Outdoor Power Tools
Leaf Blower CFM Calculator: How Much CFM and MPH Do You Need
Quick answer
A quarter-acre lot with a few trees needs about 400 CFM, a half acre with some trees about 500 CFM, and an acre with trees 650 CFM or more. Two acres of wooded lot calls for 800 CFM or more, usually a backpack blower. Wet, matted leaves also need high air speed, around 150 MPH or more, not just volume.
Leaf blowers are rated on two numbers. CFM, cubic feet per minute, is the volume of air: it decides how big a pile you can push. MPH is air speed: it decides whether you can lift wet, matted leaves off the grass. Enter your yard size, how many trees drop leaves on it and whether you mostly move wet or dry leaves, and the calculator recommends a minimum CFM and MPH, a blower type and matching models. The two ratings are explained side by side in leaf blower CFM vs MPH.
Leaf blower CFM calculator
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Leaf blowers that fit your yard
Top matches update when you calculate.
EGO Power+ LB7654 765 CFM Blower Kit with 5.0Ah Battery
$299.00Turbo mode reaches 765 CFM and 200 MPH, and EGO rates up to 90 minutes of runtime on the included 5.0Ah battery.
Best for: wet leaves on half-acre and larger lots without gas
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EGO Power+ LB6500 650 CFM Blower (tool only)
$240.99650 CFM turbo with a 225 to 470 CFM variable dial and a 64 dB rating, a cheaper buy for anyone who already has an EGO 5.0Ah pack.
Best for: EGO owners who want a strong blower without buying another battery
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Greenworks 80V 770 CFM Blower Kit with 4.0Ah Battery
$248.49Greenworks rates it at 770 CFM and 180 MPH with about 80 minutes per charge at half load, plus cruise control and a 74 dB brushless motor.
Best for: large yards on the Greenworks 80V platform
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RYOBI 40V HP Brushless Whisper Series 650 CFM Blower (tool only)
$175.00Brushless Whisper Series blower rated at 650 CFM and 160 MPH, sold bare for owners of RYOBI 40V batteries.
Best for: RYOBI 40V households with noise-sensitive neighbors
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DEWALT 60V MAX DCBL772X1 600 CFM Axial Blower Kit
$269.99Brushless axial blower rated at 600 CFM, sold as the X1 kit with a FLEXVOLT battery for yard and jobsite cleanup.
Best for: DEWALT FLEXVOLT users clearing leaves and jobsite debris
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Milwaukee M18 FUEL 450 CFM Handheld Blower (tool only)
$185.98Brushless 18V blower rated at 450 CFM and 120 MPH, sized for driveways, patios and jobsite cleanup on existing M18 packs.
Best for: M18 tool owners clearing hardscapes and garages
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ECHO PB-580T 58.2cc Backpack Blower
$429.9958.2cc backpack blower rated at 510 CFM with a tube-mounted throttle, sized for homeowners and landscapers moving big leaf piles.
Best for: wooded half-acre to one-acre lots
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ECHO PB-9010T X Series 79.9cc Backpack Blower
$698.99X Series commercial backpack blower with a 79.9cc engine rated at 1,110 CFM and 220 MPH, the most airflow in this lineup.
Best for: acreage, heavy wet leaves and commercial crews
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Husqvarna 350BT 50.2cc Backpack Blower
$429.9950.2cc X-Torq engine rated at 692 CFM and 180 MPH, with an ergonomic harness, cruise control and an offset handle that resists arm pull.
Best for: large yards where a handheld runs out of air
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Husqvarna 150BT 51cc Backpack Blower
$297.99Husqvarna lists 765 CFM and 22 N of blowing force from a 51cc X-Torq engine, with a padded harness, hip belt and cruise control.
Best for: value-minded buyers wanting backpack gas power
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EGO Power+ LB6003 600 CFM Backpack Blower Kit with 7.5Ah Battery
$550.80Battery backpack blower with up to 600 CFM, a 64 dB rating and EGO-rated runtime up to 180 minutes on the included 7.5Ah pack.
Best for: long cleanup sessions where gas noise is not welcome
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WORX WG520 Turbine 600 12 Amp Corded Blower
$75.2712 amp corded turbine blower moving 600 CFM at 110 MPH in a 6.5 lb body, with no battery or fuel to maintain.
Best for: small yards, decks and patios within cord reach
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Agri-Fab 44 in Tow-Behind Lawn Sweeper, 28 cu ft
$429.99A 28 cu ft flow-through hopper with a 5.6 to 1 brush-to-wheel ratio that picks up leaves, clippings and pinecones and dumps from the tractor seat.
Best for: fall leaf cleanup on big, treed lots
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Rocky Mountain Goods Drawstring Leaf Tarp, 9 x 9 ft
$25.95A UV-treated poly tarp that cinches into a bag so raked or blown leaves can be dragged off in one load, backed by a lifetime replacement warranty.
Best for: raking leaves without bags
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How much CFM do I need for my yard?
| Yard | CFM | MPH | Type | Catalog blowers that meet it |
|---|---|---|---|---|
| Deck, patio and driveway only | 250+ | 100+ | Handheld battery or corded | Milwaukee M18 FUEL 450 CFM Handheld Blower (tool only), ECHO PB-580T 58.2cc Backpack Blower |
| Quarter-acre lot, few trees | 400+ | 120+ | Handheld battery | Milwaukee M18 FUEL 450 CFM Handheld Blower (tool only), ECHO PB-580T 58.2cc Backpack Blower |
| Half-acre lot, some trees | 500+ | 140+ | Handheld battery or gas | ECHO PB-580T 58.2cc Backpack Blower, DEWALT 60V MAX DCBL772X1 600 CFM Axial Blower Kit |
| 1 acre with trees | 650+ | 160+ | High-output handheld or backpack | EGO Power+ LB6500 650 CFM Blower (tool only), RYOBI 40V HP Brushless Whisper Series 650 CFM Blower (tool only) |
| 2 acres, wooded lot | 800+ | 180+ | Backpack gas or battery | ECHO PB-9010T X Series 79.9cc Backpack Blower |
| 3 acres plus, heavy leaf fall | 1000+ | 200+ | Large backpack gas | ECHO PB-9010T X Series 79.9cc Backpack Blower |
How do the leaf blowers compare on CFM and MPH?
| Model | Price | Airflow | Air speed | Backpack | Voltage | Engine |
|---|---|---|---|---|---|---|
| EGO Power+ LB7654 765 CFM Blower Kit with 5.0Ah Battery | $299.00 | 765 CFM | 200 mph | No | 56V | - |
| EGO Power+ LB6500 650 CFM Blower (tool only) | $240.99 | 650 CFM | 180 mph | No | 56V | - |
| Greenworks 80V 770 CFM Blower Kit with 4.0Ah Battery | $248.49 | 770 CFM | 180 mph | No | 80V | - |
| RYOBI 40V HP Brushless Whisper Series 650 CFM Blower (tool only) | $175.00 | 650 CFM | 160 mph | No | 40V | - |
| DEWALT 60V MAX DCBL772X1 600 CFM Axial Blower Kit | $269.99 | 600 CFM | - | No | 60V | - |
| Milwaukee M18 FUEL 450 CFM Handheld Blower (tool only) | $185.98 | 450 CFM | 120 mph | No | 18V | - |
| ECHO PB-580T 58.2cc Backpack Blower | $429.99 | 510 CFM | - | Yes | - | 58.2 cc |
| ECHO PB-9010T X Series 79.9cc Backpack Blower | $698.99 | 1,110 CFM | 220 mph | Yes | - | 79.9 cc |
| Husqvarna 350BT 50.2cc Backpack Blower | $429.99 | 692 CFM | 180 mph | Yes | - | 50.2 cc |
| Husqvarna 150BT 51cc Backpack Blower | $297.99 | 765 CFM | 270 mph | Yes | - | 51 cc |
| EGO Power+ LB6003 600 CFM Backpack Blower Kit with 7.5Ah Battery | $550.80 | 600 CFM | 145 mph | Yes | 56V | - |
| WORX WG520 Turbine 600 12 Amp Corded Blower | $75.27 | 600 CFM | 110 mph | No | - | - |
Is CFM or MPH more important?
For most yards, CFM matters more, because clearing leaves is mostly about moving volume. A blower with very high MPH but low CFM makes a narrow, fast jet that scatters leaves rather than rolling a pile. MPH matters when leaves are wet, packed into beds or stuck in turf, and for pushing debris off gravel or out of corners. The best blowers pair both: the EGO Power+ LB7654 765 CFM Blower Kit with 5.0Ah Battery lists 765 CFM at 200 MPH in a handheld, and the Husqvarna 150BT 51cc Backpack Blower backpack lists 765 CFM at 270 MPH. Watch for ratings measured with special nozzles, which can inflate one number at the expense of the other.
How does the leaf blower calculator work?
It starts from a base CFM by yard size (about 250 for patios and driveways, 400 for a quarter acre, 500 for a half acre, 650 for an acre, 800 for two acres and 1,000 for three or more), adds about 100 CFM for yards with many trees and 100 CFM plus a higher MPH floor for mostly wet leaves, and recommends a backpack format past about 1 acre or 700 CFM, where holding a handheld at full power gets tiring. For battery blowers it flags runtime: at full or turbo power many battery blowers drain a mid-size battery well within half an hour, so large yards need a larger pack, spare batteries or a gas backpack. Check the runtime-by-speed table in the listing for your model.
Should I get a backpack or handheld leaf blower?
Handheld blowers suit lots up to about half an acre and quick cleanups of walks and decks: they are lighter to carry, easier to store and battery models such as the EGO Power+ LB6500 650 CFM Blower (tool only) start instantly. Backpack blowers put the weight on your shoulders and the power in a longer tube, which makes one to several acres of leaves far less tiring. The ECHO PB-9010T X Series 79.9cc Backpack Blower lists 1,110 CFM for large properties, the Husqvarna 350BT 50.2cc Backpack Blower is a common mid-size gas backpack, and the EGO Power+ LB6003 600 CFM Backpack Blower Kit with 7.5Ah Battery brings a battery backpack option at 600 CFM. Compare formats in backpack vs handheld leaf blowers.
Frequently asked questions
How many CFM is a good leaf blower?
For a typical suburban lot of a quarter to half an acre, 400 to 600 CFM is a good leaf blower. Yards of an acre or more with mature trees benefit from 650 to 800 CFM or more, usually in a backpack format. Under 300 CFM is fine for decks, patios and driveways but slow for lawns covered in leaves.
What MPH is good for wet leaves?
For wet or matted leaves, look for about 150 MPH or more along with at least 500 CFM. Air speed lifts leaves that are stuck to grass or packed into beds, while volume moves them once they are loose. Very high MPH with low CFM tends to scatter leaves rather than move a pile, so check both numbers rather than either alone.
Is a battery leaf blower as strong as gas?
Top battery handheld blowers now list 650 to 770 CFM, comparable to many gas handhelds and some gas backpacks. The difference is runtime: at full power a battery can drain quickly, while a gas blower runs as long as there is fuel. For quarter to half acre lots, a strong battery blower with a larger battery is usually plenty; for several wooded acres, a gas backpack is still the practical choice.
Do I need a backpack leaf blower for one acre?
Not necessarily. A high-output handheld of 650 CFM or more can clear an acre, especially with few trees or regular cleanups. With many mature trees and heavy leaf fall, a backpack blower is much less tiring because the weight sits on your back and the power is higher. Many owners of an acre with trees find a backpack worth it after one full leaf season.
Should I buy a leaf blower or a leaf vacuum?
A blower moves leaves quickly into piles or off the lawn; a leaf vacuum mulches them into a bag, shrinking volume for disposal or compost. For small yards with few trees, a blower and vacuum combination or a mulching vacuum can handle both jobs. For larger yards, blowing leaves into piles and picking them up with a lawn sweeper or tarp is usually faster.
Researched, not professional advice. This page is compiled from published specifications, manuals, labels and owner-review consensus, not hands-on testing. Follow the manufacturer's instructions and product label, and consult a qualified professional where safety, chemicals, fuel or structures are involved. As an Amazon Associate we earn from qualifying purchases.