Blocking Quantity Calculator
Calculate the number and total length of blocking pieces needed between joists, studs, or rafters at a given spacing.
Free Framing Calculators
21 toolsWall framing, stud count, and rafter calculators. Browse our free framing tools below — no sign-up required.
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.