Our free calculator uses recent, trusted data to estimate costs for your Hardwood Floor Installation project. For a basic 120 square feet project in zip code 47474, the benchmark cost to Install a Hardwood Floor ranges between $8.56 - $11.51 per square foot* .To estimate costs for your project: 1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased.2.or a basic 120 square feet project in zip code 47474, the benchmark cost to Install a Hardwood Floor ranges between $8.56 - $11.51 per square foot* . To estimate costs for your project: 1.