Sixteenths
SixteenthsNow on the App Store
Feet. Inches. Sixteenths. Done.
The construction calculator that speaks tape measure — exact fraction math, ten jobsite solvers, and not a bar of signal required.
Free calculator · $39.99 unlocks everything
No subscription. Ever.
From tape measure to final cut without a math error.
Step 01Punch it in like you say it
Type 12' 6-3/4" the way you'd call it out across the room. Feet, inches, and fractions are first-class keys, bare numbers mean inches — and every value stays mathematically exact, never a rounded decimal.
Step 02Solve the whole job
Stairs, roof pitch, hips and jacks, concrete, balusters, compound miters. Each solver asks for what you already know and hands back the numbers you would otherwise work out on a scrap of drywall.
Step 03Keep every number
Every result lands on a persistent tape. Recall the exact value — not a rounded copy — days later, name the entries that matter, and feed them straight into the next calculation.
A calculator your crew can trust.
Built to go head-to-head with the calculator that has lived in tool pouches for thirty years — same trusted answers, none of the 1990s hardware.
Exact fraction math
Every value is stored as an exact fraction, not a floating-point decimal. Add 3/16 a hundred times and it is still dead on — results never drift a sixteenth.
Ten solver modes
Roof pitch, hip & jacks, stairs, balusters, concrete, circle & arc, compound miter, materials, board feet — plus the calculator itself.
Fully offline
No account, no sign-in, no cloud. The whole app works in a basement, a crawlspace, or forty miles past cell coverage.
A tape that remembers
Every result is saved to a persistent tape with its exact value. Recall it tomorrow at a different fraction resolution and it is still right.
Pay once
The calculator is free forever. One purchase of $39.99 unlocks every solver and every future function. No subscription. Ever.
Every solver the jobsite actually asks for.
Framing, finish, flatwork. Each mode takes the measurements you have and returns the cut list, the count, or the order quantity — in feet, inches, and fractions.
Ten solver modes
From ridge cut to first riser, without leaving the calculator.
1/16″
Exact to the sixteenth — down to 1/64 when you need it.
Also on board
- Yards & meters
- Degrees-minutes-seconds
- Stud counts
- Board feet
- Weight per volume
Roof Pitch
Hip & Jacks
Stairs
Concrete
Balusters
Even spacing, zero guesswork
Circle & Arc
Compound Miter
+ materials
& board feet
Common questions.
The short version — for anything else, the privacy policy and terms cover the details.
Pay once.
Yours forever.
The calculator and tape are free, fully usable, forever. One purchase unlocks every solver — and every function we ship after it. No subscription. Ever.
Free download · $39.99 unlocks everything