Project measurements

Change the defaults to match your project and the product you plan to buy.

Centerline strategy

Tile field length

ft

Tile field width

ft

Actual tile face length

in

Actual tile face width

in

Planned grout joint

in

Entered perimeter gap at each edge

in

Tile orientation

Project result

Balanced straight-grid tile layout

Review each axis separately. The selected centerline phase keeps opposite edge pieces equal and reports the physical tile positions that span the usable field. Transfer the centerline and verify the result with a dry layout before setting tile.

Planning estimate only. Verify product coverage, package size, supplier specifications and project requirements before purchasing.

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Budget scenario

Add your current local costs

Use a current supplier subtotal or reuse a priced calculator result, then add optional delivery, tax and contingency. Home Measure Lab does not fetch or guess live prices.

Currency

Supplier / material subtotal

local

Delivery / project fees

optional

Tax

%

Contingency

%

This calculator does not currently expose a priced result. Enter a current supplier subtotal manually.

Material subtotal$0.00

Delivery / fees$0.00

Tax$0.00

Contingency$0.00

Planning total$0.00

Enter a current supplier subtotal or reuse a priced calculator result.

Budget values are local planning inputs, not live quotes. Verify tax treatment, delivery, labor and supplier pricing before purchasing.

Use the result

From measurement to purchase

Measure the project area carefully.
Replace editable defaults with product-label or supplier values.
Review the waste or extra allowance.
Use the rounded purchase quantity for whole packages.

Assumptions & notes

Use actual installed tile face dimensions when available. Nominal product names can differ from the physical face dimension that controls layout.
The entered perimeter gap is an externally selected project/system requirement. HomeMeasureLab does not choose movement-joint, perimeter-clearance or sealant requirements.
Auto mode evaluates tile-centered and grout-joint-centered straight-grid phases independently on both axes and chooses the feasible phase with the larger equal edge piece.
Physical tile positions are a layout count, not a purchase quantity. Cut reuse, breakage, pattern direction, shade/caliber reserve and box rounding belong in the Tile Calculator purchase plan.
This calculator is for a straight orthogonal grid only. It does not design diagonal, herringbone, running-bond/offset, mosaic-sheet, border or multi-format patterns, and it does not validate substrate, mortar, waterproofing, lippage or code/system compliance.

Methodology

Straight-grid centered-layout geometry & assumptions

Usable field

field dimension − 2 × entered perimeter gap

The gap is user/project supplied; the calculator does not choose it.

Straight-grid module

actual tile face + planned grout joint

Used to evaluate feasible centered phases.

Equal edge piece

[usable field − (N − 2) × tile face − (N − 1) × grout joint] ÷ 2

For a phase with N physical tile positions and at least two positions.

Centerline phase

odd N = tile-centered; even N = grout-joint-centered

Auto mode compares feasible parity choices and favors the larger equal edge piece.

How to measure this project

Measure the actual rectangular tile field between the boundaries that will control the finish layout. Record the actual tile face, selected joint width and any project-required perimeter gap separately. Split returns, niches, changes of plane, borders or other independent fields rather than blending them into one rectangle.

Before you buy materials

Use the layout result to understand edge cuts and physical positions, then move to Tile Calculator for area, waste, boxes and repair reserve. Use Grout Calculator with the selected manufacturer coverage for grout quantity. Do not multiply the physical position counts to create a purchase quantity because cut reuse and packaging are not modeled here.

Reference

Layout outputs and their boundaries

Output	What it means	What it does not mean
Centerline strategy	tile face or grout joint lands on field center	not an installation specification
Equal edge piece	same calculated cut face at opposite edges	not a guarantee every field condition can use that cut
Physical tile positions	columns/rows crossed by the field	not pieces or boxes to purchase
Entered perimeter gap	clearance deducted from both edges of an axis	not a universal movement-joint value

Source evidence

Primary references behind key assumptions

These references document specific assumptions used or discussed on this page. The exact product label, technical data sheet, project drawings and applicable requirements take priority.

Daltile — Floor Tile Installation Instructions

Supports: Layout guidance establishes square center lines, dry-lays tiles with uniform joints and describes shifting a center line when the first layout leaves cuts smaller than half a tile.

Boundary: This supports centered-layout planning only. Product, substrate, mortar, movement-joint and installation-system requirements remain authoritative.

Daltile — Wall Tile Installation Guide

Supports: Wall-layout guidance uses a plumb center line, loose tiles with uniform joints and a half-tile centerline shift when the first phase creates cuts smaller than half a tile.

Boundary: This is layout guidance, not a universal substrate, adhesive, waterproofing, movement-joint or code specification.

Ceramic Tile Education Foundation — Centered and Balanced Tile Layout

Supports: Industry education emphasizes centered and balanced tile fields, equal opposite cuts where possible and avoiding excessive small edge cuts when possible.

Boundary: The article is planning/workmanship context. HomeMeasureLab does not reproduce or certify ANSI/TCNA compliance and does not replace project specifications.

Questions

Frequently asked questions

Why compare tile-centered and grout-joint-centered layouts?

Moving the grid by half a module changes the two edge cuts. One phase can leave a narrow sliver while the other produces larger, more balanced edge pieces.

Does auto mode guarantee every edge cut is at least half a tile?

No. It chooses the better feasible straight-grid phase for the entered rectangle. Real rooms, obstructions, pattern rules and adjoining fields can make an ideal half-tile condition impossible.

Should I use the tile-position count to order tile?

No. It is a geometric cross-check. Use Tile Calculator for measured area, explicit waste, package coverage and whole-box rounding.

Does the calculator choose the perimeter gap?

No. Enter the value required by the selected system, project documents or applicable instructions. Zero means no gap has been deducted by this arithmetic, not that zero is an installation recommendation.

Can I use this for herringbone or running bond?

No. Those layouts require pattern-specific phase, offset and cut logic beyond this straight-grid calculator.

Next step

Keep this project moving

Follow the measurement into the most useful related reference, calculator or project view.

Understand the inputHow to Plan a Balanced Tile LayoutContinue →Related projectTile CalculatorContinue →Browse this project typeInterior calculatorsContinue →

Planning guides

Understand the inputs behind this calculator

All guides →

Tile & Finish

How to Plan a Balanced Tile Layout

Plan centerlines, dry-layout checks and balanced edge cuts for a straight tile grid before material is set.

Read guide →

Tile & Finish

Tile-Centered vs Grout-Joint-Centered Layout

Understand the half-module shift between tile-centered and grout-joint-centered straight-grid layouts and how it changes balanced edge cuts.