How many linear feet does a tube of caulk cover?

By bead size, a 10.1 fl oz cartridge lays about 123.8 ft of 1/8 in bead, 55 ft of 3/16 in, 30.9 ft of 1/4 in, 13.8 ft of 3/8 in and 7.7 ft of 1/2 in. DAP quotes 55 ft at 3/16 in. Makers' own figures run a little lower in use (Sashco gives 26 ft at 1/4 in for a 10.5 oz tube), so the waste setting matters.

What bead size should I use?

Match the bead to the gap. Seams at tub and tile, baseboard and trim usually take 1/8 to 1/4 in; window, door and siding joints are often 3/8 to 1/2 in wide. A bead twice as wide uses four times the caulk, so cutting the nozzle too big is the most common reason a job runs out of tubes.

Why is a wider bead so much more caulk?

The cross-section grows with the square of the width. A 1/2 in round bead holds four times the caulk of a 1/4 in bead per foot, so one cartridge lays 7.7 ft instead of 30.9 ft.

How much caulk for a window or door joint?

Treat it as a joint, not a surface bead. A 3/8 in wide joint filled half as deep (3/16 in) takes about 21.6 ft per cartridge: 150 ft of joint with 10% extra is 8 cartridges. Joints wider than 1/4 in normally get foam backer rod first so the caulk is only as deep as its data sheet asks for.

Which tube size is cheapest?

The calculator shows the count for the other two sizes under the result so you can compare them against shelf prices. Large cartridges (28 fl oz) usually need a bulk caulk gun and suit long runs such as siding and expansion joints; 5.5 fl oz squeeze tubes need no gun and suit a few feet of tub or trim. We do not quote prices as a fact: the price band is an estimate and you can enter your own.

Is a "10.3 oz" or "10.5 oz" tube different from 10.1 oz?

Slightly: some brands fill 10.3 or 10.5 fl oz, about 2% to 4% more than 10.1. Using the 10.1 fl oz figure is a little conservative for them.

Do I need extra for a rough surface or a first-time job?

Yes. Tubes are never emptied perfectly, the first inches from a new nozzle are wasted, and beads on rough masonry, wood or siding run thick. Ten percent is a normal allowance; use 20% for rough or deep joints, a first job, or when the bead size will be hard to hold steady.

Caulk Calculator: How Many Tubes of Caulk Do I Need?

Caulking 200 linear ft of joint (80 ft around windows and doors, 20 ft at the tub and backsplash and 100 ft of baseboard) with a 1/4 in round bead takes 8 tubes of standard 10.1 fl oz caulk: 200 ft plus 10% waste is 220 ft, and one cartridge lays about 30.9 ft of 1/4 in bead. Feet per tube = the tube's volume (fl oz × 1.8047 cu in) ÷ the bead's cross-section ÷ 12; for a 1/4 in round bead that is about 31 ft per cartridge, 55 ft at 3/16 in and 124 ft at 1/8 in.

Figures based on the sources listed belowUpdated 2026-10-07How we calculate

Windows and doors (linear ft of joint)

Tub, shower and backsplash (linear ft)

Extra caulk

Standard (10%)Rough joints or first time (20%)Exact (0%)Custom

Baseboard and trim (linear ft)

The top edge of baseboard, crown and casing: the length of the seam you will caulk, not the number of boards.

Other joints (linear ft)

Siding and trim joints, countertop edges, expansion joints or anything else.

Bead size or joint widthThe bead you lay is about as wide as the nozzle opening you cut. Tub and trim seams are usually 1/8 to 1/4 in; window and siding joints are wider.

Bead or joint shapeA bead laid over a seam is round. A joint between two surfaces is filled to a depth: sealant makers usually call for about half the width in joints wider than 1/4 in, with backer rod below.

Tube sizeSizes are fluid ounces on the label. Cartridges for a caulk gun are 10.1 fl oz (some brands 10.3 or 10.5); squeeze tubes are hand-applied.

Price per tube (optional)

Buy 8 tubes

200 linear ft + 10% waste = 220.00 linear ft

Coverage per tube at this bead: 30.9 ft
Or in 5.5 oz squeeze tubes: 14 squeeze tubes (each lays 16.9 ft)
Or in 28 oz large cartridges: 3 large cartridges (each lays 85.8 ft)

Low

$32.00

Expected

$56.00

High

$112.00

Includes 20.00 linear ft waste

How this number is calculated

200 linear ft + 10% waste = 220.00 linear ft ÷ 30.9 linear ft per tube = 8 tubes

Shopping list

Caulk gun (dripless, smooth rod)
Paintable acrylic latex caulk with silicone
100% silicone kitchen and bath sealant
Caulk finishing tool kit
Backer rod for wide joints
Caulk remover
Painter’s tape

Show diagram

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Linear feet per tube by bead size

Feet one tube lays: volume ÷ cross-section. Round bead for the three tube sizes (the 10.1 and 5.5 fl oz figures at 3/16 in match DAP’s published 55 and 30 ft; the 28 fl oz column is an estimate), then the 10.1 fl oz cartridge in a joint filled as deep as wide (as in Sika’s table) and half as deep as wide. Real use runs a little lower, so keep the waste.
Bead or joint width	Round, 10.1 oz	Round, 5.5 oz	Round, 28 oz	Joint depth = width, 10.1 oz	Joint depth = ½ width, 10.1 oz
1/8 in	123.8	67.4	343.1	97.2	194.4
3/16 in	55	30	152.5	43.2	86.4
1/4 in	30.9	16.9	85.8	24.3	48.6
3/8 in	13.8	7.5	38.1	10.8	21.6
1/2 in	7.7	4.2	21.4	6.1	12.2

10.1 oz cartridges by length and bead

Round bead, 10% waste, rounded up, worked by this calculator. Add the runs first, then read down the total length.
Total length	1/8 in	3/16 in	1/4 in	3/8 in	1/2 in
25 ft	1	1	1	2	4
50 ft	1	1	2	4	8
100 ft	1	2	4	8	15
200 ft	2	4	8	16	29
400 ft	4	8	15	32	58

Methodology & assumptions

The runs you enter (windows and doors, tub and backsplash, baseboard and trim, other) are added into one length of joint, and the waste setting is added on top. Feet per tube = the tube's volume in cubic inches ÷ the cross-section of the bead or joint ÷ 12. A tube's volume is its label fluid ounces × 1.8047 cu in (one US fluid ounce is 29.57 mL), so a 10.1 fl oz cartridge holds about 18.2 cu in. A round bead has a cross-section of π/4 × diameter² (0.785 × diameter²); a joint filled as deep as it is wide is width²; a joint filled half as deep as it is wide is half of that. Tubes = the length with waste ÷ feet per tube, rounded up. This is the same geometry as the published charts: DAP's figures of about 55 ft from a 10.1 fl oz cartridge and 30 ft from a 5.5 fl oz squeeze tube, both at a 3/16 in bead, match it, and Sika's joint table for a 10.1 fl oz cartridge (24.3 ft at 1/4 × 1/4 in and 12.1 ft at 1/2 × 1/4 in) is the rectangular case. In use you get somewhat less than the geometry because of the nozzle, the cartridge bottom, uneven joints and tooling: Sashco, for one, quotes 26 ft of 1/4 in bead from its 10.5 fl oz tube, against about 32 ft here. The 10% standard waste covers most of that gap; take the 20% setting for rough or deep joints, or your first caulking job. A bead you lay is as wide as the opening you cut in the nozzle, so choose the bead size you will actually cut. Wide joints (over 1/4 in) are normally filled to about half their width with a foam backer rod below, which is why the half-depth joint is offered. The 5.5 oz squeeze tube and the 10.1 oz cartridge are checked against the DAP figures; the 28 fl oz cartridge is the same geometry and we did not find a maker's yield figure for it, so treat its yield as an estimate. Metric toggle shows lengths in m.

DAP, ALEX Plus Acrylic Latex Caulk Plus Silicone (white), Technical Data Sheet: 10.1 fl oz cartridge, 55 linear ft at a 3/16 in bead
DAP 18032 5.5 fl oz squeeze tube, retailer listing (Town and Country Hardware): 30 linear ft at a 3/16 in bead (a retailer page, not the data sheet)
Sika, Sikaflex Plus Construction Sealant product data sheet: linear feet per 10.1 fl oz cartridge by joint width and depth
Sashco Big Stretch 10.5 oz acrylic elastomeric caulk, retailer listing (Do it Best): 26 linear ft per 1/4 in bead
Standard unit conversion: 1 US fluid ounce = 29.5735 mL = 1.8047 cu in
The 28 fl oz large-cartridge yield is the same geometry as the checked sizes; no maker’s published figure was found (unverified estimate)
Half-width fill depth for joints wider than 1/4 in is common sealant-maker guidance: follow the depth on your product’s data sheet (a typical figure)
Typical US retail prices per cartridge, 2026 (unverified estimate)

How to calculate how much caulk you need

Measure each run. Measure the joint length around windows and doors, at the tub and backsplash, along baseboard and trim and anywhere else you will caulk, and add them up.
Choose the bead size. Pick the width of the gap or the nozzle opening you will cut: 1/8 to 1/4 in for seams, 3/8 to 1/2 in for wide joints. Choose a round bead or a joint with a fill depth.
Find the feet per tube. Divide the tube's volume (fluid ounces × 1.8047 cu in) by the cross-section of the bead and by 12 to get feet per tube, or read it from the table on this page.
Add waste. Add 10% for a normal job, 20% for rough joints or a first job.
Divide and round up. Divide the length with waste by the feet per tube and round up to whole tubes. Compare the count for the other tube sizes against shelf prices.

Worked examples

Project	Result
Whole room: 80 ft around windows and doors, 20 ft at the tub and backsplash, 100 ft of baseboard, 1/4 in round bead, 10.1 oz	200 linear ft + 10% extra → 8 tubes, 30.9 ft per tube
Bathroom: one 12 ft window, 30 ft of tub and tile joints and 6 ft at the vanity, 3/16 in round bead, 10.1 oz	48 linear ft + 10% extra → 1 tubes, 55 ft per tube
150 ft of window and door joints, 3/8 in wide filled half as deep, 10.1 oz	150 linear ft + 10% extra → 8 tubes, 21.6 ft per tube
600 ft of siding joints, 3/8 in wide filled half as deep, 28 oz large cartridges, 20% extra (28 oz yield is an estimate)	600 linear ft + 20% extra → 13 tubes, 59.9 ft per tube
180 ft along the top of baseboard, 1/8 in bead, 5.5 oz squeeze tubes	180 linear ft + 10% extra → 3 tubes, 67.4 ft per tube

Frequently asked questions

How many tubes of caulk do I need?: Add up the feet of joint, add 10% for waste and divide by the feet one tube lays at your bead size, rounding up. A standard 10.1 fl oz cartridge lays about 30.9 ft of 1/4 in bead, so 200 ft with 10% extra (220 ft) is 8 cartridges.
How many linear feet does a tube of caulk cover?: By bead size, a 10.1 fl oz cartridge lays about 123.8 ft of 1/8 in bead, 55 ft of 3/16 in, 30.9 ft of 1/4 in, 13.8 ft of 3/8 in and 7.7 ft of 1/2 in. DAP quotes 55 ft at 3/16 in. Makers' own figures run a little lower in use (Sashco gives 26 ft at 1/4 in for a 10.5 oz tube), so the waste setting matters.
What bead size should I use?: Match the bead to the gap. Seams at tub and tile, baseboard and trim usually take 1/8 to 1/4 in; window, door and siding joints are often 3/8 to 1/2 in wide. A bead twice as wide uses four times the caulk, so cutting the nozzle too big is the most common reason a job runs out of tubes.
Why is a wider bead so much more caulk?: The cross-section grows with the square of the width. A 1/2 in round bead holds four times the caulk of a 1/4 in bead per foot, so one cartridge lays 7.7 ft instead of 30.9 ft.
How much caulk for a window or door joint?: Treat it as a joint, not a surface bead. A 3/8 in wide joint filled half as deep (3/16 in) takes about 21.6 ft per cartridge: 150 ft of joint with 10% extra is 8 cartridges. Joints wider than 1/4 in normally get foam backer rod first so the caulk is only as deep as its data sheet asks for.
Which tube size is cheapest?: The calculator shows the count for the other two sizes under the result so you can compare them against shelf prices. Large cartridges (28 fl oz) usually need a bulk caulk gun and suit long runs such as siding and expansion joints; 5.5 fl oz squeeze tubes need no gun and suit a few feet of tub or trim. We do not quote prices as a fact: the price band is an estimate and you can enter your own.
Is a "10.3 oz" or "10.5 oz" tube different from 10.1 oz?: Slightly: some brands fill 10.3 or 10.5 fl oz, about 2% to 4% more than 10.1. Using the 10.1 fl oz figure is a little conservative for them.
Do I need extra for a rough surface or a first-time job?: Yes. Tubes are never emptied perfectly, the first inches from a new nozzle are wasted, and beads on rough masonry, wood or siding run thick. Ten percent is a normal allowance; use 20% for rough or deep joints, a first job, or when the bead size will be hard to hold steady.

Handy tools

Feet and Inches Calculator: Add up window, door and trim lengths measured in feet and inches and get the decimal feet the fields above take.