Granite Countertop Calculator

Find how much granite or stone a countertop needs and what it will cost.

Enter your numbers

Length (ft)

Example: 8

Width (ft)

Example: 2.5

Rate per sq ft

Example: 450

Wastage (%)

Example: 10

Result

Currency

Figures are computed on your device; nothing is sent anywhere.

১) ক্ষেত্রফল = দৈর্ঘ্য(ফুট) × প্রস্থ(ফুট)। ২) অপচয়সহ ক্ষেত্রফল = ক্ষেত্রফল × (১ + অপচয়%/১০০)। ৩) খরচ = অপচয়সহ ক্ষেত্রফল × প্রতি বর্গফুট দাম।

The area is length times width, and adding the wastage percentage covers the cuts and offcuts a counter always needs.

Multiplying the wastage-included area by the rate per square foot gives the material cost.

Wastage matters more on small counters, where a single offcut can be a large share of the slab.

Measuring only the visible top and forgetting the front edge and backsplash, which add area.
Using zero wastage for a stone with veining, where matching the pattern wastes more material.

Use it to price a granite or marble counter before ordering the slab.
It is not a fabrication quote; cutting, polishing and fitting are usually charged separately.

An 8 ft by 2.5 ft countertop with 10% cutting wastage at 450 per sq ft costs 9,900.

Area 20.00

Area with wastage (sq ft) 22.00

Cost ৳9,900.00

Why add wastage for a countertop?

Cuts for a sink or hob and edge trimming waste stone, so 8 to 12 percent extra is normal.

Is granite priced per square foot or per slab?

Most shops quote per square foot but sell whole slabs, so the slab size can raise the real price.

Last updated: 2026-10-04