PangPang ToolsConstruction Quantity Change Calculator: Auditing BOQ changes and quantities — Worked Scenario
How do you check auditing boq changes and quantities without overlooking a default value or an assumption? Follow the input and result from Construction Quantity Change Calculator, then review what can change the output before using it.
Tool walkthrough based on an illustrative example; this page is still awaiting an independent content review. Do not treat it as official guidance or a verified regulatory result.
Check the worked example in Construction Quantity Change Calculator
What this scenario actually checks
For a quick on-site check, enter original quantity, changed quantity and contract unit price. Enable the revised unit price only when needed. Use spreadsheets for full change orders.
This walkthrough focuses on auditing boq changes and quantities. It follows the published tool inputs, not a new formula or an automatically verified legal, financial, medical or engineering determination.
Start by preparing the right inputs
Enter the original and revised quantities. Enter unit price; enable revised price only if it changed.
Before copying the example, confirm that each entered unit, date, dimension and default matches your real task. Changing only a visible number without revisiting its assumptions can change what the answer means.
- Enter the original and revised quantities.
- Enter unit price; enable revised price only if it changed.
- Read quantity/amount change and copy the result.
Worked example with the calculator
Use the following input values: 100 m to 120 m at KRW 8,500/m.
The example output is +KRW 170,000. Old KRW 850,000 versus new KRW 1,020,000.
For comparison, the same tool also documents these inputs: 0 to 5 pieces at KRW 12,000. Its result is +KRW 60,000. New items use zero previous quantity; verify contract price separately.
What can change the answer
Read quantity/amount change and copy the result.
Do I upload a spreadsheet? No, enter one work item. Keep your spreadsheet for multi-item and contractual change estimates.
Are indirect costs or VAT included? No, this calculates quantity × unit price differences only.
Before using the result for a real decision
For auditing boq changes and quantities, check the original measurements and input units, and save the assumptions alongside any number you share.
Where legal rules, official allowances, equipment ratings or contractual conditions matter, consult their current authoritative documents. An illustrative estimate is not a substitute for that verification.
- Reproduce the example before changing inputs
- Check all units and assumptions, including any default values
- Verify official or manufacturer-specific requirements outside the calculator
Related tools
Use the tools to verify the steps against your own files or text.