Construction · Free Interactive Tool
Change Order Calculator
Charge for scope changes, don’t absorb them.
Your Numbers
The Result
The Operator's Read
Charge about $3,120 for the change. Unbilled change orders are where trade profit disappears — a signed change order per scope shift fixes it.
Built by The Crimson Bench · Educational tool, not financial advice
About the Change Order Calculator
Enter the extra labor and materials plus your markup to price a change order properly.
How the Change Order Calculator Works
4 inputs in, 2 results out — computed live on your device. Here's exactly what it uses.
| Input | Example value |
|---|---|
| Extra hours | 20 |
| Hourly rate | $45 |
| Extra materials | $1,500 |
| Markup | 30% |
Worked Example
Using the example inputs above, the tool returns:
Added cost
$2,400
Change order price
$3,120
The Operator's Read
Charge about $3,120 for the change. Unbilled change orders are where trade profit disappears — a signed change order per scope shift fixes it.
Assumptions & Limitations
- •This is a single-point calculator — it answers one question at a time. For a full time-based projection, use the matching Toolkit Pro simulator.
- •Defaults are illustrative. Replace them with your real numbers before relying on the result.
- •Educational tool only — not financial, investment, tax, or legal advice.
Frequently Asked Questions
What does the Change Order Calculator calculate?
Enter the extra labor and materials plus your markup to price a change order properly. It takes 4 inputs — Extra hours, Hourly rate, Extra materials, Markup — and returns Added cost, Change order price.
How do I use the Change Order Calculator?
Enter your figures in the fields above and the result updates instantly. No signup, no limits, and nothing leaves your browser — the math runs on your device.
Is the Change Order Calculator free?
Yes, completely free. For the full time-based simulation — projection tables, scenarios, Excel/PDF export, and AI analysis — see the matching Toolkit Pro simulator.
Who built this tool?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. It uses the exact method they'd apply in an engagement.
Is this financial advice?
No. The Change Order Calculator is an educational tool for directional planning — not financial, investment, tax, or legal advice.
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The Crimson Bench · Est. 2002 · Founded in New York City
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