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We’ve ranked and reviewed the top 20 best calculating flow rate, enabling you to track prices across multiple websites and compare in-store or online options.
Best Calculating Flow Rate Comparison 2023
SaleBestseller No. 1 
Moistenland Water Flow Meter, Standard 3/4" Hose Thread, High Accuracy and IP6X Waterproof, Suitable for Indoor and Outdoor Use
- Prevents Over-watering: The standard 3/4" Hose Thread (Female to male) allows for easy attachment of a garden hose or hose nozzle without the need for an extra converter. This feature helps to measure water usage, saving water and reducing your bill.
- Digital Display: The easy-to-read LCD display provides four water measurements. The water flow meter measures GPM, single water usage, 7-day average water usage, and total usage. Please note that the GPM information is in real-time, so minor fluctuations may occur.
- High Accuracy: The accuracy of the meter is 0.1 gallon. When the value exceeds 9999.9, the accuracy becomes 1 gallon, without a decimal point. The maximum water measurement is 99999.
- IP6X Waterproof: The Moistenland water flow meter is designed for both indoor and outdoor use. You can install the meter in your garden hose with ease and it will withstand the rain, ensuring long-term durability.
- 360 Degree Rotational Connector: This feature is perfect for measuring water usage at home, including garden hoses, hose nozzles, pool refills, irrigation systems, RVs, car washes, and home showers.
Bestseller No. 2 
Savant Flow Totalizer and Flow Rate Meter 3/4" NPT for Water Filter
- Easy installation and operating
- Flow totalizing up to 99, 999 gallon
- Flow rate display from 0.6 – 14.5 gal./min
- Power off memorization of last status
- Low battery power alert
Bestseller No. 3 
The Real Estate Investor's Pocket Calculator: Simple Ways to Compute Cash Flow, Value, Return, and Other Key Financial Measurements
- Amazon Kindle Edition
- Thomsett, Michael (Author)
- English (Publication Language)
- 274 Pages - 10/18/2017 (Publication Date) - AMACOM (Publisher)
Bestseller No. 4 
Oxygen flow calculator - Free
- D tank calculation
- E tank calculation
- G tank calculation
- H tank calculation
- K tank calculation
SaleBestseller No. 5 
Learning Resources Mathlink Cubes, Educational Counting Toy, Early Math Skills, Set of 100 Cubes
- SKILL DEVELOPMENT: Math skills (one-to-one correspondence, counting to 100, skip counting, Comparison, Making 10, Nonstandardized measurements, Grouping, Addition, Subtraction, Graphing), Color identification, Shape identification, Patterning, Matching, Fine motor skills, Eye-hand coordination, Motor planning.
- Cubes feature geometric shape cutouts and link together on all sides for more complex patterning activities.
- Great for counting to 100 by ones and tens, grouping, and one-to-one correspondence.
- LEARNING STYLES: Visual, Tactile
- Ages 5+
Bestseller No. 6 
Booty Kicker – Home Fitness Exercise Barre, Folds Flat, Portable, Storable, Strong Angular Design for Pushing, Pulling, Balance & Ballet Exercises, Perfect for Barre Workouts
- Patented Weight Balancing Angular Design. Unique design provides stability for pushing and pulling. US Patents #10821313, #11389684
- Hinge Design & Quick Release for folding flat. Rolling Wheels engage when tilted up.
- Authentic Wooden Barre. Durable Steel Construction. Beautiful White paint with Nickel Plated accents.
- Weight Racks (weights not included)
- Gripping rubber feet for any floor
SaleBestseller No. 7 
EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
- Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
- Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches
- Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
- EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
- Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
SaleBestseller No. 8 
Nicwell Water Dental Flosser Teeth Pick - 4 Modes Dental Oral Irrigator, Portable and Rechargeable IPX7 Waterproof Powerful Battery Life Water Teeth Cleaner Picks for Home Travel
- 【Deeply Clean Teeth, Whiten Teeth and Improve Gum Health】With upgraded unique pulsation technique, Nicwell water dental flosser can offer high pressure water pulse 1400-1800 times/min, 30-110PSI strong water pressure to remove oral hidden deep, massage the gum effectively and promoting blood circulation. Also helpful for bleeding gums, bad breath, benefitful for orthodontic brace and bridge care.
- 【Nicwell Water Dental Flossers Perfessional Customer Service】12 months after-sale service and friendly customer service such as within 24Hrs respone E-mail support for troubleshooting, telepohone customer service. Nicwell manufactured under strict quality standards to give our customers best experience. It's the best gift for friends, birthday gift and so on.
- 【4 Flossing Model to Suit All Different Conditions of Teeth and Gums】Clean- With 1800 times/minute strong water pulses to remove smaller particles between tooth. Soft - Offers gentle 1400 times/minute pressure to clean sensitive teeth. Massage - With 1400~1800 times/minute to deep clean your teeth and stimulate and massage the gums. Please choose soft mode when you use dental flosser at the first time.
- 【Carry on Size】Cordless and lightweight, this water teeth cleaner picks is ideal for travel, 5 interchangeable jet tips included for your whole family. The 360°rotatable nozzle allows you to easily clean areas that are difficult to reach and prevents tooth decay,dental plaque,dental calculus,gingival bleeding and dental
- 【Powerful Battery Life with USB Cable Charged for Travel & IPX7 Waterproof】With powerful and environmental lithium battery, fully charged need 4 hours and used continuously for about 21 days. Come with USB Cable, (Adapter Not Included), applicable to a variety of charging equipements such as power bank, computer, laptop.... With double-sealing rings, Nicwell oral irrigator prevent water leakage reliably, can use for shower in the bathroom and it's washable to clean.
SaleBestseller No. 9 
H2 Flow Controls FV-C Control FlowVis 2 x 2.5in. Complete Pool Flow Meter and Check Valve
- Combined functionality of flow meter and check valve
- Clear, easy to read scale in GPM or optional LPM with key Velocity points
- Can be installed horizontally, vertically, upside down, and next to any elbow or other fitting
- Flowvis offers an average accuracy of 2.01% between 20-110 GPM and is NSF certified to 50 PSI
- Installs in-line, no saddle Clamps or flat rubber seals to corrode and no calibration is ever required
Bestseller No. 10
Oxygen flow calculator
- D tank calculation
- E tank calculation
- G tank calculation
- H tank calculation
- K tank calculation
Bestseller No. 11 
GREDIA 2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 10-200L/min
- Connect to 2 inch BSPT male thread, hall effect
- Flow range:10-200L/min, Water Pressure: ≤1.75Mpa
- Working voltage: DC 5-24 V, F=(0.2*Q)±2%, Q=L/Min
- Material: food grade plastic, all raw materials conform to the ROHS test standard
- Wide application: It is mainly used in petrochemical industry, residential area flow control, waterworks, farmland and garden irrigation, etc.
SaleBestseller No. 12 
RESTMO Water Meter with Quick Connect Fittings | Digital Control | 4 Measure Modes | Display Gallon/Liter Usage and Flow Rate | Ideal to Track Outdoor Garden Hose Watering
- Easy-To-Read LCD Displays 4 Measure Modes
- Mode 1: Real-Time Water Flow Rate (GPM or LPM)
- Mode 2: Last-Time Water Consumption
- Mode 3: Daily Average Water Usage of a Week (count from next day)
- Mode 4: Total Water Consumption
Bestseller No. 13 
Desk Ref
- Thomas J Glover (Author)
- English (Publication Language)
- 1280 Pages - 05/01/2010 (Publication Date) - Sequoia Pub (Publisher)
Bestseller No. 14 
Flow Converter & Pressurized pipe velocity calculater
- Convert the flow units between 16 available units includes SI and US systems .
- optional Calculate the velocity for any number of pressurized pipes with any diameter.
- More than 15 units available for velocity units includes SI and US systems .
- More than 11 units available for Diameter units includes SI and US systems.
- English (Publication Language)
SaleBestseller No. 15 
EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1, 12 x 8 x 4
- The product is highly durable
- The product is easy to use
- Manufactured in China
SaleBestseller No. 16 
The Real Estate Investor's Pocket Calculator: Simple Ways to Compute Cashflow, Value, Return, and Other Key Financial Measurements
- Used Book in Good Condition
- Michael C. Thomsett (Author)
- English (Publication Language)
- 256 Pages - 11/07/2005 (Publication Date) - AMACOM (Publisher)
Bestseller No. 17 
Dogzymes Delee Style Suction Catheter for Extracting Liquid or Mucous from Animal's Nose and Mouth with Easy to use Tubes and Gentle Mouth Suction
- Small flexible ends
- Catheter size 3.3 mm
- Catch basin is 20 ml
- Sterile packed
Bestseller No. 18 
JIAWANSHUN Oxygen Flow Meter 0.1-1.5LPM Gas Flow Regulator Gas Flowmeter with Copper Connector for Oxygen Air
- Mainly used to detect oxygen flow, control the flow of oxygen, the gas flow can be detected
- Product function: to measure oxygen and other gas single-phase non-pulsating flow
- Flow range: 0.1-1.5 LPM
Bestseller No. 19 
7 Shower Flow Reducer Limiter Set Water Flow Saver Adapter Set Flow Reducer Limiter 1/2 Inch Flow Restrictor Control Valve Flow for Fixed Shower Head and Handheld Shower 1.2/ 1.5/ 1.8/ 2/ 2.2/ 2.5 GPM
- Nice combination: package comes with a1/2 NPT restrictor valve and 6 pieces water flow restrictors with different water flow specifications and in various colors,1.2/ 1.5/ 1.8/ 2/ 2.2/ 2.5 GPM; shower pressure reducer,can choose suitable one to apply
- Good helper for household showers: featuring brass and POM material, shower flow reducer is safe and reliable to use; The working temperature is 0 - 90 Celsius, which is suitable for most household showers
- Easy to install and disassemble: it is easy and simple for you to use shower flow limiter to control the water flow rate, applicable for saving water and controlling the water flow rate, practical in daily life
- Useful and wide application: shower flow saver fits for bathroom handheld showers and head showers; Meanwhile, kitchen faucets can also be applied to help us control the water flow and reduce the waste of water resources
- Size details: restrictor valve measures about 24 mm in diameter, 22 mm in length, 1/2 inch thread, suitable for most showers; Besides, the size of the insert reduces water flow is 14 x 16 x 6 mm, suitable size meet your daily usage
SaleBestseller No. 20 
RAINPOINT Water Flow Meter, Water Meter for Garden Hose, Flow Meter to Meassure Gallon/Lliter Water Consumption, Ideal for Outdoor Garden Watering RV Tank Pool Filling
- KNOW WHERE THE WATER GOES---Do you know how much water you've watered your garden or prepare how much water for a RV trip or how much water should be filled out of your pool? RAINPOINT water flow meter will let you know how to do. No guesswork on how much water you are using or should be using.
- HIGH-PRECISION WATER FLOW METER---Built-in with hall sensor and sensitive IC chip, processing water flow via impeller system, provide more precise calculation technology. The measurement tolerance is less than 5%, accuracy up to 1/10 gallon, great to control every drop of water and prevent over-watering.
- WIDE APPLICATION WITH 4 MODES---Freely change the mode from AUTO / CONSUMPTION / AVERAGE / TOTAL. AUTO Mode: real-time water flow rate | CONSUMPTION Mode: last-time water usage | AVERAGE Mode: daily average water usage of a week| TOTAL Mode: total water usage, Max Totalizer: 9,999.9 GAL.
- SIMPLE FAST CONNECTION---Water flow meter garden hose comes with 2 quick connectors to help you to connect with any hoses, faucets, sprinkler heads, and nozzles. Please follow the water flow direction to install the water flow meter.
- ONE BUTTON CONTROL---Garden hose flow meter is equipped with only-one button, so whether you want to change the modes, reset setting, on or off or other operations, just press the same button.
Editor’s Notes
We ranked and reviewed the top 20 Best calculating flow rate in 2023. With the support of 14515 customer’s reviews, we hope that this article can give you the most realistic view of these products.
