The Best Flat Irons That Can Also Curl

Yes — a flat iron can curl hair, and the specification that decides how well is the shape of its outer edges, not its temperature. The iron to buy is the ghd Platinum+, because it is the only one here whose maker publishes the geometry and the claim together: a wishbone hinge and a round barrel that ghd states "enables versatile, snag-free styling to create sleek styles, curls, or waves". If that is out of budget, the CHI Original is sold for exactly this job — CHI describes it as a tool to "straighten, curl, or flip" — at a fraction of the price.

The reason this question has a real answer rather than a shrug is that curling with an iron is a rotation. You clamp a section, turn the tool a half-turn or more, and draw it down the length of the hair. The hair has to slide around the outside of the housing while that happens. If the edge it slides over is square, it leaves a crease or catches; if it is round or curved, it does not. That is the whole mechanism, and it is a geometry problem rather than a heat problem.

How we judged this list

Criteria first, and they are not the criteria a straightening roundup uses. An iron that straightens beautifully can be a poor curler, and the reasons are all mechanical:

1. 1The shape of the outer edge. A rounded barrel or a curved plate edge is what lets hair wrap without creasing. This is the single criterion that decides the ranking, and only two makers here publish it: ghd states a round barrel, Paul Mitchell states curved-edge plates. Nobody publishes an edge radius, which is the number that would actually tell you the curl diameter.
2. 2Plate width. A curl needs the tool to rotate inside the section. At 1 inch to 1.25 inches that is comfortable; at 2 inches the iron is a plank and the rotation stops being possible. Four of these five are 1 inch or 1.25 inches by published spec.
3. 3Plate LENGTH, which almost nobody thinks about. A long plate resists the turn — more surface has to travel through the arc. This is the one criterion where the site's best straightener is the worst curler: the BaBylissPRO Nano Titanium's published extra-long 5-inch plates are exactly what makes it fast at straightening and awkward at curling.
4. 4Controls you cannot knock mid-turn. When you rotate an iron, your palm slides across its body — and on most irons that is where the temperature buttons live. A lock, or recessed buttons, is worth more here than on any straightening page. Exactly one iron here publishes a temperature lock.
5. 5What the cord does. You are turning the tool through 180 degrees or more, repeatedly. A short or non-swivel cord fights you. A long swivel cord helps; no cord at all helps most, which is the quiet argument for the Dyson.

Quick picks

Ranked, with the reasoning underneath. Tap any row to jump to that write-up; tap the price to check it on Amazon. Prices come from the live layer, never from this page.

#	Product	Best for	Type	Price
1	ghd platinum+ StylerOne temperature, 365F, held by a sensor system reading 250 times a second. It is the opposite design philosophy to a 450F iron and it is the better one.	A single temperature chosen for hair health, not marketing	Predictive-heat iron	$319.00 · Amazon#ad
2	Paul Mitchell Smooth+ Ceramic Flat Iron (1.25 in)A 1.25-inch plate and a 410F ceiling: wider than the standard inch so it covers more hair per pass, and capped below the 450F irons that exist to win a spec sheet.	Long, thick hair where plate width saves passes	1.25-inch ceramic iron	$130.00 · Amazon#ad
3	CHI Original 1-inch Ceramic Hairstyling Iron (GF1001)A single preset of 392F and no dial at all, which removes the most common way people damage their hair: turning it up because the first pass did not work.	One fixed, sensible temperature and nothing to get wrong	Single-temperature ceramic iron	$39.57 · Amazon#ad
4	Dyson Corrale StraightenerFlexing manganese-copper plates gather the hair instead of squashing it, which is a mechanical route to the same result at a lower number on the dial.	Getting a result at a lower temperature	Cordless flexing-plate iron	$399.99 · Amazon#ad
5	Remington Pearl Pro 1-inch Ceramic Flat Iron (S9500PP)The only iron in the sub-$50 bracket that pairs a digital set point with a temperature lock, which is the feature that stops the dial creeping while you work.	Digital control with a temperature lock	Digital ceramic iron	$29.99 · Amazon#ad

#1 · A single temperature chosen for hair health, not marketing

ghd platinum+ Styler

One temperature, 365F, held by a sensor system reading 250 times a second. It is the opposite design philosophy to a 450F iron and it is the better one.

Published specifications for the ghd platinum+ Styler, each linked to its source

Temperature	Optimized constant 365F across the platessource
Heat regulation	Ultra-zone predictive technology monitors heat 250 times a secondsource
Adaptation	Recognizes hair thickness and speed of styling and adjusts accordinglysource
Plates	Precision-milled ceramic plates with a wishbone hinge and round barrelsource
Auto shut-off	After 30 minutessource
Voltage	Universal voltagesource

What those numbers mean

365F as a fixed target is a deliberate rejection of the specification race. It sits under every temperature the thermal-damage literature associates with cortex damage, and the tool simply will not let you go higher.

The interesting part is the 250-readings-per-second control loop. A conventional iron cools when cold hair hits it and then overshoots on the way back; a fast loop holds the number, which is why one pass at 365F can beat two at 400F.

ghd publishes percentage claims about stronger hair, more shine and color protection. Those are the manufacturer's own claims from their own testing, and we are not in a position to verify them, so treat them as positioning rather than data.

What it does well

• One well-chosen temperature, under every threshold in the cited research
• 250 temperature readings per second, the fastest control loop published here
• Rounded barrel makes curls and waves possible with the same tool
• Universal voltage and a 30-minute auto shut-off

What it does not

• No adjustment at all, so very coarse hair may need more passes
• Premium price for a single-temperature tool
• The percentage benefit claims are the manufacturer's own and unverifiable from outside

Skip this one if: Skip it if you have dense, coarse or 4C hair and want a silk-press result in one pass. 365F is a health-first ceiling, and on that hair type it will mean revisiting sections.

$319.00 · View on Amazon

#ad · how this is funded · price as of October 24, 2026

#2 · Long, thick hair where plate width saves passes

Paul Mitchell Smooth+ Ceramic Flat Iron (1.25 in)

A 1.25-inch plate and a 410F ceiling: wider than the standard inch so it covers more hair per pass, and capped below the 450F irons that exist to win a spec sheet.

Published specifications for the Paul Mitchell Smooth+ Ceramic Flat Iron (1.25 in), each linked to its source

Temperature	Customizable heat settings up to 410Fsource
Plates	1.25-inch cushioned ceramic plates with beveled edgessource
Heat-up	Up to 410F in 60 secondssource
Voltage	Automatic dual voltage, for worldwide usesource
Display	Large digital temperature displaysource
Auto shut-off	Automatic one-hour shut-offsource
Cord	9 ft professional swivel cordsource

What those numbers mean

The quarter inch of extra plate width sounds like nothing and is roughly a quarter fewer passes down a long section. Passes are the damage variable you control, so plate width is a hair-health specification disguised as a convenience one.

Capping at 410F instead of 450F is a choice we would like to see more of. Nothing about the extra 40 degrees produces a better result; it produces a better bullet point.

A digital display means you actually know the number. Irons with a dial marked low-to-high are asking you to guess, and people guess high.

What it does well

• 1.25-inch plates cover more hair per pass
• 410F ceiling rather than a spec-sheet 450F
• Digital display shows the real number
• One-hour auto shut-off and a 9-foot cord

What it does not

• Too wide for a fringe, short layers or edges
• 60-second heat-up is slower than the brushes here
• Paul Mitchell does not publish a low-end temperature figure

Skip this one if: Skip it if your hair is short, or if you style a fringe and face-framing pieces. A 1.25-inch plate cannot get close to the root on short sections without touching skin.

$130.00 · View on Amazon

#ad · how this is funded · price as of October 24, 2026

#3 · One fixed, sensible temperature and nothing to get wrong

CHI Original 1-inch Ceramic Hairstyling Iron (GF1001)

A single preset of 392F and no dial at all, which removes the most common way people damage their hair: turning it up because the first pass did not work.

Published specifications for the CHI Original 1-inch Ceramic Hairstyling Iron (GF1001), each linked to its source

Temperature	Pre-set 392F (202C), not adjustablesource
Plates	1-inch ceramic floating platessource
Cord	11 ft swivel cordsource
Voltage	Dual voltagesource
Weight	1.4 lbsource
Warranty	2-year limited warrantysource

What those numbers mean

A fixed 392F is a design decision with a real argument behind it. It sits above the range dermatological guidance points fine hair toward and below the 450F that irons advertise, so it is a defensible single answer for medium and coarse hair.

It is also the reason this iron is wrong for fine or bleached hair. There is no way to turn it down, and 392F on hair that snaps when you brush it wet is not a setting anyone should be using.

An 11-foot cord is the longest here and it changes where you can stand. Combined with dual voltage, this is a genuinely travel-capable professional iron.

What it does well

• One temperature means one fewer way to damage your hair
• 11-foot swivel cord, the longest in this roundup
• 1.4 lb, with the weight published
• Dual voltage

What it does not

• No temperature control at all, which rules out fine and fragile hair
• Ceramic plates heat more slowly than titanium on coarse hair
• No auto shut-off published
• CHI publishes no heat-up time, only a "flash-quick heating" claim

Skip this one if: Skip it if your hair is fine, bleached or already breaking. A locked 392F cannot be turned down, and this is exactly the temperature that hair should not be seeing.

$39.57 · View on Amazon

$100.00 · 60% off

#ad · how this is funded · price as of October 24, 2026

#4 · Getting a result at a lower temperature

Dyson Corrale Straightener

Flexing manganese-copper plates gather the hair instead of squashing it, which is a mechanical route to the same result at a lower number on the dial.

Published specifications for the Dyson Corrale Straightener, each linked to its source

Heat settings	Three settings — 330F, 365F and 410Fsource
Plates	Flexing plates engineered from a manganese copper alloysource
Heat regulation	Integrated sensor system regulates plate temperature 100 times a secondsource
Power	4-cell lithium-ion battery, cord-freesource
Auto shut-off	Switches off after 10 minutes of inactivitysource

What those numbers mean

Rigid plates only touch the outside of a section, so the hair in the middle needs more heat or more passes. Plates that flex to gather the section apply pressure across all of it, which is why the same style lands at a lower setting.

Three published temperatures is the disclosure that matters, and 330F is a genuinely usable low setting rather than a token one.

Cordless is a convenience feature with a real cost: a battery has a runtime and a lifespan, and both are finite in a way a cord is not.

What it does well

• Three published temperatures including a low, usable 330F
• Flexing plates are a real mechanism rather than a coating claim
• Cordless, which makes back sections and travel genuinely easier
• Plates lock and it shuts off after ten minutes

What it does not

• Battery runtime limits a long styling session
• The most expensive straightener in this roundup by a wide margin
• A battery is a wear part; a corded iron has none

Skip this one if: Skip it if you style at home beside an outlet and never take an iron anywhere. You would be paying a large premium for cordless operation you will not use, and the flexing-plate benefit alone is unlikely to justify it.

$399.99 · View on Amazon

$539.99 · 26% off

#ad · how this is funded · price as of October 24, 2026

#5 · Digital control with a temperature lock

Remington Pearl Pro 1-inch Ceramic Flat Iron (S9500PP)

The only iron in the sub-$50 bracket that pairs a digital set point with a temperature lock, which is the feature that stops the dial creeping while you work.

Published specifications for the Remington Pearl Pro 1-inch Ceramic Flat Iron (S9500PP), each linked to its source

Temperature	450F maximum, digital salon-high heatsource
Plates	1-inch floating plates, ceramic infused with crushed pearlsource
Heat-up	15 secondssource
Controls	Digital controls with LED temperature display and temperature locksource
Auto shut-off	60 minutessource
Ions	Evenly-distributed ionic heatsource
Warranty	3-year limited warrantysource

What those numbers mean

The temperature lock is the reason this leads the bracket. Cheap irons put the controls where your palm sits, and a set point that drifts upward mid-style is how people end up ironing at 450F without choosing to. Locking it is a thirty-dollar feature doing a two-hundred-dollar job.

What Remington does NOT publish is where the range starts. The 450F ceiling is stated and the floor is not, so if your hair needs a genuinely low setting you cannot confirm from the spec sheet that this iron offers one.

A 3-year warranty at this price is the longest here and it is the most honest durability signal available at the bottom of the market, where build quality is exactly what gets cut.

What it does well

• A temperature lock, which almost nothing under $50 has
• Digital set point with an LED readout rather than a numberless dial
• Floating plates and a 15-second heat-up
• 3-year limited warranty, the longest in this bracket

What it does not

• The bottom of the temperature range is not published, only the 450F top
• 450F is above both the cuticle and cortex damage thresholds in the research
• Remington publishes no cord length, weight or dual-voltage figure
• Pearl infusion is a coating claim with no published performance figure behind it

Skip this one if: Skip it if you need a confirmed low setting. The ceiling is published and the floor is not, so for bleached or breaking hair the Shine Therapy's stated 300F start is the safer purchase.

$29.99 · View on Amazon

$36.99 · 19% off

#ad · how this is funded · price as of October 24, 2026

Who publishes what, side by side

This is the whole argument of the page in one table. The middle column is the manufacturer's own wording, not our paraphrase, and the blanks are real blanks.

Two findings come out of that. The first is that a curl claim and a published geometry are not the same thing, and only two irons here have both — which is why they are first and second. The second is that the cheapest iron on this page is sold for this job and the second-cheapest is not: CHI puts curling in its headline product description, and Remington, at a similar price, says nothing about it anywhere.

Why a long plate is a bad curler

This is the counter-intuitive one, and it is worth stating plainly because it inverts the usual advice. Longer plates make an iron better at straightening and worse at curling. More plate covers more hair per pass, which is why flat irons for thick hair lean long — but every extra inch of plate has to travel through the arc when you rotate the tool, and it has to do so without the far end snagging.

The clearest example on this site is the BaBylissPRO Nano Titanium, whose published extra-long 5-inch plates are the reason it is our thick-hair pick and the reason it is not on this page. If you own one and your curls keep coming out as bends, the tool is the explanation — the full review reads its spec sheet, including the manual's mapping of all fifty dial settings to degrees.

• 1 inch wide, standard length — the most curl-capable shape, and what four of these five are.
• 1.25 inches — still turns comfortably, and covers more hair when you are straightening. The best compromise if the iron will do both jobs.
• 1.5 inches and up — straightening tools. Paul Mitchell sells a 1.5-inch XL version of our number two pick and states it is for long, thick, coarse and curly hair; that width is a passes-per-head decision, not a curling one.
• 2 inches — no. At that width the rotation is not available to you, regardless of edge shape.

The cordless argument, which is specific to curling

Dyson's cord-free design reads like a convenience feature on a straightening page and behaves like a mechanical one here. Curling is rotation, and a cord resists rotation: it twists, it shortens, and it pulls the tool back toward the outlet exactly when you are trying to hold an arc steady at the back of your head.

Dyson publishes up to 30 minutes of cord-free styling and a 70-minute full recharge, and recommends docking the tool between sections to extend the run time. It also publishes three named temperatures — 330F, 365F and 410F — and a sensor system regulating plate temperature 100 times a second, so the lower settings are a number rather than a knob position. The full Corrale review covers the rest, including the footnote under its damage claim, which compares the Corrale to itself rather than to another brand.

For everyone else, cord length is the proxy, and it is published more often than edge shape is: Paul Mitchell states a 9-foot professional swivel cord, ghd states 8.8 feet, and the CHI's 11-foot swivel cord is the longest on this site.

The temperature question, answered for curls

A curl holds the hair against the plates for longer than a straightening pass does, so the thermal arithmetic is different even at the same setting. Published research reports cuticle degradation beginning around 302F and cortex damage from around 392F.

The honest consequence: the fixed-temperature irons here are not for fine or bleached hair, on this page or any other. 365F and 392F cannot be lowered, and hair that is fragile wants 250-300F — a range most irons will not reach at all. Flat irons for fine hair is the low-floor shortlist and flat irons for damaged and bleached hair ranks on published ceilings. The full chart is in flat iron temperature by hair type.

How the curl is actually made

The technique matters as much as the tool, and it is the part people get wrong before blaming the iron. None of this is on a box.

1. 1Bone-dry hair, no exceptions. Wet keratin is reported to denature between 120C and 150C — 248F to 302F — far below dry keratin, so damp hair in an iron is the worst thing on this page. The tools built for damp hair are a different category.
2. 2Take a section about an inch wide, clamp near the root but not at it, and turn the iron a half-turn so the hair wraps the outside of the housing.
3. 3Draw it down slowly, keeping the rotation. The speed of the draw sets the tightness: slower is tighter. Stopping mid-draw is what leaves a crease.
4. 4Let the curl cool before you touch it. The set happens during cooling, so catching each curl in your palm or pinning it up does more for hold than another 25F would.
5. 5Alternate the direction of the turn section to section if you want waves rather than ringlets. Same tool, different result.
6. 6If it keeps coming out as a bend rather than a curl, the plates are probably too long or too wide for the rotation, or the draw is too fast. Raising the temperature does not fix either.

When you should just buy a curling iron

An honest page about this has to include the case against it. A flat iron that curls is a one-tool compromise, and it is the right purchase when straightening is the main job and curls are occasional. If the reverse is true, buy the tool built for it.

• You want a repeatable curl size — a curling iron publishes a barrel diameter, which is the number that predicts the result. No flat iron publishes an edge radius. The curling irons hub ranks them.
• You want tight curls or ringlets — a flat iron's edge radius is fixed and relatively large. A half-inch or three-quarter-inch barrel is a different shape entirely.
• You are learning — a clipped curling iron holds the section for you, which is most of the skill. Curling irons for beginners covers the two mistakes behind almost every bad first attempt.
• You have short hair — the rotation needs length to work with. Curling irons for short hair is the shortlist, and small barrels are the answer there.
• You want both without compromise — that is a multi-styler rather than an iron, and it costs accordingly. Dyson Airwrap vs Shark FlexStyle is the comparison most people are actually asking for.

Which one, by what you are doing

• Mostly straight styles, with curls when you want them — the ghd Platinum+. It is the only iron here that publishes both the geometry and the claim, and its single 365F means there is nothing to set wrong. The honest cost is that there is nothing to set at all. The full review covers that trade.
• Long or thick hair that needs the width — the Paul Mitchell Smooth+. Curved-edge plates with a published curl claim at 1.25 inches, dual voltage, and a 9-foot swivel cord. The wider plate costs you a little rotation and saves you passes.
• You want this on a budget — the CHI Original. Sold for straightening, curling and flipping, 1-inch floating plates, the longest cord on this site at 11 feet, and dual voltage. It is locked at 392F, which rules it out for fine or bleached hair — the full review is blunt about that.
• You find the cord fights you — the Dyson Corrale. Up to 30 minutes cord-free, three published temperatures including a genuine 330F, and flexing plates that gather the section. It is by far the most expensive tool here.
• You keep knocking the temperature up mid-style — the Remington Pearl Pro, for the lock. It publishes no curl claim and no edge geometry, so it is the value option rather than a recommendation on this page's own criteria, and 450F is a ceiling to stay well away from.

Related

The straighteners hub has the full ranking for straightening, the curling irons hub covers the tools built for curls, ceramic vs titanium settles the plate-material question, and flat irons under $50 is the same market read from the bottom.