Stringline
The Construction Calculator Built for the Field
Feet. Inches. Fractions. The way you read the tape.
Stairs, rafters, concrete, spacing, compound miters, and more. Every calculator a framer, GC, or concrete worker needs in one app.
Every answer comes with step-by-step verification. Check the work, catch mistakes, and learn the formulas behind the numbers.
IRC 2021, IRC 2024, and OSHA validation built in. Get instant pass/fail checks with section citations you can reference on the job.
Rise, run, stringer length, and building code validation.
Common, hip, and valley rafters with plumb and seat cuts.
Volume in cubic yards with bag count for slabs, footings, and columns.
On-center layout, gap widths, and member positions.
Stud count and exact positions for any wall length.
Solve sides and angles, check square on diagonals.
Board feet per piece and totals using actual or nominal sizes.
Square footage and perimeter for rectangles, circles, and triangles.
Imperial, metric, and decimal conversions in both directions.
Convert between pitch, degrees, grade percentage, and slope factor.
Blade tilt and miter angles for crown molding and trim.
Baluster count, gap width, and IRC code compliance.
Sheet count, waste factor, and deductions for openings.
Roofing squares, bundle count, and sheathing sheets.
Stringline speaks feet, inches, and fractions natively. Download it once, own it forever.