Metal Roof Cost Calculator

How the metal roof cost calculator works

There is no hidden pricing engine. The calculator multiplies your square count by the installed rate for the metal you pick, adds the cost of removing the old roof, then runs the same roof through architectural asphalt so you can see what metal costs against the usual alternative. Every rate below is published on our cost guides with its source.

Totals are rounded to the nearest $100, and per-square and per-year figures to the nearest $5, the rounding rules used across this site.

Check the default result by hand

The calculator opens on 18 squares of standing seam with one layer to remove. At the low end that is 18 × $900 = $16,200 for the roof plus 18 × $100 = $1,800 for removal, so $18,000. At the high end it is 18 × $1,600 = $28,800 plus 18 × $300 = $5,400, so $34,200. Divide each by 18 and you get $1,000 to $1,900 per square all in.

What each input changes

Roof size

Roof surface area is not house footprint. A 2,000 square foot house with a typical 6:12 roof has about 2,235 square feet of roof, and a steeper roof has more. Get this number right before anything else, because it multiplies every other figure on the page. The roof area calculator works it out from your footprint, pitch and overhang. The roofing square calculator also converts area into squares, but its bundle count is for shingles, so for a metal roof use the square count only.

Metal roof type

This is the input that moves the price most. The dropdown mixes systems and metals because our source prices them in one table, so it helps to know which is which. Corrugated or sheet metal is the exposed-fastener system, with screws driven through the face of the panel, and it is the cheapest. Standing seam hides its fasteners under raised seams, which is why most residential metal roofs use it and why it costs more. Metal shingles and stone-coated steel are pressed into shingle, shake or tile shapes for a conventional look. Zinc, stainless steel and copper are the architectural metals, bought for appearance and the way they weather, and copper costs two to three times as much as steel. The metal roof cost guide explains each option in more depth.

Old roof to remove

Removal runs $100 to $300 per square, and two layers mean twice as much to strip and haul away, so the calculator doubles that line. The same removal cost is added to the asphalt figure, because it is the same job whichever roof goes on afterwards. Whether a metal roof can go over your existing roof instead is a question for a contractor and your local building department. This calculator does not assume the answer, so choose "None" only if there is genuinely nothing to remove.

Metal against asphalt on the same roof

Metal always costs more up front. The argument for it is lifespan, so the fair comparison is cost per year of service: the total divided by how long the roof lasts. For metal the calculator divides the low total by 80 years and the high total by 30. For architectural asphalt it divides by 30 and 20. The result is two bands you can lay side by side.

On the default roof, standing seam costs $225 to $1,140 a year against $300 to $810 for asphalt. The bands overlap, so standing seam comes out ahead only if it lasts well into its range. Switch to corrugated and the same roof costs $10,800 to $27,000, or $135 to $900 a year, which undercuts asphalt at the low end and roughly matches it at the high end. Copper, at $25,200 to $59,400 for the same roof, costs $315 to $1,980 a year, which sits above asphalt across most of the band.

Two caveats apply to this arithmetic. First, it assumes you keep the house long enough to use the extra years, and most owners do not. Second, the 30 to 80 year range is published for metal as a whole, not per product, so a corrugated roof and a copper roof share one lifespan figure here even though they will not last the same in practice. For three-tab asphalt, which costs $300 to $500 per square and lasts 15 to 20 years, see the shingle roof cost guide.

What this calculator deliberately does not do

No gauge input. Gauge is the thickness of the metal sheet, and it does move the price within a metal type. Our source names gauge as a cost driver but does not publish prices by gauge, so there is nothing defensible to put behind a gauge dropdown. Expect a thicker gauge to cost more and dent less, and ask every contractor which gauge they are quoting so their bids are comparable.

No lifespan by metal. Our source gives one lifespan range for all metal roofs, so we do not invent separate figures for steel, zinc or copper.

No aluminum option. Aluminum usually costs somewhere between steel and copper, but our source does not price it separately, so it is not in the list.

No pitch or complexity multiplier. Steep and cut-up roofs cost more, and more so in metal: standing seam panels are cut to the length of each roof plane, so hips, valleys and dormers add more custom cutting and flashing than they would with shingles. No source we cite turns that into a per-square factor, so pitch is handled through your area input instead.

No state adjustment. Our source publishes one average range per state for a whole replacement, not a factor for metal. Readers in Florida, Texas and California can compare their result with the state page.

No materials and labor split. The metal alone runs $100 to $800 per square before installation, but that figure is not published for each metal type. Splitting the installed price using an assumed ratio would look more useful and be less true.

How to use the result

1. Treat the total as the range a reasonable quote should fall in, not as a price.
2. Compare each written estimate per square, since that is the figure you can actually compare between bids.
3. Ask each contractor to name the system, the metal and the gauge. Two bids for "a metal roof" can describe very different products.
4. Ask whether removal of the old roof is included, and how many layers they found.
5. Treat a bid far below the low end as a question rather than a bargain. It usually means a cheaper system or a smaller scope.

A difficult roof, a high-cost metro area or a premium finish can push a legitimate quote above a national range. The result is there to help you ask why, not to tell you what to pay.

Sources used on this page

• HomeGuide roof replacement cost guide, dated November 7, 2025. Metal roofing cost by type, roofing material prices per square, removal cost per square, asphalt shingle installed cost, and average roof lifespan by material. Every rate in this calculator comes from these tables.

The rates are also published, with fuller explanation, on our metal roof cost guide, shingle roof cost guide and roof replacement cost calculator. The cost-per-year figures are our own arithmetic on the rounded totals, shown under each result so you can check them. The methodology page explains how sources are used across the site and how often figures are reviewed.