What LED Bulb Replaces a 60W or 100W Old Bulb? Australia's Wattage Equivalence Guide

The fast answer: a standard 60W old bulb is replaced by a Dulora 6.5W LED producing 806 lumens, and a 100W old bulb is replaced by an 11W LED producing 1,521 lumens. Both deliver CRI 90+ colour rendering, which is what makes them feel like the bulb you remember rather than a flat, washed-out replacement. Wattage on the LED is no longer a useful measure of brightness, which is why the equivalence works so unevenly across brands. The number that actually matters is lumens, and the rest of this guide explains why, with equivalence tables, fitting compatibility notes, and the colour temperature and dimmer details that determine whether your replacement actually feels right in the room.

Quick equivalence table for common old bulb wattages

If you're replacing a standard bulb in a lamp, pendant, wall light, or ceiling fitting, this table does most of the work.

The format choice depends on the fit. GLS A60 is the standard pear-shaped bulb used in most ceiling fixtures, table lamps, and pendants. Candle (C35) is the smaller, tapered shape used in chandeliers, sconces, and decorative fittings. Globe (G95 or G125) is the larger spherical bulb used in pendants and feature fittings where the bulb itself is part of the visual design. All Dulora LEDs in this table are CRI 90+, which means they render colour faithfully across the visible spectrum rather than washing out reds and skin tones, as budget LEDs typically do.

A note on the 5.5W candle. Dulora produces a higher-output C35 and G45 candle at 5.5W and 806 lumens, with a CRI of 90+, delivering the same brightness as the standard 60W GLS replacement in a smaller candle form factor. That output at that wattage in a candle bulb is unusual in the Australian market and is worth knowing about if you're replacing a 60W bulb in a chandelier or smaller fitting where the GLS A60 form factor is too large.

This table covers standard bulbs in B22 (bayonet cap) and E27 (Edison screw) fittings. Halogen downlights (MR16 and GU10) are a separate replacement scenario covered in its own section below.

Lumens versus watts: why lumens are the real measure of brightness

Old incandescent and halogen bulbs converted electricity to light at a roughly consistent ratio, so wattage worked as a reliable shorthand for brightness. A 60W incandescent always produces around 800 lumens. A 100W incandescent always produces around 1,600 lumens. The shorthand was so consistent that most people stopped thinking about lumens at all.

LED technology broke that shorthand. LEDs convert electricity to light at far higher efficiency, but the conversion ratio varies materially between products. A 6W LED from one manufacturer might produce 500 lumens. A 6W LED from another might produce 800. The difference comes down to the quality of the LED chip, the thermal management of the housing, the phosphor mix, and the optical design. Wattage on the box no longer tells you what's coming out of the bulb. Lumens do.

Australian Energy Rating labels and most reputable manufacturers prominently display lumen output on packaging. If a bulb's packaging is shy about its lumen figure, that's usually a sign the figure isn't impressive. Every Dulora bulb publishes its lumen output, colour temperature, CRI, and tested lifetime on the product page. The numbers are the spec, not a marketing claim.

For a deeper read on the relationship between LED wattage and brightness in fixtures with stated wattage limits, our guide on whether you can use a higher-watt LED equivalent in a 60W fixture covers the safety and electrical considerations.

Wattage equivalence in detail, by old bulb wattage

The table above is a fast reference. This section walks through the most common replacement scenarios in more practical detail, including which fittings sit at each wattage and what to expect from the LED replacement.

A brief regulatory note before the details. Australia phased out traditional incandescent bulbs from sale in stages between 2009 and 2013, and most mains-voltage halogen bulbs were phased out from 2020 under the federal Greenhouse and Energy Minimum Standards regulations. If you're replacing a bulb that's been working in a fitting for ten or fifteen years, it's most likely a halogen "energy saver" GLS, sold as a 60W or 100W incandescent equivalent during the transition years. The figures below show the equivalence between the two technologies because the brightness mapping is the same in both cases.

Replacing a 25W or 40W old bulb

These are the smaller decorative bulbs. A 25W is typically found in chandeliers, sconces, and small lamps where the fitting is part of the visual design. A 40W sits in bedside lamps, smaller pendants, and accent lighting. Both wattages are usually paired with a candle (C35), small globe (G45), or vintage filament bulb.

For a 25W replacement, the Dulora 2.5W C35 candle at 250 lumens is the standard match. For a 40W replacement, the 4W C35 at 470 lumens. The fittings at this wattage are usually E14 (small Edison screw) or B15 (small bayonet) rather than the standard B22 or E27, so check the base of your existing bulb before buying.

Replacing a 60W old bulb

This is the most common replacement in Australian homes. The 60W has been the workhorse domestic bulb since the arrival of electric lighting. It sits in living room table lamps, dining pendants, hallway fittings, bedroom lamps, and most of the secondary lighting around a typical home.

The Dulora replacement is a 6.5W GLS A60 that produces 806 lumens with a CRI of 90+. The fitting is almost always B22 or E27 in a standard GLS A60 shape. Browse our dimmable LED GLS A60 bulbs for the most common replacement format. If your fixture is dimmable, make sure the LED is dimmable as well. If you're not sure whether your fixture has a dimmer, the section on dimmer compatibility below explains how to tell.

Replacing a 75W old bulb

The 75W sits between the 60W workhorse and the 100W main room bulb. It's most often used in larger lamps, kitchen pendants, and secondary ceiling fittings where 60W feels slightly underpowered but 100W would be too much. The Dulora replacement is a 7.5W G95 or G125 globe producing 1,100 lumens at CRI 90+, in the larger decorative globe form factor, suited to pendant fittings and feature lighting.

The fitting is usually E27, occasionally B22. Browse our E27 LED bulbs for the full range across formats and colour temperatures.

Replacing a 100W old bulb

The 100W is the main room ceiling fixture, the large pendant in a stairwell or living area, the garage or laundry light, and the workshop bulb. It's the brightest standard bulb in the residential range. The Dulora replacement is an 11W GLS A60 producing 1,521 lumens at CRI 90+.

A note on form factor. A 100W incandescent or halogen GLS produces 1,600 lumens from a single filament. An 11W LED at 1,521 lumens is doing the same job from a smaller, more efficient package, but the light distribution can feel slightly different. If the fixture has a visible bulb, such as a pendant, an exposed lamp, or a chandelier, look for a filament-style LED rather than a frosted dome. The light's visual character better matches what was there before.

Fitting type matters: a quick check before you buy

Before you commit to a wattage, confirm the fitting. Australia uses two dominant standard bulb fittings, and they're not interchangeable.

B22 (bayonet cap) has two small pins on the bulb base. You install it by pushing it into the socket and twisting clockwise a quarter turn. It's the historical Australian standard, inherited from the British convention.

E27 (Edison screw) has a continuous thread on the base. You install it by screwing it into the socket clockwise. It's the European standard and is increasingly common in Australian homes, particularly in fittings imported from Europe or designed for the global market.

The smaller fittings (E14 and B15) have the same shape but are reduced in size for candle bulbs and chandelier fittings.

If you're uncertain about your fitting, our full B22 vs E27 fitting identification guide walks through the visual identification, the regional terminology, and the edge cases. Once you know your fitting, browse our bayonet cap (B22) LED bulbs or E27 LED bulbs.

Halogen downlights are a different question

If you're specifically replacing a 50W halogen bulb, there's a high chance it's a downlight rather than a standard bulb. Halogen downlights are the recessed ceiling spotlights found in kitchens, bathrooms, and modern hallways. They use one of two formats: MR16, a small reflector bulb powered by 12V via a transformer, or GU10, a similar reflector bulb powered by 240V mains.

A 50W halogen MR16 or GU10 is typically replaced by an LED of 5 to 7W producing 350 to 500 lumens, with a beam angle that matches the original, commonly 36° or 60° depending on the application. The replacement is straightforward at the bulb level. The complication is the transformer in 12V MR16 fittings: many older transformers were designed for the higher load of halogen and don't reliably drive low-load LED bulbs without flicker or premature LED failure.

If your replacement is a downlight, browse Dulora's MR16 and GU10 spotlight range for the bulbs themselves. For the fuller picture on transformer compatibility, beam angle continuity, and the IC-rated installation considerations specific to dichroic halogen downlights, our dichroic halogen downlight replacement guide covers the territory in detail. Dulora's downlight range is more limited than our standard bulb range; for complex retrofit jobs, a licensed electrician with downlight experience is worth the call.

Colour temperature: why your LED replacement may "feel wrong"

This is the section where most LED replacements quietly succeed or quietly fail.

Old incandescent and halogen bulbs ran at around 2700K colour temperature. The light was warm, slightly golden, and consistent across every domestic fitting in the country. There was no choice to make. You bought a bulb, you got 2700K.

LEDs run anywhere from 2200K (very warm, candlelight) to 6500K (cool, daylight). The colour temperature is printed on the packaging, but it's easy to miss, and the default stocked product in most hardware stores tends toward 4000K natural white or 5000K daylight because crisper, whiter light reads as "brighter" in a retail aisle. A reader who replaces their 60W incandescent table lamp with a 4000K natural white LED gets the lumen match they expected and a completely different room atmosphere. The bulb is doing exactly what it was designed to do. It's just designed for a different room.

The most common reason people are unhappy with their first LED replacement is colour temperature mismatch, not brightness. Get the colour temperature right and the bulb feels like the one you remember. Get it wrong and the room feels clinical, no matter how accurate the lumen match.

For the closest match to the old bulb experience, choose 2700K. It's the warm white standard, and it's what most domestic lighting in Australia has been since the incandescent era. If you want an even warmer, more candle-like atmosphere, particularly in bedrooms or evening living spaces, our 2200K very warm white LED bulbs sit at the warmest end of the residential range. For the longer read on choosing between warm white and natural white across different rooms, our warm white versus natural white guide covers the room-by-room recommendations.

Dimmer compatibility after the replacement

If your old bulb was on a dimmer, the LED replacement needs to be dimmable and compatible with the dimmer. Both halves matter.

LED bulbs are not all dimmable. A non-dimmable LED installed on a dimmer circuit will flicker, buzz, refuse to dim smoothly, and often fail prematurely. The product page specifies whether a bulb is dimmable. If it doesn't say dimmable, assume it isn't.

The dimmer itself is the second half of the equation. Old dimmers are typically leading-edge, designed for the smooth resistive load of incandescent and halogen bulbs. LEDs draw a much smaller, more variable load. Leading-edge dimmers handle this poorly, with symptoms ranging from flicker and buzz to a "snap-on" rather than a smooth dim, a restricted dimming range, and a shortened LED lifespan. Trailing-edge dimmers are designed for the low-load, capacitive behaviour of LED drivers, and are the recommended pairing for any modern LED installation.

Dulora GU10 and MR16 LEDs perform best with trailing-edge dimmers, and the same is true of our GLS A60, B22, and broader dimmable ranges. The dimmable technology in Dulora's current range has been field-tested across thousands of customer installations and commercial projects, which is reflected in the 36-month warranty. If your existing dimmer is leading-edge, you'll typically know within a week of replacement. The flicker, buzz, or unsmooth dim behaviour is unmistakable. Replacing the dimmer is a simple electrical job that delivers the smooth dim experience LED is capable of.

Any dimmer replacement involves mains wiring and should be done by a licensed electrician. If your LEDs flicker after a replacement and you're not sure whether the issue is the bulb, the dimmer, or the fixture, our guide to why LED lights flicker and how to stop it walks you through the diagnostic steps.

Lifetime, longevity, and what you're actually paying for

A 42W halogen GLS, the standard 60W replacement sold during the transition years, lasts around 3,000 hours and costs $3 to $5 to buy. A Dulora 6.5W LED replacement is rated at 25,000 hours, comes with a 36-month warranty, and costs more upfront. Over the lifetime of one Dulora LED, you'd buy and install a halogen bulb around eight times and use more than six times as much electricity to run it. The headline cost-per-bulb favours the halogen. The total cost of ownership favours the LED by a meaningful margin, before factoring in the time spent on eight bulb replacements.

Quality matters here. A high-quality LED with proper thermal management, a well-designed driver, and a tested phosphor mix hits its rated lifetime. A budget LED typically doesn't. The failure mode is usually thermal: heat builds up in the housing, the phosphor degrades, the colour shifts, and the lumen output drops well before the rated hours are reached. Buying the cheapest LED on the shelf often means replacing it again in two or three years rather than fifteen. The 36-month warranty on Dulora's dimmable range is in place because the product is built to outlast it.

Dulora's MR16 and GU10 LEDs sit at the higher end of the residential range, rated for 40,000 hours and backed by the same 36-month warranty. The longer lifetime reflects the demands of the downlight application: tight thermal envelopes, longer daily run hours, and limited access for replacement. Where the bulb is harder to reach, the lifetime needs to match.

For the related quality dimension that determines whether colours look natural under LED lighting, our CRI explainer explains what colour rendering means and why it matters in living spaces. For more demanding LED applications in 12V and 24V systems, our 12V and 24V LED Lights Australia buyer's guide covers low-voltage applications in detail.

Quick decision tree

Before buying, work through this short check:

1. Identify your fitting. Two pins on the side: B22. Threaded screw base: E27. Smaller equivalent: E14 or B15.

2. Match the lumens to your old bulb's wattage using the table above. Wattage on the LED is secondary.

3. Choose 2700K for the closest match to the old bulb feel. 2200K for a warmer evening atmosphere.

4. Confirm the LED is dimmable if your fixture has a dimmer. Non-dimmable LEDs on dimmer circuits will fail.

5. If the dimmer is older than the bulb you're replacing, it's probably a leading-edge dimmer. Replacing it with a trailing-edge dimmer delivers the clean dim experience LEDs are designed for.

Frequently Asked Questions

What LED wattage replaces a 60W incandescent bulb?

A 6.5W LED producing 806 lumens replaces a 60W incandescent or halogen GLS with matching brightness. Dulora's CRI 90+ GLS A60 LEDs deliver this output at 2700K, for the closest match to the warm atmosphere of the old bulb. Confirm B22 or E27 fitting before buying.

What LED wattage replaces a 100W incandescent bulb?

An 11W LED producing 1,521 lumens replaces a 100W incandescent or halogen GLS. Dulora's CRI 90+ GLS A60 LED at 11W is the standard replacement, available in B22 and E27 fittings. Filament-style LEDs better match the visual character of the original bulb in fixtures where the bulb is visible.

Are LED bulbs brighter than the old bulbs they replace?

Brightness is measured in lumens, not watts. An LED matched to the old bulb's lumen output—around 800 lumens for a 60W replacement and 1,600 lumens for a 100W replacement—feels equivalent in brightness. The wattage drops dramatically because LEDs are far more efficient at converting electricity to visible light.

Why does my LED replacement feel cooler or harsher than the old bulb?

The old bulb was almost certainly 2700K. The LED is probably 3000K, 4000K natural white, or higher. Colour temperature is the most common reason a brightness-matched LED replacement feels wrong in a familiar room. Buy a 2700K LED for the closest match, or a 2200K LED for a warmer, more atmospheric tone.

Can I use my existing dimmer with LED bulbs?

Sometimes, but not reliably. Older dimmers are typically leading-edge, designed for halogen and incandescent loads. LEDs run on a different electrical profile and often flicker, buzz, or dim unevenly on leading-edge dimmers. Trailing-edge dimmers are designed for LED operation and deliver smooth, full-range dimming. If your setup misbehaves after replacement, the dimmer is the most likely culprit.

Is it cheaper to replace just the bulb or the whole light fixture?

Replacing the bulb is almost always cheaper unless the fixture itself is failing. LED bulbs in B22 and E27 fittings drop straight into existing fixtures with no rewiring. The exception is halogen downlight fixtures with old transformers, where the entire fixture may need to be upgraded to reliably support modern LED bulbs.