Quelle taille de téléviseur ?
Distance du canapé + ce que vous regardez — la diagonale qui convient vraiment.
- Gratuit, sans inscription, sur tous les appareils.
Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.
What Size TV Do I Need?
Couch distance + what you watch — the screen size that actually fits.
The room
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How Much Yarn Do I Need?
Project + size + yarn weight → yards, meters and the exact skein count.
Lumber Board-Feet Calculator
Dimensions × quantity = board feet, cost and the buy list.
How Many Bags of Concrete?
Slab dimensions → cubic yards → exact 80 lb bag count.
Roofing Calculator – Squares, Bundles & Felt
Calculate roofing materials needed for your project. Our free roofing calculator estimates shingles, underlayment, and insulation quantities. Perfect for contractors and DIYers planning roof installations or replacements.
Labor Cost Calculator – Hours × Rate × Crew
Calculate labor costs for construction projects. Our free labor cost calculator estimates worker wages, hours, and total workforce expenses. Essential for accurate project bidding and budget planning.
Insulation Calculator – Batts, Rolls & R-Value
Calculate insulation materials needed for thermal and sound control. Our free insulation calculator estimates fiberglass, foam, and batts required. Perfect for energy efficiency and noise reduction projects.