to be calculated) 
Calculation 
(1800 / 6000) × 100 = 30% 
Here, given a total lot area of 6000 ft² and a parking area of 1800 ft², the calculated parking ratio is 30%.
Example 3 (Advanced)
Step 
Calculation 
Total Lot Area 
8000 ft² 
Number of Parking Spots 
50 
Average Spot Size 
150 ft² 
Efficiency Ratio 
(to be calculated) 
Calculation 
(50 × 150) / 8000 × 100 = 93.75% 
With a lot area of 8000 ft², 50 spots, and an average spot size of 150 ft², the efficiency ratio is calculated as 93.75%, reflecting how well the area is used for parking.