Construction
Calculate total linear feet from repeated lengths, optional extra runs, waste allowance and unit price for trim, boards, fencing, cable or edging.
Construction
Measured linear feet = piece length × quantity + extra feet. Allowance feet = measured linear feet × waste percent ÷ 100. Planning linear feet = measured linear feet + allowance feet. Optional estimated cost = planning linear feet × price per linear foot.
This is the method behind the answer, so the result can be checked rather than simply trusted.Visual grid
Length, area, volume and material estimates are grid problems too: measure the space, account for edges and allowances, then turn the pattern into a number you can use.
Space calculations turn a real surface, room, run or volume into cells, edges and allowances that can be quoted, ordered or checked.
CalculationTime
Measured linear feet = piece length × quantity + extra feet. Allowance feet = measured linear feet × waste percent ÷ 100. Planning linear feet = measured linear feet + allowance feet. Optional estimated cost = planning linear feet × price per linear foot.
Use this space on the printed report for client, supplier, classroom, job-location, measurement, quote or approval notes.
Measured linear feet = piece length × quantity + extra feet. Allowance feet = measured linear feet × waste percent ÷ 100. Planning linear feet = measured linear feet + allowance feet. Optional estimated cost = planning linear feet × price per linear foot.
For 12 runs at 8 ft each, repeated length is 8 × 12 = 96 ft. Add 6 ft of odd lengths to get 102 linear feet measured. A 10% allowance adds 10.2 ft, so the planning quantity is 112.2 linear feet. At 2.75 per linear foot, the material estimate is 112.2 × 2.75 = 308.55 before tax or delivery.
Master’s Tip: write down where the extra-feet number came from. Linear-foot mistakes often hide in returns, gates, corners, mitred cuts, board defects and supplier stock lengths rather than in the main wall or fence run.
Standard or basis: transparent length arithmetic using the international foot relationship for linear measurement. No building-code, supplier-pack-size or structural compliance is claimed; use drawings, product datasheets and local trade judgement before ordering.
Methodology & Accuracy
CalculationTime pages are built around visible arithmetic: the formula, assumptions, worked example and practical limitations are shown so the result can be checked rather than simply trusted.
Measured linear feet = piece length × quantity + extra feet. Allowance feet = measured linear feet × waste percent ÷ 100. Planning linear feet = measured linear feet + allowance feet. Optional estimated cost = planning linear feet × price per linear foot.
Standard or basis: transparent length arithmetic using the international foot relationship for linear measurement. No building-code, supplier-pack-size or structural compliance is claimed; use drawings, product datasheets and local trade judgement before ordering.
Where a calculator follows a named legal, trade or industry standard, that standard is cited visibly. Otherwise the page uses transparent general arithmetic and states its limits.Master’s Tip: write down where the extra-feet number came from. Linear-foot mistakes often hide in returns, gates, corners, mitred cuts, board defects and supplier stock lengths rather than in the main wall or fence run.
A linear foot is one foot of straight length. It does not include width or thickness, so 10 linear feet of trim means 10 feet along the trim run.
Multiply the length of each repeated run by the number of runs, add any extra odd lengths, then add a separate waste or cut allowance if you are planning an order.
No. Linear feet measure length only. Square feet measure area, so they need both length and width.
It depends on the job. Simple straight runs may need only a small allowance, while trim, fencing, decking edges and mitred work often need more for cuts, defects and stock lengths.
Yes, as a length and quote-note calculator. Check product width, pack size, fittings, posts, clips, joins, code requirements and installation details separately.
Linear-foot estimating is common because many materials are bought or quoted by length: trim, moulding, edging, cable, pipe, rope, fencing rails and boards. The arithmetic is simple, but the record matters because a single final length is only useful when the repeated runs, odd lengths and waste allowance travel with it.
A linear-foot total answers “how long is the run?” It does not answer how much wall, floor or surface area is covered. That is why this page points visitors to square-footage and board-foot calculators when width, thickness or volume matters.
Keeping measured length and allowance separate makes the estimate easier to audit. A homeowner, supplier or tradie can see the actual run length first, then decide whether the cut allowance is enough for corners, mitres, defects and available stock lengths.
The print view keeps the run length, quantity, extra feet, waste percentage, formula and optional price together. That makes it suitable for a supplier counter, classroom worksheet, site note or homeowner comparison before a final order is placed.
