Home renovation cost calculators
Free, no-signup renovation & remodeling calculators for homeowners, DIYers and buyers — bathroom and kitchen remodel cost, paint / drywall / flooring / tile material quantities, basement and addition cost per square foot, whole-house cost-per-sqft, and budget, contingency, ROI and loan math. Every tool works on the prices you enter and shows its formula, a worked example and a reference table.
Bathroom Remodel
What a bathroom remodel costs on your line items and prices: full remodel estimate, walk-in shower, tub-to-shower conversion, vanity, and tile area & cost.
All Bathroom Remodel tools →Kitchen Remodel
Budget a kitchen from the prices you enter: full remodel estimate, cabinet cost & refacing, countertop and backsplash square-foot cost, and an island.
All Kitchen Remodel tools →Interior Finishes
Material quantities and cost: paint gallons & painting cost, drywall sheets, flooring cost by material, tile installation, and trim/baseboard.
All Interior Finishes tools →Basement & Additions
High-intent per-sq-ft budgeting: basement finishing & remodel, room/home addition, sunroom, and a garage conversion / ADU budget.
All Basement & Additions tools →Whole-House & Cost per Sq Ft
The "how much to renovate a house" tools: whole-house and gut-renovation cost, a cost-per-square-foot normalizer, and a room-by-room roll-up.
All Whole-House & Cost per Sq Ft tools →Budget, Financing & ROI
Plan the money: budget allocator by %, a contingency planner, a renovation ROI / cost-vs-value ratio, and an illustrative loan-payment tool.
All Budget, Financing & ROI tools →Bathroom Remodel
Kitchen Remodel
Interior Finishes
Basement & Additions
Whole-House & Cost per Sq Ft
Budget, Financing & ROI
Built for the whole project — and to stay correct forever
RenovationCalcs gathers the calculations homeowners and buyers reach for across a whole project — room-by-room cost, material quantities, whole-house cost-per-square-foot, and budget & ROI — in one focused hub, in US units, without signup, with transparent formulas. Every tool shows not just the answer but the underlying formula, a worked example and a reference table.
Because the tools rest on timeless project math (area = length × width; material quantity = area ÷ coverage × (1 + waste); cost = quantity × your unit price) and stable conventions (a 4×8 drywall sheet = 32 sq ft; paint ~350–400 sq ft per gallon per coat; 10–15% waste on tile and flooring), they stay correct with no maintenance — no material price list, no labor-rate database, no regional cost index, no live loan rate. Cost tools use the prices you enter from your own quotes and bills. More at Sources & formulas, Methodology and About.
Estimates, not bids. Every cost result is a planning estimate — get itemized written quotes from licensed contractors; structural, electrical, plumbing and gas work needs licensed pros and a permit; the financing and ROI tools are illustrative math on your figures, not financial advice, and added resale value is never guaranteed.