Calculator guide
Price a change order from labor, material, equipment, and markup. Use the explicitly labelled inputs below; rates, dimensions, and costs are assumptions, not live quotes.
Formula or method
Direct change cost = labor hours × loaded rate + materials + equipment. Change-order price = direct cost × (1 + markup/100).
How to use this calculator
- Set Labor hours (hr). The interface starts with 24; replace it with the value for your scenario.
- Set Loaded labor rate ($). The interface starts with 42; replace it with the value for your scenario.
- Set Materials ($). The interface starts with 750; replace it with the value for your scenario.
- Set Equipment and other cost ($). The interface starts with 200; replace it with the value for your scenario.
- Set Markup (%). The interface starts with 20; replace it with the value for your scenario.
- Compare the result with the worked example, then vary one assumption at a time so you can see what changes.
Worked example
Enter Labor hours = 24 hr; Loaded labor rate = 42 $; Materials = 750 $; Equipment and other cost = 200 $; Markup = 20 %. With those assumptions, the calculator gives Direct change cost: $1,958.00; Change order price: $2,349.60; Markup amount: $391.60; Labor extension: $1,008.00. These outputs are calculated from the same implementation as the interactive tool.
Understanding the result
In this example, Direct change cost is $1,958.00. Change order price is $2,349.60. Real-world schedules, fees, and local rules may differ from the assumptions entered in the tool.
Limitations and assumptions
- Real-world schedules, fees, and local rules may differ from the assumptions entered in the tool.
- The worked example demonstrates the stated assumptions, not a recommendation about your personal circumstances.
Frequently asked questions
Which inputs should I check first?
For Change Order Calculator, check Labor hours, Loaded labor rate, Materials, Equipment and other cost, Markup. Keep the displayed units and select options consistent; do not treat default values as recommendations.
Why might my result differ from another tool?
Compare the other tool's change order calculator method, input units, rounding and assumptions. A matching title does not guarantee that both tools answer the same question.
Does a linked reference certify this result?
No. A reference can explain a formula or provide background for Change Order Calculator, but it does not endorse this website, validate personal inputs or establish professional suitability.
Sources
Educational and planning information only. Sources are attributed background or formula references, not endorsements. Verify consequential decisions with an appropriate qualified professional.