Feet and Inches Calculator

Splendid Labs Inc.

In-app purchases

About this app

A construction calculator for the jobsite. Start with a feet and inches calculator that keeps fractions exact, then check concrete, square footage and roof pitch in the same app. No ads, no sign-up, no subscription, and it works offline. For tile, decking, board feet or drywall estimates, an optional one-time Pro Lifetime purchase unlocks 18 Pro tools.

FEET AND INCHES WITH EXACT FRACTIONS
Enter mixed measurements such as 12 ft 7-5/8 in on a dedicated feet-and-inches keypad. Add and subtract lengths, or multiply and divide a length by a number. Math stays exact: display precision from 1/2 to 1/64 inch changes only how a result is shown, and a rounded value is never carried into the next step. A calculation tape lists your steps, and four length memories (M1 to M4) hold measurements you reuse.

SIX FREE CONSTRUCTION TOOLS
• Feet & Inches: exact math with feet, inches and fractions.
• Length Converter: feet, inches, yards, millimeters, centimeters and meters.
• Area: a square footage calculator for rectangles, triangles and circles, with square yards and meters too.
• Volume: prisms and cylinders, with a cubic yard calculator for fill and excavation.
• Slope & Roof Pitch: rise and run, pitch per 12, slope percent or degrees.
• Concrete: slabs, footings and cylinders. Enter the yield printed on your bagged mix to get whole bags.

PRO LIFETIME — 18 PRO TOOLS
Pro Lifetime is an optional one-time purchase that unlocks 18 specialist tools; the six tools above stay free.
• Tile & Pavers: rows, columns, joints, spare pieces and whole boxes for a tile or paver layout.
• Decking: board rows, gaps and stock pieces to buy for a deck.
• Board Feet: board foot totals from nominal or actual sizes, with a material list and optional price.
• Drywall: whole sheets by area for walls and ceilings, with openings deducted and your own allowance.
• Brick & Block: modular area estimates or a full-unit grid fit with joints.
• Bulk Materials: gravel, soil or asphalt by volume, with weight from your supplier's density.
• Fence Layout: posts, bays, post spacing and rails for a straight run.
• Square & Diagonal: diagonals and 3-4-5 layout checks.
• Also included: Roofing Materials, Common Rafter reference geometry, Equal Spacing, Wainscoting & Panels, Running Measurements, Level Book, Trig & Angle, General Triangle, Arc & Circle and Regular Polygon.
Pro also lets you name saved calculations, keep extended history on this device and share selected records as CSV text.

TRY A PRO EXAMPLE BEFORE YOU BUY
Each Pro tool has a worked sample job you can open at no cost to see inputs, results and limits first.

ONE APP INSTEAD OF SINGLE-USE CALCULATORS
Instead of separate apps for concrete, tile, decking and drywall, every tool shares the same measurement entry, units, favorites and history. Each result shows your inputs, calculation steps, units and assumptions, and the app lists the published sources behind its formulas. Waste allowances are numbers you enter, never a hidden extra.

BUILT FOR THE TRADES
Carpenters, contractors, remodelers, landscapers and DIY builders who measure in feet and inches and need quantities before a supplier run.

FAVORITES HISTORY AND SHARING
Star the calculators you use often. Your latest 10 calculations stay on this device, and you can copy or share any single result as text.

PRICING AND OFFLINE USE
The six core tools are free with no ads. Pro Lifetime is a one-time purchase with no subscription; the store shows the price in your currency before you buy. Calculations run on your device without reception, and no app sign-up is needed. Buying and restoring need internet and the same store account, and iOS and Android purchases are separate.

DISCLAIMER
For geometry and quantity estimates only. This app does not certify structural safety, engineering design or building-code compliance. Verify measurements, manufacturer data and local requirements before you build.

What’s new

First release: six free tools for feet and inches, length, area, volume, roof pitch and concrete, plus 18 Pro tools unlocked by a one-time Pro Lifetime purchase.