Incandescent to LED Conversion Guide

By Editorial Team • Updated March 2, 2026

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The classic incandescent bulb — the one Edison would recognize — wastes about 90% of its energy as heat. Only a sliver actually becomes light. Switching to LED gives you the same brightness at roughly 85% less energy. The chart below matches every common incandescent wattage to its LED equivalent, so you know exactly what to buy.

💡 Lumie's Tip: Stop thinking in watts — start thinking in lumens. Watts measure energy use; lumens measure brightness. A 9W LED produces 800 lumens, the same as a 60W incandescent. Match the lumens, and you'll get the same light.

Incandescent to LED Conversion Chart

Find your old bulb's wattage on the left. The LED column shows the wattage needed for equal brightness. Lumen values are industry-standard ranges — always check the product packaging for exact specs.

Incandescent Watts	Lumens (Brightness)	LED Watts	Energy Savings	Details
15W	100–125 lm	1–2W	~87%	VIEW
25W	200–250 lm	3–4W	~85%	VIEW
40W	400–450 lm	5–6W	~86%	VIEW
60W	750–900 lm	8–10W	~85%	VIEW
75W	1,000–1,200 lm	11–13W	~85%	VIEW
100W	1,500–1,700 lm	14–16W	~85%	VIEW
150W	2,600 lm	22–25W	~85%	VIEW
200W	3,000–3,200 lm	28–32W	~86%	VIEW
300W	4,800–5,000 lm	40–45W	~85%	VIEW
500W	8,000–8,500 lm	65–75W	~85%	VIEW
750W	11,000–12,000 lm	90–100W	~87%	VIEW
1000W	15,000–16,000 lm	120–140W	~87%	VIEW
1500W	22,000–24,000 lm	180–200W	~87%	VIEW

Energy savings are approximate and based on typical LED efficacy of 90–130 lm/W vs. incandescent efficacy of 10–15 lm/W. Actual savings depend on the specific LED product.

Why Switch from Incandescent to LED?

Incandescent bulbs have been the standard for over 100 years, but they're genuinely one of the least efficient lighting technologies ever mass-produced. Here's the real picture:

90% waste. An incandescent bulb converts only about 10% of its energy into visible light. The rest is heat. You're essentially running a tiny heater that happens to glow.
Short lifespan. The typical incandescent lasts 1,000–2,000 hours — roughly 1 year at 3 hours/day. A quality LED lasts 25,000+ hours, which is 22+ years at the same usage.
Real dollar savings. Replacing a single 60W incandescent with a 9W LED saves about $7–8 per year at average US electricity rates ($0.16/kWh). In a 30-bulb home, that's over $200/year — though it depends on your local rate and usage hours.
Same warm glow. Modern LEDs at 2,700K match the warm tone of incandescents almost perfectly. If you miss the vintage Edison look, LED filament bulbs replicate that aesthetic beautifully.

💡 Lumie's Tip: Love the look of Edison-style filament bulbs? Look for LED filament bulbs (sometimes labeled ST19 or ST64). They give you that warm, visible-filament aesthetic at 2,200–2,400K — identical vibe, 85% less energy, and they last 15,000+ hours instead of 1,000.

Are Incandescent Bulbs Still Available?

Mostly no. The US Department of Energy's 2022 energy efficiency rule requires general-purpose bulbs to produce at least 45 lumens per watt — a standard no traditional incandescent can meet (they produce just 10–15 lm/W). The EU, Canada, Australia, and many other countries have similar bans in place.

You may still find specialty incandescents (appliance bulbs, rough-service bulbs, decorative shapes) at some retailers, but the standard A19 incandescent is effectively gone. The good news: LED replacements are better in every measurable way and a 4-pack now costs under $10.

Frequently Asked Questions

What LED replaces a 60-watt incandescent?

Any LED producing 800 lumens is the equivalent of a 60W incandescent. This typically requires 8–10 watts of LED power. Look for "60W equivalent" on the packaging, but always verify the lumen output is 750–900 lm — some budget brands are loose with equivalency claims.

Can I put a higher-watt LED in a fixture rated for 60W?

Usually, yes. Fixture wattage ratings refer to heat load, not brightness. A 15W LED (100W equivalent brightness) produces far less heat than a 60W incandescent, so it's safe in a "Max 60W" fixture. Just don't exceed the fixture's stated LED wattage limit if one is listed.

Will an LED look the same as my old incandescent?

At 2,700K (Soft White), an LED produces the same warm, yellowish glow as a traditional incandescent. The color rendering is typically equal or better (most LEDs are CRI 80+, with premium options at CRI 90+). The main visual difference: LEDs may be slightly more directional in certain fixture types.

Do LEDs work in enclosed fixtures?

Only if the LED is labeled "enclosed fixture rated." Standard LEDs trap heat in sealed fixtures, which shortens their lifespan. Always check the packaging — this is one of the most common mistakes people make when switching.

Why does my LED flicker on a dimmer?

Most old dimmer switches were designed for incandescent loads and don't work well with LEDs. You need an LED-compatible dimmer (Lutron Caseta, Leviton, or Legrand are reliable choices). Also make sure the LED bulb is labeled "dimmable" — non-dimmable LEDs will always flicker on a dimmer.

💡 Lumie's Tip: If you're replacing incandescents throughout your home, start with the high-use rooms — kitchen, living room, and hallways. A single 100W-to-14W LED swap saves about $13/year. Multiply that by every lamp and fixture, and the numbers get serious fast.