Leaf blower moving a broad stream of autumn leaves across a yard

What CFM and MPH Mean on a Leaf Blower

ByKen

As an Amazon Associate we earn from qualifying purchases.

If you are asking what cfm and mph mean on a leaf blower, the short answer is that they measure two different things. CFM (cubic feet per minute) is the volume of air the blower moves each minute. MPH (miles per hour) is how fast that air travels. The manufacturer pages we opened define both this way, and Toro’s buying guide says a blower needs both air speed and air volume to work.

The number you read depends on where it was taken and under which setting. This guide shows how the pages label each figure, what they say the figures measure, and what they leave out. It does not rank any model, and it gives no operating steps.

Quick answer

  • CFM is air volume. Toro’s electric leaf blower page says CFM ‘measures the volume of air a blower moves.’
  • MPH is air speed. The same page says MPH ‘measures how fast that air travels.’
  • Labels change with the point of measurement and the setting. Husqvarna splits airflow between the housing, the pipe and the nozzle, and Toro and EGO quote turbo figures.
  • None of the pages we opened gives a formula that combines CFM and MPH into one score.

What CFM means

CFM stands for cubic feet per minute, and it is a volume figure. Toro’s YardCare buying guide says the measurement ‘represents the air volume,’ and its electric leaf blower FAQ says CFM ‘measures the volume of air a blower moves.’ OSHA’s technical manual glossary uses the same unit for volume flow rate, which it defines as the ‘quantity of air flow in cfm, scfm, or acfm.’ That glossary covers workplace ventilation, not handheld blowers, so it supports the unit definition only.

What MPH means

MPH stands for miles per hour, and on a leaf blower the figure is an air speed. Toro’s FAQ says MPH ‘measures how fast that air travels.’ Husqvarna’s US category FAQ describes air speed as ‘how fast air leaves the nozzle,’ but labels that value in m/s, while its spec tables use mph. The STIHL US page for the BR 200 lists its maximum air velocity with the round nozzle as 220.5 ft/s and as 150.3 mph under one label. OSHA defines velocity as ‘the time rate of movement of air; usually expressed as feet per minute.’

Why the two figures come as a pair

Toro’s buying guide states the core point: ‘For a leaf blower to work, it needs both air speed and air volume.’ It gives two examples. A nozzle ‘the size of a straw could blow air at 300 mph’ is good for cracks in a driveway but not for leaves in a yard. A nozzle ‘the size of a basketball could put out 600 CFM of air’ is good for sweeping but weak on other debris. Toro also notes that ‘it is possible for a 230 MPH blower to have more power than a 240 MPH blower,’ so a higher speed label alone does not settle a comparison.

Toro’s electric leaf blower FAQ frames the split in job terms: ‘CFM helps move large amounts of leaves, while MPH helps lift and loosen stubborn debris.’ Asked which matters more, the same FAQ answers: ‘Both play an important role. What matters most depends on your task.’

What the labels say, side by side

The table copies each page’s labels. Rows are grouped by manufacturer, not ranked by performance, and no row is a recommendation. Where a page gives no point or setting, the cell says not stated.

Manufacturer page Airflow label Speed label Point or setting stated Source
Husqvarna 560BTS 890 cfm in housing; 631 cfm in pipe; 631 cfm at round nozzle 232.42 mph at round nozzle Housing, pipe and round nozzle labelled separately Husqvarna US 560BTS page
Husqvarna 150BT 765 cfm in housing; 452.03 cfm in pipe 270 mph at round nozzle; 174.93 mph Round nozzle named for the first speed; the second speed has no point stated Husqvarna US 150BT support page
EGO POWER+ 650 CFM 650 CFM at turbo button; dial from 225 to 470 CFM up to 180 MPH with tapered nozzle attached Turbo button and tapered nozzle; a second dial range on the same page runs to 500 CFM EGO POWER+ 650 CFM Blower page
EGO POWER+ 880 CFM up to 880 CFM up to 200 MPH ‘Up to’ wording; point not stated EGO POWER+ 880 CFM Blower page
DeWalt 20V MAX XR brushless (DCBL724B) maximum 550 CFM 133 MPH, in the same maximum label CFM measured under ANSI B175.2 on full trigger (footnote); basis for MPH not stated DeWalt product page
Toro electric leaf blower range up to 605 CFM max up to 157 MPH max Turbo boost; footnote gives a laboratory basis Toro electric leaf blowers page
STIHL BR 200 (US) not stated in fetched text 150.3 mph max with round nozzle (220.5 ft/s) Round nozzle; blowing force 12 N with round nozzle STIHL US BR 200 page
Ryobi 18V ONE+ 350 CFM 350 CFM 100 MPH Not stated; use given as hard surfaces and dry leaves Ryobi 18V ONE+ 350 CFM Blower page
Ryobi 40V 450 CFM 450 CFM 120 MPH Not stated; use given as damp or dry leaves and compacted grass Ryobi 40V 450 CFM Blower page

Two patterns show up. One page can give three airflow figures for the same model, and they are not equal. A speed figure may carry a point or setting, or none at all. The Husqvarna 150BT page labels its 452.03 cfm figure as air flow in the pipe, not at the nozzle, so the label is the only guide to what that number covers.

Housing, pipe and nozzle readings

The Husqvarna 560BTS page shows a split reading most clearly. Its spec table lists ‘Air flow in housing’ at 890 cfm, ‘Air flow in pipe’ at 631 cfm and ‘Max air flow at nozzle (round)’ at 631 cfm. Its FAQ describes 631 CFM as ‘a maximum air flow’ at the nozzle and pairs it with a maximum air speed of 232 MPH. The page lists the readings but does not explain why the housing figure is higher.

The Husqvarna 150BT support page has a similar split, with 765 cfm in the housing and 452.03 cfm in the pipe. Its speed figures are 270 mph under ‘Air speed (round nozzle)’ and 174.93 mph under a plain ‘Air speed’ label. A housing figure is not a nozzle figure, so it should not be set beside one.

Turbo boost and nozzle attachments

Toro’s electric leaf blower page puts its peak figures on turbo: ‘Up to 605 CFM Max and 157 MPH Max on turbo boost.’ A footnote on that page says the performance claims rest on controlled laboratory work, and it does not describe the everyday setting. EGO ties its top speed to a nozzle. Its 650 CFM page says the turbo button delivers 650 CFM, ‘up to 180 MPH with tapered nozzle attached.’ The tapered nozzle gives ‘a concentrated stream of air to increase miles per hour,’ and the flat nozzle gives ‘a flattened stream of air for increased coverage.’ The page does not say how the airflow figure changes with the nozzle.

Measurement basis

DeWalt’s 20V MAX XR brushless blower page gives ‘maximum 550 CFM at 133 MPH.’ Its footnote says the CFM figure was measured under ANSI B175.2, with the trigger fully pressed, and it does not say how the 133 MPH figure was read. STIHL’s US page labels its speed ‘Max. air velocity with round nozzle,’ which names the nozzle but gives no basis for the figure. For DeWalt’s handheld models, see the DeWalt 20V MAX brushless handheld blower guide.

Speed units and the newton figure

The STIHL page also lists blowing force with the round nozzle at 12 N, with a footnote that reads ‘Force in Newtons (N) to compare the performance of blowers.’ Husqvarna’s category FAQ calls blowing force ‘the overall pushing power’ and says that ‘For performance comparisons, blowing force is generally the more reliable indicator.’ Toro and Ryobi lead with CFM and MPH, while Husqvarna and STIHL point to newtons for comparison. None of the pages we opened converts newtons into CFM or MPH, and none gives a way to combine them.

How CFM and MPH work together on a job

Toro’s FAQ gives the most direct job split in this set: ‘CFM is key for moving large volumes of leaves across your yard, while MPH helps break loose compacted or wet debris.’

Ryobi’s two product pages match figures to jobs in a similar way. The 350 CFM and 100 MPH page is labelled ‘Ideal for Hard Surfaces & Dry Leaves,’ and the 450 CFM and 120 MPH page is labelled ‘Ideal for Damp/Dry Leaves & Compacted Grass.’ Neither page says how either figure was measured, or why the damp-leaf and compacted-grass label goes with the higher speed figure. For a different brand’s cordless option, see the Black and Decker 18V leaf blower guide.

Safety

A spec sheet does not tell you how to run a blower safely. The STIHL US page for the BR 200 carries this general warning: ‘Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products.’

This post gives no operating, blade or battery steps, so the removal steps for those parts do not apply here. The pages we opened do not say whether a higher airflow or a higher speed changes the risk of blowing debris toward people or objects. Read CFM and MPH labels as product specifications, not as a safety rating.

How we chose

We opened twelve pages on 2026-10-22. Eleven are manufacturer pages: two from Toro, three from Husqvarna US, two from EGO, one from DeWalt, two from Ryobi and one from STIHL US. The twelfth is the OSHA Technical Manual glossary, which defines the units.

The criteria were a manufacturer or government page, a page that defines CFM or MPH or gives a labelled figure with its point or setting, and a page that opened without error. Product and support pages supplied labels, definitions and stated uses, not procedures. Retail, blog and review pages were not used for definitions, so the Greenworks and Worx blog posts that appeared in search were set aside. The Greenworks product page that was requested returned a 403 response, so it is not counted. A search of university extension and government domains turned up ventilation material, and the OSHA glossary was the only page from that set that we opened. We did not rank models, and each figure appears only with its page’s label.

What we could not verify

  • How most readings were taken. Only DeWalt’s footnote names a standard, ANSI B175.2, and it covers the CFM figure only. Toro’s footnote gives a laboratory basis without naming a standard.
  • Whether DeWalt’s 133 MPH figure was read on the same setup as its 550 CFM figure. The footnote is silent on the speed figure.
  • What the 174.93 mph figure on the Husqvarna 150BT page measures. The page gives no point for it.
  • Which EGO 650 dial range applies. The page gives 225 to 470 CFM in one place and 225-500 CFM in another.
  • Whether the m/s figure on the Husqvarna category page and the mph figures in its spec tables describe the same point. The page does not connect them.
  • Whether any figure predicts clearing results on a given yard. None of the pages states a link between a figure and results.

What the sources do not say

  • How CFM and MPH combine. No page gives a formula, a weighting or a single score. Toro says a blower needs both, and Husqvarna names blowing force as the more reliable comparison figure, but neither explains how to balance them.
  • How to convert between speed units. The STIHL page shows ft/s and mph, the Husqvarna pages show m/s and mph, and none gives a conversion rule.
  • How long a turbo or boost figure can be held. Toro’s FAQ gives no duration. Its runtime answer says that ‘Lower power settings extend runtime, while higher output for tough conditions will use more energy.’
  • Whether a higher CFM or MPH reading means a cleaner result on wet leaves or on a given surface. The pages describe intended uses, not results.

FAQ

What does CFM mean on a leaf blower?

CFM means cubic feet per minute, which is the volume of air the blower moves each minute. Toro’s electric leaf blower FAQ says CFM ‘measures the volume of air a blower moves.’ OSHA’s glossary uses the same unit for volume flow rate in workplace ventilation.

What does MPH mean on a leaf blower?

MPH means miles per hour, and on a leaf blower it is the speed of the air. Toro’s FAQ says MPH ‘measures how fast that air travels.’ Husqvarna’s category FAQ describes air speed as ‘how fast air leaves the nozzle’ but labels its value in m/s, so check the unit on any page you read.

Is a higher CFM or MPH number better?

The pages we opened do not give a single rule. Toro says ‘Both play an important role’ and that ‘What matters most depends on your task.’ Its buying guide also says a 230 MPH blower can have more power than a 240 MPH blower, so a higher speed label does not settle the question by itself.

Why does one blower show two different CFM figures?

Manufacturers often give airflow at more than one point. The Husqvarna 560BTS page lists 890 cfm in the housing and 631 cfm in the pipe and at the round nozzle. The EGO 650 page gives 650 CFM at the turbo button and a lower dial range. Compare figures only when both pages name the same point and setting.

Does a higher airflow mean the battery runs out faster?

Toro’s FAQ says runtime ‘depends on battery size, power mode, and the type of debris being cleared.’ It also says that ‘Lower power settings extend runtime, while higher output for tough conditions will use more energy.’ The pages we opened do not link a runtime figure to the CFM or MPH label. For battery choices with DeWalt blowers, see the DeWalt leaf blower battery guide.

Do the figures show how safe a blower is?

No. The figures describe airflow and speed, not safety. The STIHL US page for the BR 200 says improper use ‘may cause serious or fatal injury’ and tells you to read the instruction manual before use. Use that manual for operating and safety steps.

Bottom line

Compare CFM with CFM and MPH with MPH, and only when both labels name the same point (housing, pipe, nozzle or turbo) and the same setting. If a page does not name them, treat the figure as a label, not a like-for-like number.

Sources

Similar Posts