Door Cost Calculator
A Single Door Swap Is a Different Budget Problem Than a Whole House
Replacing one front door and re-doing every interior door in a home involve the same formula but land in very different price brackets, since interior doors are typically cheaper units with simpler hardware while exterior doors carry security hardware, weatherstripping, and often a higher material cost. Multiplying a single door's all-in cost by the count needed keeps either scenario simple to budget.
The Formula
Total Cost = (Doors × Cost per Door) + (Doors × Installation Cost per Door)
Where This Calculation Matters
- Whole-house interior door replacement — a consistent style and finish across every room adds up fast; this calculator totals the project in one step.
- Exterior door security and efficiency upgrades — a solid-core or steel exterior door costs more per unit but is frequently budgeted alongside its installation as a single line item.
- New construction and additions — builders price door packages by total count, making this formula directly usable for a full-house door schedule.
- Comparing pre-hung vs. slab-only options — a pre-hung door raises material cost but usually lowers installation labor; running both scenarios shows which is cheaper overall.
Total Cost by Door Count
At $350 per door and $250 installation per door:
| Doors | Material cost | Installation cost | Total |
|---|---|---|---|
| 1 | $350.00 | $250.00 | $600.00 |
| 3 | $1,050.00 | $750.00 | $1,800.00 |
| 5 | $1,750.00 | $1,250.00 | $3,000.00 |
| 8 | $2,800.00 | $2,000.00 | $4,800.00 |
How to Use This Calculator
- Enter the Number of Doors being replaced or installed.
- Enter the Cost per Door quoted for the unit itself.
- Enter the Installation Cost per Door for labor.
- Select Calculate to see the total material cost, installation cost, and combined total.
Related Calculations
Replacing windows in the same project? See the Window Cost Calculator, or fold the full scope into a broader budget with the Remodeling Cost Calculator.