Fidamen

Tiling Cost Calculator

This Tiling Cost Calculator estimates how many tiles you need and the likely project cost for a rectangular room by combining area math with common cost inputs: tile price, labor, underlayment and removal. It applies an industry-standard waste allowance so you can purchase the correct quantity and avoid repeat orders.

Results use simple geometric formulas and round-up logic for purchase quantities. For safety, compliance, and best-practice installation guidance consult relevant standards and government guidance linked in the citations below.

Updated Nov 24, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record c889bad3968b • Reviewed by Fidamen Standards Committee

Inputs

Results

Updates as you type

Room area (sq ft)

120

Single tile area (sq ft)

1

Tiles required (no waste)

120

Tiles required (including waste)

132

Tiles to buy (rounded up)

—

Tile material cost

—

Labor cost

$480.00

Underlayment / substrate cost

$60.00

Removal / disposal cost

$0.00

Estimated total project cost

—

Total cost per sq ft

—

OutputValueUnit
Room area (sq ft)120sqft
Single tile area (sq ft)1sqft
Tiles required (no waste)120tiles
Tiles required (including waste)132tiles
Tiles to buy (rounded up)—tiles
Tile material cost—USD
Labor cost$480.00USD
Underlayment / substrate cost$60.00USD
Removal / disposal cost$0.00USD
Estimated total project cost—USD
Total cost per sq ft—USD
Primary result120

Visualization

Methodology

Compute room area in square feet (length × width). Convert tile dimensions from inches to feet to compute single-tile area (length/12 × width/12).

Divide room area by single-tile area to get tiles required; apply a user-selected waste allowance (commonly 5–15%) to allow for cutting, patterning, and breakage.

Round up to whole tiles for ordering. Material cost assumes price input is per square foot; labor and other costs are multiplied by room area. Total project cost sums materials, labor, underlayment, and removal.

F.A.Q.

How much waste allowance should I use?

Typical waste allowances range from 5% for simple straight-lay installations to 15% or more for diagonal patterns, mosaics, or heavy cutting. Use a higher percent for irregular rooms or complex layouts. This calculator lets you adjust waste percent to match your project risk tolerance.

Why do we round up tiles instead of rounding the area?

Tiles are sold as whole units. Rounding up the tile count ensures you have enough whole tiles to complete the layout, including cuts and replacements for damaged tiles. This reduces the risk of mismatched batches if you return later to buy more.

Does the calculator include labor and disposal safety guidance?

The calculator estimates labor and disposal costs but does not replace safety or regulatory requirements. For workplace safety and handling of old flooring (including potential lead or asbestos hazards), consult OSHA and EPA guidance before demolition or removal.

Can I use metric units?

This version uses feet and inches for common trade practice. Convert metric measurements to feet/inches before entry, or check related calculators that provide metric unit inputs. For unit definitions and conversion standards, see the NIST SI guidance in the citations.

How accurate are cost estimates?

Estimates depend entirely on input accuracy. Material prices, labor rates, and hidden site variables (substrate condition, leveling, access) can change final costs. Use these results for planning and budgeting; get a contractor estimate for binding quotes.

Sources & citations

Further resources

Versioning & Change Control

Audit record (versions, QA runs, reviewer sign-off, and evidence).

Record ID: c889bad3968b

What changed (latest)

v1.0.0 • 2025-11-24 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Public QA status

PASS — golden 25 + edge 120

Last run: 2026-01-23 • Run: golden-edge-2026-01-23

Engine

v1.0.0

Data

Baseline (no external datasets)

Content

v1.0.0

UI

v1.0.0

Governance

Last updated: Nov 24, 2025

Reviewed by: Fidamen Standards Committee (Review board)

Credentials: Internal QA

Risk level: low

Reviewer profile (entity)

Fidamen Standards Committee

Review board

Internal QA

Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person

Semantic versioning

  • MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
  • MINOR: New features or fields that do not change existing outputs for the same inputs.
  • PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.

Review protocol

  • Verify formulas and unit definitions against primary standards or datasets.
  • Run golden-case regression suite and edge-case suite.
  • Record reviewer sign-off with credentials and scope.
  • Document assumptions, limitations, and jurisdiction applicability.

Assumptions & limitations

  • Uses exact unit definitions from the Fidamen conversion library.
  • Internal calculations use double precision; display rounding follows the unit's configured decimal places.
  • Not a substitute for calibrated instruments in regulated contexts.
  • Jurisdiction-specific rules may require official guidance.

Change log

v1.0.0 • 2025-11-24 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 2b77cbbe51ff