Free flooring calculators
3 free flooring calculators for the parts most estimates forget: underlayment rolls, baseboard and shoe molding lengths, and what it costs to refinish hardwood instead of replacing it. Figures come from manufacturer specs and named cost guides.
Updated · By the Interior Redesign AI editorial team · Sources cited on the page
Materials
Underlayment and trim quantities, with waste.
Cost
Refinish or replace: what the floor work costs.
How we calculate
Each tool does plain, visible arithmetic in your browser, with no AI and no server call, and shows its formula, a worked example and its sources on the page. Code figures cite the model code section, quantities cite the manufacturer's published spec, and prices cite a named cost guide with the date we checked it.
Where we had to assume something, the page says so and the widget lets you change it. Results are planning numbers, not quotes or code rulings.
More tools for this project
- Flooring Calculator · Square footage, waste, boxes and installed cost.
- Tile Calculator · Tiles and boxes for any floor or wall.
- Rug Size Calculator · The right rug for the room.
- All free tools · kitchen, bathroom, paint, flooring, outdoor, exterior and room planning.
Then see it on your room
The same photo, before and after an AI render. Your walls, windows and layout stay; the finishes change.
Questions
Are these flooring tools free?
Yes. They run in your browser, cost nothing and need no account.
Where do the numbers come from?
Roll and piece sizes come from manufacturer product pages; costs from named national cost guides. Each page links its sources and says what is an assumption.
How do I get square footage and boxes?
Use the flooring calculator for the floor itself; the tools here cover the underlayment, trim and refinishing around it.