Roof costs
Quoted unit-rate cost subtotal calculator
Calculate a subtotal from measured quantity and quoted unit rate. Material purchase or a separately quoted roof or gutter work scope.
Try the calculation
Enter a measured quantity and its quoted rate. Include only the work or material covered by that rate; no separate extras are added.
Adjustable example. Change these illustrative inputs to match your task, then recalculate. Reset restores the example and its result.
Understand the result
How this calculation works
A quoted subtotal multiplies a measured quantity by one rate for the selected unit.
Steps
- Choose the unit, enter the quantity and enter the quoted rate.
- Keep the quote scope attached to the rate.
The form starts with the worked example below. Change its values and selections to match your task; Reset restores the example.
Formula
subtotal = measured quantity × quoted rate per selected unit.
Variables and units
- Price unit (selected option)
- Options: Bundles; Panels; Square feet; Linear feet. Initial selection: Bundles.
- Measured quantity (selected unit)
- Required. Use a positive value. Starting example: 31. Replace it for your task. Use a whole number for bundles or panels; area and linear footage may be fractional.
- Quoted rate per selected unit ($ / selected unit)
- Required. Use a positive value. Starting example: 38. Replace it for your task.
What the result means
The result is a subtotal for the entered scope. Labor, disposal, tax and markup are not added automatically.
Worked example
Inputs: Measured quantity = 31; Price unit = Bundles; Quoted rate per selected unit = 38.
Calculation: 31 bundles × $38 per bundle = $1,178.
Result: 1,178 $.
Use a quoted rate per linear foot
Inputs: Price unit = Linear feet; Measured quantity = 7.5; Quoted rate per selected unit = 18.
Calculation: Choose linear feet. A measured 7.5 ft at $18 per foot gives $135; no package rounding applies to measured length.
Result: 135 $.
Frequently asked questions
Can the quantity be linear feet?
Yes, when the rate is quoted per linear foot.
Why must bundles be whole?
Package counts represent physical units.
Does the page create a market rate?
No. You provide a rate from a quote or product price.