Tile calculators.

Where the tile goes changes what has to be counted. A floor is one field; a shower is several faces with a recess cut out of one; a waterline is four narrow bands. Eight of these calculators each draw one kind of surface tile by tile, measure the cuts and turn them into an order; the ninth weighs the grout for the joints they leave.

Floors and open fields

• Tile calculator

  One rectangular field in a straight, offset, diagonal, herringbone or hexagon pattern. Inspect single cuts, count edge trim by run, and keep discarded material apart from spares and box rounding.

• Deck tile calculator

  Snap-together outdoor modules. Stop at whole tiles or cut to the perimeter, and measure the uncovered border either way.

Walls and wet rooms

• Wall tile calculator

  A tiled band with a window in the way. Band and opening are measured from the same floor line, and only their overlap leaves the count.

• Shower tile calculator

  Three wall faces, a niche, a bench and a separate floor product, each material with its own carton count.

• Pool waterline tile calculator

  Four bands around a rectangular pool, space for the corner details and a skimmer opening, combined into one box order.

Overhead

• Ceiling tile calculator

  Panels in a suspended grid. Compare both panel orientations and their border widths, and reserve full cells for lights.

Small formats and store items

• Mosaic tile calculator

  Mounted sheets of small chips. Find the sheets you need, and whether a boundary trims the backing between chips or cuts through them.

• Lowe’s tile calculator

  A specific store item, with its verified actual dimensions set against the nominal label and the order reconciled with piece or carton sales. Calculiva is independent of Lowe’s.

Setting materials

• Grout calculator

  The joints of the real layout, cuts included and the wall edge left for caulk, in pounds at the density each maker’s coverage chart implies.

When two of them apply

A bathroom often needs more than one page: the shower walls on the shower calculator, the main floor on the general one. Run them separately and keep the orders separate, because a wall tile and a floor tile are rarely the same product. If a mosaic goes in the niche or on the shower floor, count its sheets on the mosaic page, where the chip grid inside the sheet is part of the drawing. Once the floor is laid out, the grout for its joints is weighed from that same layout on the grout page listed above.

Piece dimensions come back in sixteenths of an inch or in millimeters, run totals in feet or meters; the rounding rules are on how we calculate, and the item dimensions behind the store page are dated in the source register.