Construction calculator for feet, inches and fractions — plus concrete, framing, stairs, roofing, drywall and tile. Punch in 12' 7-3/8" plus 4' 9-5/16" and get the answer in feet-inch-fraction, then work out the materials for the whole job. Every calculator is included at no cost. Go Pro to save jobs and share a materials list or quote as a PDF.
Built for framers, concrete and masonry crews, drywall and tile setters, remodelers and serious DIYers. Big keys, high contrast, readable on a bright jobsite. No ads.
Feet-inch-fraction calculator (free)
• Add, subtract, multiply and divide in feet, inches and fractions
• Precision from 1/2" down to 1/64"
• Length × length gives area; × length again gives volume
• Results in feet-inch-fraction, decimal feet, decimal inches and metric
Trade calculators (all included)
• Concrete — slab, footing, round column and wall: cubic feet, cubic yards, cubic meters, and 40 / 60 / 80 lb bags with a waste factor
• Studs — stud count and plate length from wall length, on-center spacing and openings
• Rafter calculator — rafter length, rise and angle from run and roof pitch, with plumb and seat cut angles
• Stairs — risers, riser height, treads, total run and stringer length. Max riser and min tread limits are yours to set; your local code may differ, so check it
• Roofing calculator — pitch factor, roof area, squares and bundles
• Board feet — board feet and optional lumber cost
• Drywall — sheets for 4×8, 4×10 or 4×12, plus estimated screws, tape and joint compound
• Tile — tile count, boxes, and grout joint width
• Conversions — length, area, volume and weight, imperial and metric
Saved jobs and PDF (Pro)
• Add any result to a job: name, client, address and notes
• Export a one-page materials list, or a quote with unit prices, subtotal and optional tax
• Share the PDF by text or email
• Jobs are stored on your phone and work offline — no account needed
• Your business name, phone and email on every quote
What's included, what's Pro
All calculators are included at no cost: the feet-inch-fraction calculator, concrete (slab, footing, wall, column), studs, rafters, stairs, roofing, board feet, drywall, tile and conversions. Construction Calculator Pro adds saved jobs and PDF materials lists and quotes with your business info.
Results are estimates to help you plan and order materials. Always verify measurements and quantities on site.
Subscription terms
Construction Calculator Pro is an optional auto-renewing subscription:
• Monthly: $2.99 per month, no free trial
• Yearly: $14.99 per year, includes a 3-day free trial for new subscribers
Payment is charged to your Google Play account at confirmation of purchase, or when the free trial ends. The subscription renews automatically unless you cancel before the end of the current period. Manage or cancel anytime in Google Play > Payments & subscriptions > Subscriptions.
Terms of Use: https://novaapps.dev/terms
Privacy Policy: https://novaapps.dev/privacy
Feet-inch fraction calculator plus concrete, framing, stairs, roofing and tile