Countertop Square Footage Calculator
Measure kitchen and bathroom countertop area to estimate slab material - granite, quartz, marble, butcher block, or laminate. Most fabricators charge per square foot of finished surface.
Countertop Area Calculator
Measuring countertop runs
Break your kitchen into separate runs: main run, peninsula, island, and any return walls. For each run, measure length along the front edge × depth (front-to-back including overhang). For an L-shaped kitchen, measure each leg as a separate rectangle and sum.
Standard kitchen countertop depth is 25.5 in (2.125 ft) - cabinet box is 24 in plus a 1.5 in front overhang. Most stone fabricators expect this depth unless you specify deeper. Bathroom vanities are usually 22 in deep (1.83 ft).
Stone slab planning
Granite and quartz typically come in slabs around 9 ft × 5 ft 6 in (~50 sq ft per slab), though sizes vary by stone and supplier. A typical kitchen needs one full slab plus part of a second to allow for graining direction, the sink cutout, and seam placement.
Fabricators charge for the full slab usage, not just your finished area. A 50 sq ft kitchen often requires 60-70 sq ft of slab purchased. Always have the fabricator template after cabinets are installed - paper templates from drawings rarely match real-world conditions.
Pro tips
Count seams in your design
Most slabs max out at 9-10 ft. Runs longer than that will have a seam. Decide where the seam goes BEFORE templating - usually at a sink or cooktop, never on a long unbroken run.
Add for overhangs and waterfalls
Standard 1.5 in front overhang is included in 25.5 in depth. Bar overhangs (12 in for seated counters) and waterfall ends add square footage - measure them separately.
Sink and cooktop cutouts are billed
Fabricators charge for cutouts even though material is removed. The cutout fee covers labor and the unused stone scrap.
Bookmatch slabs for veining
For high-veining stones, request bookmatched slabs and look at them in person before ordering. The whole-slab look depends on which slab you choose.