The Tool Desk
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What do MPH and CFM measure?
MPH and CFM describe different properties of airflow, not two versions of the same performance score.
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- MPH, or miles per hour, is the speed of the air coming out of the blower. Troy-Bilt describes this as more helpful when moving heavier debris.
- CFM, or cubic feet per minute, is the volume of air the blower moves in one minute. It indicates how much air is flowing, rather than how fast it is traveling.
Toro’s blower FAQ gives the same basic distinction: CFM measures volume; MPH measures how fast the air travels. These are manufacturer explanations, not an independent performance standard. There is no general formula in the cited guidance for converting one measure into the other, or for combining them into a universal score.
A useful shorthand is: MPH tells you how fast the air is moving; CFM tells you how much air is moving. To make the figures useful, you also need the measurement location and nozzle configuration.
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That distinction is important because an air-speed number and an air-volume number answer different questions. A large MPH figure does not tell you the volume of air moving, and a large CFM figure does not tell you how quickly that air is traveling. Read them as a pair, not as interchangeable ways of stating power. Neither tells you by itself whether the blower is comfortable to carry, how long a battery model is estimated to run, or how the tool will perform in every cleanup situation.
Which matters more: MPH or CFM?
Neither is automatically more important. Air speed can be a useful clue when you need to dislodge heavier debris, as Troy-Bilt’s guidance notes. Air volume describes the quantity of moving air. A high figure in either category does not, by itself, establish how quickly or completely a blower will clear a particular yard.
Use the numbers to narrow a comparison, then ask whether the listed setup and the rest of the tool fit your task. A model’s nozzle, attachments, form factor, power source and operating needs all affect whether its specifications are relevant to your cleanup. A backpack blower and a handheld blower, for example, differ in handling format even before you consider their air figures.
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For a fair shortlist, think of the figures as screening information. First identify what kind of debris and area you need to handle, then compare the air-speed and air-volume listings for models that otherwise fit your needs. If one candidate has an attractive number but its configuration is unclear, that uncertainty is part of the comparison—not a reason to silently assume its setup matches another model’s.
Check how and where the air figures were measured
Do not assume that two manufacturers measured performance at the same point. A specification may describe airflow at the nozzle, in the pipe or in the blower housing. The nozzle itself can also differ in shape or configuration, so two headline numbers are not necessarily a like-for-like comparison.
South Coast AQMD’s 2014 procurement announcement treated air volume with tubes and without tubes as separate fields. That distinction illustrates why the tube or nozzle setup belongs beside the number when comparing specifications. The announcement is a procurement document, not a consumer rating system.
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When looking at a product listing, record the stated air speed and volume alongside the manufacturer’s wording about measurement location and nozzle. If a listing does not disclose the setup, mark it as unspecified rather than assuming it matches another model’s test conditions.
Keep the qualifiers attached to each number when copying specifications into notes or a comparison table. “Maximum” is a qualification, and “at a round nozzle” is configuration information; dropping either can make a concise table look more certain than the listing supports. Likewise, if a page lists airflow in more than one location, preserve which value is which instead of selecting whichever number looks largest.
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A missing qualifier does not prove a manufacturer used a particular setup. It means the product information you have does not establish that detail. In that case, either check the current manufacturer listing for more information or leave the measurement context marked “not stated.” That is more accurate than treating unspecified figures as directly comparable.
Manufacturer-listed examples: read the context, not just the ranking
The figures in this table come from manufacturer product pages accessed in 2026, except where an older dated source is noted. They are manufacturer specifications, not independent test results. The pages do not establish one common measurement procedure across brands, so the values should not be treated as a controlled head-to-head ranking.
| Model | Manufacturer-listed air volume | Manufacturer-listed air speed | Published configuration or other context |
|---|---|---|---|
| Troy-Bilt TB27BH | 450 CFM | 205 MPH | Troy-Bilt model page; the cited information does not specify a nozzle measurement location. |
| Husqvarna 590BTS | 1,245 CFM maximum | 216 MPH maximum | Both figures are listed at a round nozzle. Husqvarna also lists 56 N blowing force. |
| Shindaiwa EB610RT | 700 CFM | 200 MPH | Shindaiwa lists both figures at the nozzle. |
| Shindaiwa EB262 | 456 CFM | 172 MPH | Shindaiwa lists both figures at the nozzle; its product page also provides weight and a sound rating. |
The Husqvarna page labels its figures as maximum values and specifies a round nozzle. Shindaiwa specifies the nozzle for both models. The cited Troy-Bilt information gives paired figures but does not provide a comparable nozzle location in the supplied product details. Those differences matter: the table is useful for seeing what manufacturers publish, but not for declaring a winner based on the largest number.
Within the two Shindaiwa listings, both pairs are described at the nozzle: the EB610RT is listed at 700 CFM and 200 MPH, and the EB262 at 456 CFM and 172 MPH. That lets a reader see the published values and their stated location side by side. It still does not turn the pages into independent testing or establish that all measurement conditions are identical. Keep the model names and nozzle qualifier with the figures whenever you repeat them.
The Husqvarna 590BTS listing also includes 56 N of blowing force. Force is an additional manufacturer-published specification, not a replacement for air speed or volume and not a conversion between them. Its presence can help describe what the manufacturer publishes for that model, but it does not create a universal ranking scale for comparing every blower.
Toro’s 60V comparison page is another example of a manufacturer presenting paired CFM and MPH figures in a model table, with battery information and estimated runtime alongside them. Those details are more useful for selection than treating either air number as a stand-alone verdict; verify the current product listing for the exact model and configuration.
Manufacturer tables can also make it easier to compare operating details within a product family. Toro’s page distinguishes battery information and estimated runtime alongside air figures. Treat runtime as its own listed estimate, not something that can be calculated from MPH or CFM. The same principle applies to weight, noise and format: they answer other buying questions and should remain separate from the two airflow measures.
A practical process for comparing leaf blower specifications
- Define the cleanup you need to do. Note the size of the area, the kind of debris and whether you need to shift heavier material. Troy-Bilt’s general selection guidance also points readers to yard size, debris and ease of use. This frames the comparison; it does not create a guaranteed result from any one spec.
- Write down both air figures. Record MPH and CFM together for each candidate. Do not rank a blower by speed alone or volume alone, and do not calculate an invented combined score.
- Capture the measurement context. Copy whether the manufacturer says “at the nozzle,” “at a round nozzle,” “in the pipe,” “in the housing,” or with or without a tube. If the listing does not say, record “not stated” and treat comparisons with more fully specified models cautiously.
- Check the nozzle and attachments. Confirm which nozzle the listed specification uses and whether the included attachment matches how you expect to operate the blower. A figure associated with a particular nozzle should not be assumed to apply to a different setup.
- Look for additional performance information. If the manufacturer publishes blowing force, note it separately rather than treating it as a conversion of MPH or CFM. Husqvarna lists 56 N for the 590BTS, but that is a model-specific published value, not a universal rating threshold.
- Compare the operating fit. Check weight and whether the tool is handheld or backpack-style. For battery models, look at battery information and estimated runtime; for fuel-powered models, consider fuel and operating needs. Do not infer runtime from airflow figures.
- Review noise information and safety guidance. Preserve the manufacturer’s stated context for a sound rating; numbers measured or described differently may not be directly comparable. Read the manual for the exact blower before operating it.
- Make a shortlist rather than declaring a spec-sheet winner. Prefer models whose published setup is clear and whose handling and power requirements suit your use. If measurement conditions are missing or differ, say so in your comparison instead of treating the air figures as directly equivalent.
A simple comparison note can keep the decision disciplined. For each model, write down its name, listed CFM, listed MPH, exact nozzle or measurement wording, blowing-force figure if provided, weight, format, power source, battery or fuel considerations, runtime estimate if listed, and noise information with its context. Use “not stated” where the manufacturer page leaves a field blank. This makes gaps visible and prevents a missing detail from being mistaken for a matching specification.
When two options seem close, revisit the practical criteria rather than forcing a winner from the numbers. A homeowner comparing a battery model with a fuel-powered one, for instance, should treat battery details and estimated runtime as distinct from fuel and operating needs. The product pages cited here do not support a universal conclusion about which power type is right; that depends on the reader’s task and preferences.
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How to interpret common comparison traps
“The highest MPH must be the best blower”
MPH tells you air speed, and manufacturer guidance identifies it as useful when moving heavier debris. It does not tell you the total air volume, nozzle context, handling comfort or operating needs. It is one clue, not a complete cleanup result.
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CFM describes air volume per minute, but the number alone does not establish how the blower performs on a specific surface or debris type. Check the accompanying speed figure, measurement location and nozzle before drawing even a paper comparison.
“Bigger numbers from different brands are directly comparable”
They may not be. If one figure is at a round nozzle and another page does not state a location, the listings do not document a common setup. Manufacturer pages can also use maximum-value labels or other qualifications. Keep those labels attached to the numbers and avoid presenting an uncontrolled comparison as a test.
“MPH and CFM can be reduced to one magic number”
The cited manufacturer guidance explains the measures separately and does not establish a universal formula, ratio or combined score. A custom calculation would imply precision the specifications do not support. Compare both figures and the conditions attached to them.
“A published figure tells me exactly how long cleanup will take”
The listed air-speed and air-volume specifications do not provide an exact cleanup time. The cited manufacturer pages do not establish a time prediction for a particular yard or debris load. For battery models, use the manufacturer’s estimated runtime as a separate operating detail and check its context on the current product page; do not derive a runtime estimate from MPH or CFM.
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“No stated nozzle means the nozzle does not matter”
An omitted measurement detail is simply missing information. South Coast AQMD’s procurement form separated air volume with and without tubes, while product pages in the examples specify nozzle context in different ways. Record what is stated and what is not, rather than filling the gap with an assumption.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Other factors that can change the right choice
- Yard size and debris: These are among the factors Troy-Bilt recommends considering alongside the air figures. The relevant task is not captured by MPH or CFM alone.
- Weight and format: Check the published weight and whether the blower is handheld or backpack-style. A specification that looks attractive on paper may not fit the way you need to handle the tool.
- Power source and operating needs: Battery and fuel models involve different practical considerations. For battery blowers, consult the model’s battery details and estimated runtime; for fuel models, check the manufacturer’s operating requirements. Do not assume that two blowers with similar airflow figures have similar run time or effort.
- Noise: Use any sound rating only with its stated measurement context. The EB262 product page includes a sound rating, but that one model’s listing does not establish a cross-brand noise comparison.
- Published blowing force: Treat a force figure as an additional specification where available, not a replacement for CFM or MPH. It should remain tied to its model and manufacturer source.
These are not minor footnotes to an airflow comparison. If two models have figures measured in different or unspecified configurations, the practical distinction between handheld and backpack formats, power source, weight, noise information and operating requirements may be more useful for deciding which listing deserves a closer look. The sources do not support collapsing all of those attributes into a new numerical score, so compare them as separate questions.
Product specifications and availability can change. Check the current manufacturer page and manual for the exact model and attachments being considered.
Use the blower safely
Follow the owner’s manual for the specific blower and wear the protective equipment it calls for. STIHL’s handheld blower safety manual advises eye protection and cautions that hearing protection can reduce your ability to hear warnings. Maintain awareness of people nearby and do not assume that protective equipment removes the need to listen for surroundings.
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Safety guidance belongs alongside a buying comparison because the manual is specific to the product, while a spec table is not operating instruction. Read the exact model’s manual for its requirements and warnings, and take the hearing-awareness caution seriously when deciding how to use hearing protection. The information here is not a substitute for the manufacturer’s manual.
Frequently Asked Questions
What is more important, MPH or CFM on a leaf blower?
Neither is automatically more important. MPH measures air speed and, according to Troy-Bilt, can be more helpful for moving heavier debris. CFM measures air volume per minute. Compare both figures, then check the nozzle, measurement location and other factors such as handling and power needs.
How do you compare leaf blower CFM and MPH?
Write down both figures for each model and preserve any qualifiers, such as maximum output or performance at a particular nozzle. Check whether the listing specifies a nozzle, pipe, housing, or tube configuration. If it does not, mark the context as not stated instead of assuming it matches another model.
Is there a good MPH or CFM number to look for?
The manufacturer information cited here does not establish a universal good or minimum MPH or CFM threshold. Treat model figures as specifications for the named product and configuration, not as recommendations that apply to every yard.
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Can I convert MPH to CFM or combine them into one score?
No conversion formula or universal combined score is established by the cited manufacturer guidance. MPH and CFM describe different aspects of airflow, so compare them side by side and keep the measurement context attached.
Why does the nozzle matter when comparing air figures?
Product pages may report measurements at a nozzle, in a pipe or in the housing, and nozzle configurations can differ. South Coast AQMD’s 2014 procurement announcement also treated air volume with and without tubes as separate fields. The setup should be part of the comparison.
Do higher air figures mean a blower will finish my yard faster?
The cited specifications do not predict exact cleanup time or guarantee a result for a particular yard. Consider the debris, area, measurement setup, handling and operating needs, and consult manufacturer runtime information separately for battery models.
What safety advice applies when using a leaf blower?
Follow the manual for the exact blower. STIHL’s handheld blower safety manual advises eye protection and notes that hearing protection can reduce your ability to hear warnings. Stay aware of people nearby and follow the product’s complete safety instructions.
The Bottom Line
Use MPH and CFM together, but do not treat either as a universal measure of cleanup performance. Check the nozzle and measurement details, keep manufacturer qualifiers attached to the figures, and compare handling, power, runtime or fuel needs, and noise separately. When test conditions are unclear or differ, say so rather than declaring a spec-sheet winner.
Quick Recap
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