Construction math that keeps up with the jobsite.
Jobsite Calc is the no-nonsense calculator built for framers, remodelers, and tradespeople — unit conversion, fraction shop math, framing, rafter, and finishing tools, plus running cutlists, all in one app.
Built and maintained by Zuniga Labs.
Cutlist just got smarter about sheet goods.
1.4.0 adds sheet goods — drywall & plywood — as a Cutlist item type with automatic sheet-count math, plus photo & note attachments on any line item. Also new: a roofing calculator, siding & trim, concrete & masonry math, circular and trig calculators, a crown molding miter tool, and hip, valley & jack rafter support. Same one-handed speed, a lot more of the job covered.
Everything you need, none of the clutter.
A growing toolkit, one app. Built to be fast enough to use one-handed with a pencil behind your ear.
Convert
Instant unit conversion between imperial and metric — feet, inches, fractions, and millimeters without the mental math.
Shop Math
Add, subtract, and combine fractions the way they actually show up on a tape measure — 3/8 + 1/4, done instantly.
Circular & Trig New
Circumference, diameter, and area for round layouts, plus a full trig tab for angles and triangles.
Framing
Stud spacing, plate lengths, squaring, and stair stringer layout — the wall and floor math, calculated on the spot.
Rafters & Birdsmouth New
Pitch, run, and overhang for rafter length and cut angles, now with hip, valley & jack rafter support — plus a max birdsmouth depth based on your lumber size.
Concrete & Masonry New
Concrete volume in cubic yards plus bag counts for footings, slabs, and posts — know what to order before you mix.
Finishing New
Paint coverage, drywall/sheathing, a roofing calculator, siding & trim, and crown molding compound miters — the finish-out math, all in one segment.
Cutlist
Multiple saved projects, dimensional lumber and sheet good presets, photo & note attachments, running totals, material cost estimating, and PDF export/printing (Pro).
iPhone, iPad, Android phone, Android tablet — same app, tuned for each.
Not a phone app stretched onto a bigger screen. Built and tested on all four, so the layout fits whatever's in your hand or mounted in the truck.
Upgrade when you're ready for more.
Free to start, with a Pro tier for tradespeople who live in the app every day.
- ✓ Unlimited cutlist projects & items (free plan: 1 project, 10 items)
- ✓ Unlimited CSV exports (free plan: 3/month)
- ✓ PDF export, sharing & printing for your cutlists
- ✓ 1/32" fraction precision, plus remembers your settings per trade
- ✓ Priority feature requests and support
Jobsite Calc Pro
One upgrade, unlocked everywhere you work.
Built to solve a real problem, not chase a feature list.
It started as a spreadsheet, built to answer one simple request: help converting measurements. From there it grew, one real need at a time, into the calculator, the cutlists, and everything else the app does today — the kind of math that happens between measuring and cutting, not at a desk.
No bloat, no accounts required to get started, no clutter. Just the calculators tradespeople actually reach for, built to be fast enough to use mid-cut.
Get Jobsite Calc
Free to try right now on iPhone and Android.
iPhone link will first ask you to install Apple's free "TestFlight" app — that's normal, it's just how early access works on iPhone. Open it and Jobsite Calc installs right after.
Questions, feedback, or feature requests?
We read every message — whether it's a bug report from the field or an idea for the next calculator to build.