# Construction Quantity Calculator

> List items with quantities and rates, then apply wastage, overhead, contingency, profit and tax.

Build a quick bill of quantities free: add items with quantities and rates, then apply wastage, overhead, contingency, profit and tax to reach a grand total.

- **Canonical:** https://build.ailovekit.com/calculators/construction-quantity-calculator/
- **Category:** Calculator
- **Processing:** Runs entirely in your browser. Files are never uploaded to AiLoveKit servers.

## How It Calculates

- **Formula:** Total = Σ(qty × rate), then factors applied sequentially

All calculation runs locally in your browser; results update as you type and include the substituted working.

## A Mini BOQ in Your Browser

Between a back-of-envelope total and a full tender document sits the working estimate: items, quantities, rates, factors. AiLoveKit's **construction quantity calculator** is exactly that sheet - add rows for each work item, watch the subtotal build, then apply wastage, overhead, contingency, profit and tax in order.

## Typical Workflow

- **Take off quantities** - use the concrete, brick and plaster calculators for each item.

- **Apply your rates** - from supplier and labor quotes.

- **Layer the factors** - and export the sheet as CSV.

Need projects, revisions and printable estimate books? Take the same data into [your Build projects](https://build.ailovekit.com/projects/).

## Frequently Asked Questions

**What is a bill of quantities?**

A BOQ lists every measurable item of work - concrete m³, brickwork m², paint m² - with quantity and rate, then sums to a project total. It is the standard basis for tenders and progress payments.

**In what order are factors applied?**

Wastage, overhead, contingency, profit and tax each apply to the running total, in that order - matching typical estimate sheets.

**Can I export the sheet?**

Yes - use Download CSV to get the items, steps and totals as a spreadsheet-ready file.

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Source: https://build.ailovekit.com/calculators/construction-quantity-calculator/
Part of AiLoveKit: https://build.ailovekit.com/
Machine-readable index: https://build.ailovekit.com/llms.txt