Binnenkweektool

Kweeklamp Calculator

Bereken aanbevolen kweeklamp wattage, doel PPFD, armatuur telling en DLI voor hydroponie, kweektenten en binnentuinen.

Enter the size of your grow space floor area.

Choose square meters or square feet.

Different growth stages need different light intensity.

Enter your current fixture wattage to estimate how many lights you need.

Recommended total wattage 420 W
Based on area and growth stage
Suggested PPFD 500 µmol/m²/s
Estimated fixture count 2 lights
Suggested hanging height 35–50 cm

Recommended grow light products

LED kweeklamp

Een geschikte armatuur voor deze kweekopstelling, met gebalanceerde output voor canopy coverage en efficiënte binnenkweek.

Length of the grow area.

Width of the grow area.

Choose meters or feet.

Sets target PPFD range.

Typical efficient LED fixtures are often in the 2.3–3.1 µmol/J range.

Used to estimate how many fixtures are needed.

Accounts for real-world losses from fixture spread, height, and room conditions.

Needed for DLI estimation from your target PPFD.

Estimated total fixture wattage 314 W
Estimated from target PPFD, efficacy, and real-world coverage factor
Target PPFD 500 µmol/m²/s
Estimated PPF needed 850 µmol/s
Estimated fixture count 1 light
Estimated DLI 32.4 mol/m²/day

Recommended fixtures for this setup

LED kweeklamp

Een geschikte armatuur voor deze kweekopstelling, met gebalanceerde output voor canopy coverage en efficiënte binnenkweek.

Average PPFD at canopy level in µmol/m²/s.

How many hours the lights are on per day.

Used to compare your DLI with typical stage targets.

Daily Light Integral 32.4 mol/m²/day
Calculated from your PPFD and daily light hours
Typical target range 20–35 mol/m²/day
Status Within range
Suggested next step Maintain current intensity

Products to optimize lighting

LED kweeklamp

Een geschikte armatuur voor deze kweekopstelling, met gebalanceerde output voor canopy coverage en efficiënte binnenkweek.

Grow light calculator for hydroponics and indoor growing

This grow light calculator helps indoor growers estimate the right LED grow light wattage, fixture count, target PPFD, and daily light integral for tents, grow rooms, hydroponic systems, and indoor gardens. It is useful for seedlings, vegetative growth, flowering plants, fruiting crops, and general indoor cultivation.

Use the calculator to estimate how much light your grow area needs, compare fixture sizes, and plan more efficient lighting coverage for better canopy development and more consistent plant growth.

How this grow light calculator works

The calculator estimates lighting needs based on grow area and plant stage. In advanced mode, it also uses fixture efficacy and a real-world coverage factor to estimate how much total light output and wattage are needed for your space.

Required PPF ≈ Target PPFD × Grow Area
Estimated Wattage ≈ Required PPF ÷ Fixture Efficacy

Because real grow rooms are not perfect, the coverage factor adjusts for losses caused by hanging height, spread, layout, and room conditions.

What each parameter means

  • Grow area: total canopy floor area that needs light coverage.
  • Plant stage: growth phase, which changes target light intensity.
  • PPFD: photosynthetic photon flux density at canopy level.
  • PPF: total light output of the fixture in µmol/s.
  • Fixture efficacy: how efficiently a grow light converts watts into usable photons.
  • Coverage factor: practical adjustment for real-world lighting losses.
  • DLI: total usable light plants receive per day.
  • Light hours per day: photoperiod used to calculate DLI.

Typical target PPFD by growth stage

  • Seedling / clone: gentle light levels, typically around 100–300 µmol/m²/s.
  • Vegetative stage: moderate light levels, typically around 300–600 µmol/m²/s.
  • Flowering / fruiting: stronger light levels, typically around 600–900 µmol/m²/s.

These are practical general-use targets. Final intensity depends on crop type, cultivar, environment, CO₂ level, fixture design, and grower strategy.

How to calculate DLI

The DLI formula is:

DLI = PPFD × 3600 × light hours ÷ 1,000,000

DLI helps growers understand the total daily light plants receive, not just momentary light intensity. This is useful when comparing different photoperiods, dimming strategies, and growth stages.

Best practice for indoor growers

  1. Match light intensity to plant stage.
  2. Keep fixture height consistent across the canopy.
  3. Use DLI, not only wattage, when evaluating lighting strategy.
  4. Check real canopy PPFD with a PAR meter if possible.
  5. Combine strong lighting with proper climate, nutrients, irrigation, and airflow.
Verzending. 3 dagen EU-levering

7 tot 15 EUR onder 30kg. Zie meer op de Verzendingsdetails pagina.

60 dagen retourneren

U kunt tot 30 dagen na aankoop een terugbetaling of vervanging krijgen.

Maar we staan meestal aan de kant van de klant, dus we kunnen een termijn van 60 dagen geven!

2 maanden deskundige ondersteuning na aankoop

Het is gratis.

Wij zijn een team van 10 met een decennium aan ervaring in kweken en tuinieren, dus als u hulp nodig heeft, begeleiden we u binnen 2 maanden na aankoop naar uw doel.

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Over ons. Onze 9-jarige geschiedenis

GoToGarden begon in 2017 uit persoonlijke frustratie. Onze oprichter was een hobbykweker die uren doorbracht met het navigeren door online winkels die aanvoelden alsof ze waren gebouwd door mensen die nog nooit een plant hadden aangeraakt — rommelige lay-outs, vage productbeschrijvingen, geen echte begeleiding bij wat je eigenlijk moest kopen of waarom. Hij wist dat er een betere manier moest zijn.

Zie meer op de Over ons pagina

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