StudSheet Sheets Concrete & masonry · Sheet S-37

Concrete steps calculator

3 concrete steps, 1′ 9″ rise: 1.56 cu yd of concrete, 4 rebar bars (#4 × 20′), the forms and base, and a 5′ × 4′ stoop. Forms, base, concrete (bags or a truck), rebar and the finish for a set of outdoor steps and their landing — with the frost and handrail rules where you live.

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Free, no account needed. Type your own sizes and every line is counted again.

Worked example · feet and inches (New Jersey) or metric (Ontario)

Sheet S-37 · Pour concrete steps (brick or stone facing optional)

3 concrete steps, 1′ 9″ rise

PRO STEP

Section and plan

Steps: 37″ each, 2 treads + the stoop
Concrete: 1.56cu yd; order 1.75
Rebar: 4#4 × 20′
Stoop: 5′ × 4′1′ 9″ up

Tools you need

Square shovel
Round-point shovel
Hand tamper
Wheelbarrow
Concrete rake (come-along)
Circular saw

21 tools on the Sheet, each marked own, buy or rent

What to buy 13 lines, each with its math
Buy	Item	How we got this
1.75 cu yd	Ready-mix concrete (delivered)4000 psi, 5–7% air	stoop 5′ × 4′ × 1′ 9″ (35 cu ft) + 2 steps 4′ wide (7 cu ft) = 42 cu ft, +10% for spills, rounded up to the next quarter yard (or 77 bags: 80 lb bag ≈ 0.6 cu ft (Quikrete)). Small loads carry a short-load fee at most plants — ask when you order.
23 bags	Base gravel (paver base)0.5 cu ft bags	28 sq ft of footprint × 4″, +20% because gravel compacts = 11.2 cu ft loose.
4 bars	Rebar #4 (½″)#4 × 20′	4 + 5 bars 12″ apart in the stoop, 4 along the noses, 4 up the steps — 3″ in from the faces, cut from 20′ bars with the least waste, lapped 20″ where a run is longer. Typical for a residential stoop; follow your plans where you have them.
8 chairs	Rebar chairs or dobies2″ chairs	About one every 3 ft under the stoop and two under each step, so the bars sit 2″ up in the concrete.
1 roll	Rebar tie wire16-gauge roll	Ties the bars where they cross.
3 boards	Form boards (2×8 to 2×12)2×8 ripped to 7″, beveled × 8′	3 riser forms (51″ for the steps, 63″ across the stoop), ripped to the riser height with the bottom edge beveled 45° so the tread below can be finished.
1 sheet	Plywood ¾″, 4×8¾″ 4×8	Both sides cut to the step profile, the stoop’s face beside the steps: 19 sq ft + 15% for cuts.
12 stakes	Wood stakes12″–18″	3 on each side form and 2 braces for each riser form.
1 box	Duplex (double-head) nails 16d	Through the stakes and braces into the forms; the second head makes stripping them easy.
1 gallon	Form release agentbrush or spray	On every form face before the pour so they strip clean.
4 strips	Expansion joint filler, 10 ft strips½″ × 4″ strips	Against the house wall, full height (1′ 9″, strips stacked), and where the bottom step meets a walk: the steps move on their own and can’t crack the foundation. 4 strips of 10 ft.
1 gallon	Concrete cure-and-seal compound	53 sq ft of tops, risers and sides at about 250 sq ft/gal, sprayed as soon as the sheen is gone.
1 gallon	Concrete sealer (penetrating)silane or siloxane	35 sq ft at about 150 sq ft/gal, after 28 days: keeps water and de-icing salt out.

Sheet S-37 · Pour concrete steps (brick or stone facing optional)

3 concrete steps, 533 mm rise

PRO STEP

Section and plan

Steps: 3178 mm each, 2 treads + the stoop
Concrete: 2.69m³; order 3
Rebar: 6#4 × 6.10 m
Stoop: 1.52 m × 1.22 m533 mm up

Tools you need

Square shovel
Round-point shovel
Wheelbarrow
Concrete rake (come-along)
Circular saw
Cordless drill/driver

21 tools on the Sheet, each marked own, buy or rent

What to buy 13 lines, each with its math
Buy	Item	How we got this
3 m³	Ready-mix concrete (delivered)32 MPa, 5–8% air	stoop 1.52 m × 1.22 m × 533 mm (0.99 m³) + 2 steps 1.22 m wide (0.20 m³) + frost walls (1.50 m³) = 2.69 m³, +10% for spills, rounded up to the next 0.25 m³ (or 212 bags: 30 kg bag ≈ 0.014 m³ (Sakrete)). Small loads carry a short-load fee at most plants — ask when you order.
23 bags	Base gravel (paver base)0.014 m³ bags	2.6 m² of footprint × 102 mm, +20% because gravel compacts = 0.32 m³ loose.
6 bars	Rebar #4 (13 mm)#4 × 6.10 m	4 + 5 bars 305 mm apart in the stoop, 4 along the noses, 4 up the steps, 2 around the frost footing — 76 mm in from the faces, cut from 6.10 m bars with the least waste, lapped 508 mm where a run is longer. Typical for a residential stoop; follow your plans where you have them.
8 chairs	Rebar chairs or dobies51 mm chairs	About one every 914 mm under the stoop and two under each step, so the bars sit 51 mm up in the concrete.
1 roll	Rebar tie wire16-gauge roll	Ties the bars where they cross.
3 boards	Form boards (2×8 to 2×12)2×8 ripped to 178 mm, beveled × 2.44 m	3 riser forms (1.30 m for the steps, 1.60 m across the stoop), ripped to the riser height with the bottom edge beveled 45° so the tread below can be finished.
1 sheet	Plywood 19 mm, 4×819 mm 4×8	Both sides cut to the step profile, the stoop’s face beside the steps: 1.7 m² + 15% for cuts.
12 stakes	Wood stakes305–457 mm	3 on each side form and 2 braces for each riser form.
1 box	Duplex (double-head) nails 16d	Through the stakes and braces into the forms; the second head makes stripping them easy.
1 × 3.78 L	Form release agentbrush or spray	On every form face before the pour so they strip clean.
4 strips	Expansion joint filler, 3.05 m strips13 mm × 102 mm strips	Against the house wall, full height (533 mm, strips stacked), and where the bottom step meets a walk: the steps move on their own and can’t crack the foundation. 4 strips of 3.05 m.
1 × 3.78 L	Concrete cure-and-seal compound	4.9 m² of tops, risers and sides at about 23.2 m² per 3.78 L, sprayed as soon as the sheen is gone.
1 × 3.78 L	Concrete sealer (penetrating)silane or siloxane	3.3 m² at about 13.9 m² per 3.78 L, after 28 days: keeps water and de-icing salt out.

Concrete & masonry · Sheet S-37 · 01What to buy (3 concrete steps, 1′ 9″ rise)

What to buy (3 concrete steps, 1′ 9″ rise)

Every line shows the quantity to buy and how StudSheet got it: the spacing, the waste and the package size, so you can check it before the supply house or the quote.

Buy	Material	How StudSheet counts it	What it is for
1.75 cu yd	Ready-mix concrete (delivered) (4000 psi, 5–7% air)	stoop 5′ × 4′ × 1′ 9″ (35 cu ft) + 2 steps 4′ wide (7 cu ft) = 42 cu ft, +10% for spills, rounded up to the next quarter yard (or 77 bags: 80 lb bag ≈ 0.6 cu ft (Quikrete)). Small loads carry a short-load fee at most plants — ask when you order.	Ordered by the cubic yard (by the cubic metre in Canada) from a local plant; the truck chutes it into the forms.
23 bags	Base gravel (paver base) (0.5 cu ft bags)	28 sq ft of footprint × 4″, +20% because gravel compacts = 11.2 cu ft loose.	Crushed stone with fines; compacts into a firm, level base.
4 bars	Rebar #4 (½″) (#4 × 20′)	4 + 5 bars 12″ apart in the stoop, 4 along the noses, 4 up the steps — 3″ in from the faces, cut from 20′ bars with the least waste, lapped 20″ where a run is longer. Typical for a residential stoop; follow your plans where you have them.	Grade 40 or 60 steel bar for driveway grids and footings. 10 ft bars fit in a car; 20 ft bars mean fewer laps.
8 chairs	Rebar chairs or dobies (2″ chairs)	About one every 3 ft under the stoop and two under each step, so the bars sit 2″ up in the concrete.	Plastic chairs or small concrete blocks that hold mesh or rebar at the right height while you pour.
1 roll	Rebar tie wire (16-gauge roll)	Ties the bars where they cross.	16-gauge annealed wire that ties bars where they cross and laps together.
3 boards	Form boards (2×8 to 2×12) (2×8 ripped to 7″, beveled × 8′)	3 riser forms (51″ for the steps, 63″ across the stoop), ripped to the riser height with the bottom edge beveled 45° so the tread below can be finished.	Straight construction lumber for deep forms: footings and thick slabs. Reusable when stripped clean.
1 sheet	Plywood ¾″, 4×8 (¾″ 4×8)	Both sides cut to the step profile, the stoop’s face beside the steps: 19 sq ft + 15% for cuts.	Ripped into treads and risers for stairs that get carpet (glued and screwed to every stringer so they don’t squeak), or cut into the side forms for concrete steps.
12 stakes	Wood stakes (12″–18″)	3 on each side form and 2 braces for each riser form.	Hold form boards in place.
1 box	Duplex (double-head) nails 16d	Through the stakes and braces into the forms; the second head makes stripping them easy.	The second head stays proud so forms come apart easily.
1 gallon	Form release agent (brush or spray)	On every form face before the pour so they strip clean.	Brushed or sprayed on the form faces before the pour so the boards and plywood strip clean.
4 strips	Expansion joint filler, 10 ft strips (½″ × 4″ strips)	Against the house wall, full height (1′ 9″, strips stacked), and where the bottom step meets a walk: the steps move on their own and can’t crack the foundation. 4 strips of 10 ft.	½″ asphalt-impregnated fiber strip that separates a new slab from the house, steps and old walks so they can move apart.
1 gallon	Concrete cure-and-seal compound	53 sq ft of tops, risers and sides at about 250 sq ft/gal, sprayed as soon as the sheen is gone.	Sprayed or rolled on right after finishing; it holds the water in so the concrete cures strong. About 200–300 sq ft per gallon.
1 gallon	Concrete sealer (penetrating) (silane or siloxane)	35 sq ft at about 150 sq ft/gal, after 28 days: keeps water and de-icing salt out.	Silane or siloxane sealer that keeps water and de-icing salt out of outdoor concrete. Goes on once the slab has cured.

In Canada (3 concrete steps, 533 mm rise)

Set to Canada, the Sheet works the job out again for Ontario: metric sizes, bag sizes, the frost depth and the code notes. It doesn't just convert feet to meters. The first lines:

3 m³, Ready-mix concrete (delivered): stoop 1.52 m × 1.22 m × 533 mm (0.99 m³) + 2 steps 1.22 m wide (0.20 m³) + frost walls (1.50 m³) = 2.69 m³, +10% for spills, rounded up to the next 0.25 m³ (or 212 bags: 30 kg bag ≈ 0.014 m³ (Sakrete)). Small loads carry a short-load fee at most plants — ask when you order.
23 bags, Base gravel (paver base): 2.6 m² of footprint × 102 mm, +20% because gravel compacts = 0.32 m³ loose.
6 bars, Rebar #4 (13 mm): 4 + 5 bars 305 mm apart in the stoop, 4 along the noses, 4 up the steps, 2 around the frost footing — 76 mm in from the faces, cut from 6.10 m bars with the least waste, lapped 508 mm where a run is longer. Typical for a residential stoop; follow your plans where you have them.
8 chairs, Rebar chairs or dobies: About one every 914 mm under the stoop and two under each step, so the bars sit 51 mm up in the concrete.
1 roll, Rebar tie wire: Ties the bars where they cross.
3 boards, Form boards (2×8 to 2×12): 3 riser forms (1.30 m for the steps, 1.60 m across the stoop), ripped to the riser height with the bottom edge beveled 45° so the tread below can be finished.

Concrete & masonry · Sheet S-37 · 02The steps, in order

The steps, in order

Call 811 (NJ One Call) at least 3 full business days ahead and wait for the utility markings. Check with your town about a permit and frost footings.
Dig the footprint; compact 4″ of gravel in 2″ layers.
Forms: side forms cut to the step profile, riser boards ripped to 7″ with the bottom edge beveled, braced; the isolation joint against the house. Oil every face.
Rebar on chairs, tied: #4 bars 12″ each way in the stoop, 2 bars along each nose; dowels into the foundation only where the town asks.
Pour: the stoop first, then the steps from the top down; strike off, float, and round every nose with the edger. Have the crew and the wheelbarrows ready before the truck comes.
Finish: broom across each tread; pull the riser forms once the concrete holds its shape (a few hours) and rub the risers smooth.
Cure: spray the cure-and-seal, or keep it damp under plastic for 7 days; strip the side forms after 1–2 days and backfill along the sides. Keep it from freezing for 48 hours.
Seal it after 28 days: one saturating coat of penetrating sealer, again every few years.

Concrete & masonry · Sheet S-37 · 03Tools (21)

Tools (21)

Must-have tools first, then the ones that help and the ones to rent for the day.

Tool	Need	Why
Square shovel	Must have	Cuts clean trench walls, moves gravel.
Round-point shovel	Must have	Digs the footprint
Hand tamper	Must have	Compacts the gravel in 2″ layers
Wheelbarrow	Must have	Moves the gravel and the concrete
Concrete rake (come-along)	Must have	Pulls the concrete out of the chute into the forms
Circular saw	Must have	Rips and bevels the riser forms, cuts the side forms
Cordless drill/driver	Must have	Drills holes, drives screws, mixes small batches.
Framing hammer	Must have	Drives the duplex nails and stakes
4-ft level	Must have	Every form level side to side, with a slight pitch forward
Mason's line + stakes	Must have	A tight string that sets a straight, level line for block courses.
Tape measure (25 ft)	Must have	The red boxes every 16″ on the blade are stud spacing.
Rebar cutter-bender	Must have	Cuts and bends the bars
Rebar tie tool	Good to have	Twists the ties fast; pliers work too
Concrete float + edger	Must have	Floats each tread and rounds every nose
Steel finishing trowel	Good to have	Smooths the risers once the forms come off
Concrete finish broom	Must have	A broom finish across each tread keeps it from being slick when wet
Pump sprayer	Must have	Sprays the cure-and-seal and the sealer
Rubber boots + waterproof gloves	Must have	Wet concrete burns skin: rubber boots and waterproof gloves
Safety glasses	Must have	Every cut, every nail, every time.
Work gloves	Must have	Tack strip, block and lumber shred hands.
N95 dust masks	Good to have	Dry mix is dusty when you open and dump the bags

Concrete & masonry · Sheet S-37 · 04Mistakes and how the math works

Mistakes and how the math works

Mistakes that cost a callback or a second trip

No isolation joint at the house: Steps poured tight to the foundation crack it, or lift and crack themselves, as the ground moves. A ½″ joint lets them move apart.
Uneven risers: More than ⅜″ between steps trips people and fails inspection. Mark every riser height on a story pole and measure each form.
Forgetting the nose edge: A sharp nose chips the first winter. Round every one with the edger while the concrete is soft.
Riser forms without a bevel: A square bottom edge hides the tread below so you can’t float it to the riser. Bevel each one 45°.
Pouring on loose fill: Fill settles and the steps tip away from the house. Dig to firm ground and compact the gravel in thin layers.

What the calculator assumes

IRC 2021 R311.7 (R318.7 in the 2024 IRC): risers ≤ 7¾″, treads ≥ 10″ (outdoor steps are usually 11–14″), ⅜″ max variation, a handrail 34–38″ at 4+ risers; guards over a 30″ drop (R312; R321 in the 2024 IRC).
Layout: 3 risers of 7″ and 2 treads of 12″; the stoop is the top step.
Concrete: solid steps (some masons fill a big core with compacted gravel or rubble) + 10%. 80 lb bag ≈ 0.6 cu ft (Quikrete); a truck above a cubic yard, rounded up to the next quarter yard (the Concrete Sheet’s rule).
Base: 4″ of crushed stone under the footprint, +20% loose. Rebar: #4 at 12″ each way in the stoop, 2 along each nose and up the steps, 3″ cover (typical for a residential stoop).
On grade: no frost walls counted.
Steps hung off the foundation (cantilevered or precast) aren’t counted here: they’re engineered.

Concrete & masonry · Sheet S-37 · 05Code, permits and safety

Code, permits and safety

The Sheet sets its code notes for the job's state or province. These are New Jersey's and Ontario's; the code reference has more. Always confirm with your building department.

Gravel base or frost footings: Steps on compacted gravel are common, but many towns require frost footings for steps attached to the house. Frost line: 36″ in Mercer/Middlesex and north, 30″ south. Confirm with your building department.
A truck pour needs a crew: A truck brings it all at once: plan a crew of 3–4, wheelbarrows, and forms braced to hold the weight, and finish each nose before it sets.
The stoop at the door: A landing at an exterior door is at least 36″ deep and as wide as the door, at most 1½″ below the threshold — 7¾″ where the door doesn’t swing over it (IRC R311.3; R318 in the 2024 IRC). Confirm with your building department.
Air-entrained concrete outside: Where winters freeze, steps take 3500 psi air-entrained concrete, 5–7% air (IRC Table R402.2). Bagged mixes usually aren’t air-entrained: seal them and keep de-icing salt off the first winter.
Call 811 first — it’s the law: In New Jersey, call 811 (NJ One Call) at least 3 full business days before digging. Free. Wait for the utility markings.
Ask your town about a permit: Repairing a stoop or steps with matching materials, where they don’t hold up a roof, is ordinary maintenance in New Jersey (N.J.A.C. 5:23-2.7(c)(1)(xiii)); for new steps, ask your town’s construction office.
Frost walls under the steps: Concrete steps with more than 2 risers need foundations below the frost line (NBC 9.12.2.2), on walls or piers at least 150 mm thick (NBC 9.8.9.2). This Sheet counts walls 203 mm thick on a 406 mm × 203 mm footing, 1.22 m down. Frost line: 1.2 m in Ontario municipal deck guides. Confirm with your building department.
Click Before You Dig: Before you dig, request a free utility locate from Ontario Dig Authority (ontariodigauthority.ca) at least 5 business days ahead, and wait for the markings.
Permit likely needed: New steps on foundations below the frost line usually need a building permit, often with an inspection of the footings before the pour. Ask your municipality’s building department.

Concrete & masonry · Sheet S-37 · 06Questions

Questions

What materials do I need to pour concrete steps?

For the worked example, a 3 concrete steps, 1′ 9″ rise, the Sheet counts 13 lines with waste included, starting with ready-mix concrete (delivered) (1.75 cu yd), base gravel (paver base) (23 bags), rebar #4 (½″) (4 bars), rebar chairs or dobies (8 chairs). Each line's math is in the table above. Put in your own sizes in the concrete steps calculator and every line is counted again.

How long does it take to pour concrete steps, and can I do it myself?

About 14 to 22 hours for the worked example, in 8 steps. StudSheet stamps it PRO STEP: dIY with a pro for one step.

What tools do I need to pour concrete steps?

21 in all. The must-haves start with square shovel, round-point shovel, hand tamper, wheelbarrow, concrete rake (come-along), circular saw. On the Sheet you mark each one as owned, to buy or to rent.

Concrete & masonry · Sheet S-37 · 07Ask about it

Ask about it

Stuck while you pour concrete steps? Ask in the Concrete steps group of the StudSheet community with this Sheet attached. Homeowners who've done it and verified pros answer, and anyone can read it.

Concrete & masonry · Sheet S-37 · 08More concrete & masonry Sheets

More concrete & masonry Sheets

Concrete and masonry for contractors: run this takeoff at your own prices, send the estimate, and get it signed and the deposit paid.
Build a garden or retaining wall (16′ wall, 2′ tall): Stack a block wall up to 4 ft: base, drainage, courses, caps.
Concrete slab or footings (10′ × 10′ slab, 4″ thick): Bags or ready-mix yards, gravel base, rebar or mesh and forms for a slab, a pad or footings.
Build a paver patio (16′ × 12′ paver patio): Excavation, compacted gravel base, 1″ of bedding sand, pavers, edge restraint and polymeric sand for a patio or walk — counted in bags or by the yard.
All 45 Sheets, across 16 trades.
Code reference: frost depths, guard heights, stairs, retaining walls.

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