The Tools
Four calculators. All free. No fluff.
Built by lighting industry professionals for real-world use. Get instant, accurate results — no login, no paywall.
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Australian Standards
All calculations reference AS/NZS 3000, AS/NZS 1680 and Australian electrical practice. US mode available for NEC and AWG.
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Real Formulas
Not guesswork. Voltage drop uses the copper resistivity formula (ρ = 0.0175 Ω·mm²/m). Lux uses photometric point and zonal calculations.
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Works on Site
Fully mobile-optimised. Use it on your phone in the field — no app to download, no login, no data stored.
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No Sign-Up Ever
Free, forever. No account, no email, no subscription. Just open a calculator and use it.
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Find Products Fast
Results include Amazon AU and US product links so you can source drivers, cable and fittings without leaving the page.
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Educational
Every result includes the formula used and plain-English explanations, so you understand the why — not just the number.