Wall framing, stud count, and rafter calculators. Browse our free framing tools below — all calculators are instant, accurate, and require no sign-up.
Blocking Quantity Calculator — Calculate the number and total length of blocking pieces needed between joists, studs, or rafters at a given spacing.
Collar Tie Calculator — Calculate collar tie length, spacing, and placement height for rafter roofs. Ensure your collar ties meet IRC structural requirements.
Header Size Calculator — Determine the correct header size for door and window openings based on span and load. Quick lookup for residential framing headers.
Hip Rafter Calculator — Calculate hip rafter length, backing angle, and compound miter cuts for hip roof framing. Supports standard and irregular hip roofs.
Joist Hanger Selection Calculator — Select the right joist hanger based on joist size, load requirements, and installation angle. Reference guide for residential framing.
Joist Spacing Calculator — Calculate the number of floor or ceiling joists needed for a given span and on-center spacing. Includes rim joist and blocking counts.
Nail Schedule Calculator — Look up IRC nailing requirements for framing connections. Covers joists, rafters, studs, plates, and sheathing with nail size and spacing.
Plywood / OSB Sheet Calculator — Calculate the number of plywood or OSB sheets needed for roofing, walls, or floors. Accounts for waste factor and sheet size.
Purlin Spacing Calculator — Calculate the number of purlins and total linear feet for metal roofing or tile installations. Supports various purlin spacings.
Rafter Length Calculator — Calculate rafter length from roof run, rise, and overhang. Includes birdsmouth cut depth and total rafter stock length needed.
Rafter Pitch Calculator — Convert between roof pitch ratio, degrees, and percentage. Enter rise and run to calculate pitch in all common formats.
Ridge Board Length Calculator — Calculate ridge board length for gable and hip roofs. Includes gable overhang extensions and recommends ridge board depth.
Rim Board Calculator — Calculate the rim board material needed for floor perimeters. Estimate lineal feet, sheets, and cost for LVL or OSB rim board.
Roof Truss Count Calculator — Calculate the number of roof trusses needed for your building. Includes gable-end trusses and standard spacing options.
Screw Pattern Calculator — Calculate the number of structural screws needed for ledger boards, decks, and heavy connections based on spacing and pattern.
Stud Count Calculator — Calculate the number of wall studs needed for framing. Enter wall length, spacing, and openings to get an accurate stud count for your project.
Stud Spacing Calculator — Calculate wall stud spacing from the number of studs and wall length. Verify your framing meets code-required on-center spacing minimums.
Subflooring Sheet Calculator — Calculate plywood or OSB subflooring sheets needed for your floor area. Includes waste allowance and tongue-and-groove options.
Valley Rafter Calculator — Calculate valley rafter length and angles where two roof planes intersect. Supports equal-pitch and unequal-pitch valley configurations.
Wall Plate Material Calculator — Calculate total linear feet of wall plates needed for framing. Accounts for double top plates, sole plate, and splice waste.
Wall Sheathing Calculator — Calculate the number of sheathing panels needed for exterior walls. Accounts for window and door openings and waste.