Best Light Meter For Plants: Compare Lux, PAR and DLI Meters

#1 · Best Overall

1. AquaHorti AH-Quantuv

• Package Dimensions: 7.4 x 4.02 x 1.65 in
• Weight: 6.7 oz

Best for: PAR and UVA grow-light analysis.

Why it ranks #1: Measures PAR from 400–750 nm and UVA from 320–400 nm, while showing blue, green, and red PAR contributions for grow-light analysis.

Separate PAR and UVA measurements give the AquaHorti AH-Quantuv a more grow-light-specific role than a lux-only meter. It covers PAR from 400–750 nm and UVA from 320–400 nm, helping growers examine both plant-relevant light bands and how a fixture performs.

The meter displays total PAR alongside blue, green, and red contributions, so growers can inspect spectral composition rather than relying on one aggregate figure. Its UVA measurement adds another view of fixture output, useful when checking whether a grow light delivers UVA. Together, the breakdown and two measurement bands support more detailed light-distribution analysis than a simple brightness reading. It is a focused grow-light assessment tool; the supplied features do not describe daily-light-integral classification or storage of DLI history.

Skip it if you want a direct sunlight category and up to 10 days of DLI records; EvoDevice EVO-20 provides those functions.

This fits growers analyzing grow-light spectrum, PAR output, and UVA rather than seeking a simple ambient lux reading. Its band-specific display offers useful detail, while gardeners who prioritize sunlight categories and accumulated daily exposure should consider a DLI meter.

Listed on Amazon as: AH-Quantuv PAR Meter for Grow Lights, PPFD Meter 400-750nm with UVA Measurement 320-400nm, Shows PAR Breakdown of Blue Green Red, Records PAR & UVA for Light Distribution Mapping

#2 · Best DLI Tracker

2. EvoDevice EVO-20

• Package Dimensions: 7.32 x 3.19 x 1.73 in
• Weight: 5.3 oz

Best for: Daily sunlight placement decisions.

Why it ranks #2: Displays daily light accumulation in mol/m2/day, classifies sun exposure, and stores up to 10 days of DLI history for garden placement.

The EVO-20 converts daily light integral into direct Full Sun, Partial Sun, Partial Shade, or Shade categories, enabling gardeners to make plant-placement decisions without interpreting charts. Its display also shows accumulated DLI in mol/m2/day, so the category comes with a numerical daily-light reading.

Rather than measuring only a momentary brightness level, the meter records daily DLI and stores up to 10 days of history. That record lets gardeners compare accumulated exposure across days when deciding where plants or landscape beds belong. The displayed sunlight category offers a quick interpretation, while the numerical mol/m2/day value retains the underlying measurement. Its focus is daily exposure classification; the supplied features do not list PAR color breakdown or UVA measurement for analyzing a grow-light spectrum.

Skip it if you need blue, green, and red PAR contributions plus UVA readings; AquaHorti AH-Quantuv provides those grow-light measurements.

This suits gardeners and landscape users choosing plant locations according to accumulated daily exposure rather than a single lux reading. Its categories and 10-day DLI history aid placement decisions, but it is not a spectral PAR and UVA analyzer.

Listed on Amazon as: EVO-20 DLI Light Meter – Smart Sunlight Classifier for Garden & Landscape Use | Identifies Full Sun, Partial Sun, Partial Shade & Shade Based on Daily Light Integral, 10 Days of DLI History

#3 · Best Rotating Probe

3. TopTes TS-710

• Weight: 4.8 oz

Best for: Angled plant-canopy readings.

Why it ranks #3: Its 180-degree rotating sensor helps measure from different angles; it covers 0.1–200,000 lux and samples every 0.5 seconds.

A 180-degree rotating sensor lets the TopTes TS-710 angle its probe toward light from multiple directions, enabling more flexible checks around plants and their canopies. Its 0.5-second sampling and backlit 2.25-inch display support repeated readings and viewing in low-light conditions.

The rotating probe can be directed toward a window, lamp, or plant surface without requiring the whole meter to face the same way. Its range spans 0.1–200,000 lux and 0.1–20,000 foot-candles, with switching between units for different comparisons. Maximum and minimum recording can summarize variation over a measurement period, while data hold freezes a reading for note-taking. The 0.5-second sampling rate keeps updates frequent as you reposition the sensor.

Skip it if you need a sunlight category based on accumulated DLI; EvoDevice EVO-20 classifies exposure and stores up to 10 days of DLI history.

The TS-710 fits growers who want to aim a rotating probe around plants and compare lux or foot-candle readings over time. Its held and maximum/minimum values help with spot checks, but it does not report PAR or daily light integral.

Listed on Amazon as: TopTes TS-710 Light Meter, Lux/Foot Candles Meter with 180o Rotating Sensor, 0.1~200,000 Lux Range, Large Backlit Display, Light Meter for Plants, Car Headlights, Home & Office LEDs (Includes Battery)

#4 · Wide-Angle Sensor

4. DANOPLUS DP-331

• Package Dimensions: 7.36 x 4.84 x 2.05 in
• Weight: 5.3 oz

Best for: Flexible-angle sensor placement.

Why it ranks #4: The separate sensor rotates 360 degrees and measures 0–200,000 lux, offering flexible positioning around plants and in varied spaces.

A 360-degree rotating sensor lets the DANOPLUS meter point its probe in any direction, enabling light checks around plants without fixed sensor orientation. It measures from 0 to 200,000 lux, offers four lux ranges, and can switch to foot-candles.

The rotating sensor can be adjusted to face a lamp or plant surface, while the meter’s separate sensor layout supports positioning independently of the display. Auto range setting selects among 200, 2,000, 20,000, and 200,000 lux ranges, reducing the need to choose a range manually. Switching to foot-candles offers another unit for comparisons. Its stated accuracy is ±4% ±10 digits across a 400–700 nm spectral range, defining the listed measurement characteristics.

Skip it if you need UVA measurements beyond visible-light checks; AquaHorti AH-Quantuv measures UVA from 320–400 nm as well as PAR.

This fits growers who need to aim a sensor freely while taking lux or foot-candle readings around plants. Its rotating placement and auto-ranging simplify spot checks, but its listed 400–700 nm spectral range is not a UVA assessment.

Listed on Amazon as: Light Meter Digital Lux Meter Handheld Illuminance Light Meter with 360 Degree Rotating Sensor, 4 Digit LCD Display 0~200,000 Measurement Range Luxmeter Tester for Plants, Headlights, Home & Office

#5 · Best Split Sensor

5. URCERI MT-92H

• Package Dimensions: 5.55 x 2.87 x 2.52 in
• Weight: 7 oz

Best for: Remote-probe plant measurements.

Why it ranks #5: A separate probe can reach narrow spaces while the meter measures up to 200,000 lux, with stated 0.5-second refresh rates.

A split sensor lets the URCERI MT-92H place its probe separately from the display, enabling light checks in narrow or hard-to-reach spaces. Its stated 0–200,000-lux range and 0.5-second refresh rate make it suited to examining changing illumination around crowded plant arrangements.

Position the slim remote probe where a one-piece meter may not fit, while keeping the display unit separate for easier viewing. The 0.5-second refresh rate helps track changes as you move the probe between leaves, shelves, or other tight locations. Resolution down to 0.1 lux supports fine changes in the stated range, and switchable lux/foot-candle units accommodate different measurement preferences. This split layout is the central workflow benefit, though it requires handling a separate probe and display.

Skip it if you prefer one compact handheld body without a separate probe; UNI-T UT383 is listed as a compact, easy-to-use meter.

The MT-92H suits growers checking light inside crowded shelves or tight plant spaces where probe placement matters. Its separated sensor aids access, but shoppers seeking a single compact handheld form should account for the probe-and-display arrangement.

Listed on Amazon as: MT-92H Light Meter with Split Sensor Lux/Foot Candles Meter 500ms Refresh Rates Range up to 200,000 Lux Switchable Backlight Temperature Measurer 14°F-140°F

#6

6. Dr.meter 1330B-V

• Weight: 12 oz

Best for: Fast-response lux checks.

Why it ranks #6: Offers lux and foot-candle conversion, fast readings at twice per second, and peak data recording for checking changes in growing areas.

Two readings per second give the Dr.meter illuminance meter a fast update cadence for checking changing light around plants. Its stated 0–200,000-lux range covers a broad range of brightness, and FC/LUX conversion lets you work in either of the two listed units.

Switching between foot-candles and lux lets you keep readings in the unit you use for your plant notes or comparisons. The twice-per-second response updates measurements rapidly as you reposition the meter, making it useful for checking multiple spots in a growing area. Its rubber material is described as cushioning and impact resistant, while the dust- and scratch-proof sensor design and a cover that closes when idle support handling and storage between measurements.

Skip it if you need plant-light categories based on accumulated daily exposure; EvoDevice EVO-20 reports DLI and sunlight classifications.

This is a practical fit for growers who want quick lux or foot-candle spot checks and a meter with a protected sensor for storage. It reports illuminance, so choose a DLI or PAR meter when those plant-light measures guide your decisions.

Listed on Amazon as: Dr.meter Digital Illuminance Light Meter 0-200,000 Lux Range Lux Meter

#7

7. Soonkoda S8608

• Package Dimensions: 6.54 x 2.24 x 1.57 in
• Weight: 4.6 oz

Best for: Flexible indoor-outdoor checks.

Why it ranks #7: Its 200,000-lux maximum, automatic range conversion, and lux or foot-candle units support general brightness checks around indoor and outdoor plants.

Automatic range conversion across readings up to 200,000 lux helps the Soonkoda S8608 handle varied brightness without manual range selection. It also switches between lux and foot-candles, giving plant growers a straightforward way to compare light readings across indoor and outdoor locations.

The large display presents visible-brightness measurements, while the automatic range conversion can simplify moving between dimmer indoor areas and brighter spots. Lux and FC switching supports comparisons in either unit, and the stated MAX/MIN and data-hold functions help capture high, low, or fixed readings during a location survey. A backlight supports reading the display in lower-light settings. Its stated accuracy varies by illuminance level, and the manual is provided in English and Chinese.

Skip it if you need PAR breakdown and UVA readings from grow lights; AquaHorti AH-Quantuv reports both.

Choose this for indoor or outdoor plant-location surveys where lux or foot-candle readings, range conversion, and held values are useful. Its visible-brightness measurement is not a PAR or UVA assessment, so it does not provide those grow-light details.

Listed on Amazon as: Digital Illuminance Light Meter Tester 200,000Lux Meter (18,500FC) Luxmeter Lighting Intensity Brightness Measurement Tool for Indoor Outdoor Grow Plants Film Photography lumens LED Photometer

#8

8. URCERI Digital Lux Meter

• Weight: 6.7 oz

Best for: Wide-range home grow checks.

Why it ranks #8: Measures up to 200,000 lux with stated accuracy and ambient temperature measurement, plus minimum and maximum readings for routine light checks.

A 0–200,000-lux range lets the URCERI meter cover readings from dim indoor spots to bright light, while its temperature measurement adds ambient context. For plant placement checks around the home, the color LCD and compact handheld body keep readings and the meter easy to manage.

Switch between lux and foot-candles with the FC/LUX button to work in the unit you prefer, and use MIN/MAX readings to compare light across plant locations. Data hold can preserve a reading while you note it, while automatic power-off and a low-battery indicator help manage routine use. The meter also measures ambient temperature, so you can check that alongside illumination. Above 1,000, readings default to Klux or KFc, which affects how the displayed value is expressed.

Skip it if you need PAR or UVA measurements to assess grow-light output; AquaHorti AH-Quantuv measures PAR and UVA separately.

This suits home growers comparing illumination around several plants who also want an ambient temperature reading. Its broad lux range and hold function help with spot checks, but growers assessing PAR or daily light integral should choose a meter that reports those measures.

Listed on Amazon as: Light Meter Digital Illuminance Meter Handheld Ambient Temperature Measurer, Range up to 200,000 Lux, Luxmeter with 4 Digit Color LCD Screen

#9

9. UNI-T UT383

• Package Dimensions: 6.73 x 2.52 x 1.65 in
• Weight: 5 oz

Best for: Compact handheld lux readings.

Why it ranks #9: A compact general illuminance meter with lux and foot-candle readings, 0–199,900-lux range, backlit display, and 0.5-second sampling.

A compact form and large backlit four-digit LCD make the UNI-T UT383 straightforward to carry between plant locations and read in dimmer settings. Its range reaches 199,900 lux, with lux and foot-candle display options for routine illuminance comparisons.

The 0.5-second sampling time updates readings as you move the meter between a window, shelf, or grow-light position. Max/min recording and data hold help capture variation or preserve a value while you make a note. Overload indication signals when a reading exceeds the meter's range, while auto shutdown and a low-battery indicator support ordinary handheld use. Its measurements are in lux or foot-candles, making it an illuminance tool rather than a PAR-specific analyzer.

Skip it if you need PAR breakdown and UVA readings for a grow light; AquaHorti AH-Quantuv measures PAR and UVA.

This suits growers wanting a compact handheld meter for routine lux or foot-candle checks, with held and maximum/minimum readings. Its range tops out at 199,900 lux, and its display does not provide PAR or UVA analysis.

Listed on Amazon as: UNI-T UT383 Light Meter Digital Illuminance Meter Lux Meter

#10

10. POROMETISTO LT01

• Package Dimensions: 7.4 x 3.43 x 1.93 in
• Weight: 5.6 oz

Best for: Lux and FC range checks.

Why it ranks #10: Measures up to 200,000 lux and 20,000 foot-candles, but the supplied details do not identify a plant-specific PAR or DLI measurement.

A dual digital and analog bar-graph display gives the POROMETISTO meter two ways to view readings, helping growers see both the numerical level and its movement. It measures up to 200,000 lux and 20,000 foot-candles for broad-range plant-light checks.

The stated range reaches from dim indoor corners to bright outdoor sunlight, making the meter relevant for comparing different plant locations. Sampling twice per second helps capture changing illumination, while the analog bar graph provides a visual indication alongside the digital reading. Its built-in green backlight supports viewing the display in lower-light settings. The product specifies accuracy under standard incandescent lamps, so that stated accuracy condition matters when interpreting measurements under other light sources.

Skip it if you need measurements of PAR and UVA bands rather than illuminance; AquaHorti AH-Quantuv measures those grow-light bands.

This suits growers who want broad lux and foot-candle coverage with a bar graph for quick visual comparison. Note that its stated accuracy is specified under standard incandescent lamps, and it does not provide the PAR and UVA readings of a grow-light analyzer.

Listed on Amazon as: Digital Handheld Illuminance Light Meter POROMETISTO, 1-200,000 Lux