A bulb wattage equivalent chart maps light output (lumens) to the watts consumed by each bulb technology — incandescent, halogen, CFL, and LED. Because LED bulbs produce the same brightness as an incandescent at 75–80% less energy, comparing watts alone no longer tells the full story. Use this tool to find the right LED replacement wattage, calculate annual electricity costs, and see how much you save by switching.
Find Equivalent Wattage
Enter any bulb's wattage to see the equivalent in all other types.
Bulb Equivalency Chart
| Lumens | Incandescent | Halogen | CFL | LED |
|---|
Click any row to convert that brightness level. CFL and LED values show typical ranges.
Annual Cost & Savings Calculator
| Bulb Type | Wattage | Annual Cost | Lifespan | Replacements/yr |
|---|
Color Temperature Guide
Matches classic incandescent. Cozy and inviting. Best for living rooms, bedrooms, and dining areas.
Slightly whiter than 2700K. Great for kitchens, hallways, and bathrooms where more clarity is needed.
A neutral middle ground between warm and cool. Common in offices and retail environments.
Crisp and bright. Ideal for workspaces, garages, craft rooms, and under-cabinet lighting.
Mimics natural midday sunlight. Great for reading, detail work, photography studios, and makeup mirrors.
Very blue-white, similar to an overcast sky. Used in commercial spaces, hospitals, and display lighting.
Common Bulb Shapes
| Shape Code | Common Name | Typical Use | LED Available? |
|---|---|---|---|
| A19 | Standard bulb | Table lamps, ceiling fixtures | Yes |
| A21 | Large standard | High-lumen table lamps (100W+ equiv) | Yes |
| BR30 | Flood / recessed | 6-inch recessed cans, track lighting | Yes |
| BR40 | Wide flood | 8-inch recessed cans, high ceilings | Yes |
| PAR20 | Narrow flood | Track lighting, accent lighting | Yes |
| PAR30 | Medium flood | Recessed cans, outdoor fixtures | Yes |
| PAR38 | Wide outdoor flood | Floodlights, outdoor security lighting | Yes |
| MR16 | Multifaceted reflector | Track lighting, display cases | Yes |
| G25 | Globe | Vanity mirrors, pendant fixtures | Yes |
| C7 / C9 | Candelabra | Chandeliers, decorative fixtures | Yes |
How to Use the Bulb Wattage Equivalent Calculator
Switching from incandescent or halogen bulbs to LED can cut your lighting electricity bill by up to 80%, but finding the right replacement requires understanding lumens — not watts. Watts measure energy consumption; lumens measure actual brightness. This free bulb wattage equivalent tool helps you convert any bulb's wattage to its equivalent in all other technologies and calculate exactly how much you will save.
Step 1: Find Your Equivalent Wattage
In the "Find Equivalent Wattage" section, select your current bulb type (Incandescent, Halogen, CFL, or LED) and enter its wattage. Click Convert to see the equivalent wattage for all other bulb types along with the approximate lumen (brightness) level. For example, a 60W incandescent produces around 800 lumens — the same brightness as an 8–12W LED.
Step 2: Use the Equivalency Chart
The full LED equivalent wattage chart shows six brightness levels from 450 lumens (dim accent light) to 3000+ lumens (bright area lighting). Click any row to auto-populate the converter with that row's values. The LED column is highlighted in yellow because LEDs are the recommended replacement for all other bulb types.
Step 3: Calculate Annual Costs and Savings
The annual cost calculator shows exactly how much each bulb type will cost to run over a year. Enter your hours of use per day, your electricity rate (check your utility bill — the US average is around $0.13/kWh), and the number of bulbs. The tool calculates the annual electricity cost for each technology at the same brightness level, and shows how much you save by switching from incandescent to LED.
Understanding Lifespan and Replacement Costs
The cost table includes lifespan data so you can factor in bulb replacement frequency. A standard incandescent lasts about 1,000 hours — at 4 hours per day, that is roughly 8 months. An LED rated for 25,000 hours at the same usage lasts over 17 years. The replacement frequency column shows how many bulbs per year you would buy, which adds to your total cost of ownership beyond electricity alone.
Choosing the Right Color Temperature
Once you know the right lumen level and wattage, choose a color temperature (measured in Kelvin) to match your space. 2700K warm white matches the classic incandescent glow and suits living areas. 4000K cool white is sharper and better for kitchens and workspaces. 5000K daylight mimics outdoor midday light and works well for reading, craft rooms, and task lighting. The color temperature guide section includes a visual scale to help you choose.
Choosing the Right Bulb Shape
Make sure the LED you choose physically fits your fixture. The A19 shape is the standard household bulb shape and fits most table lamps and ceiling fixtures. BR30 and BR40 are used in recessed "can" lights. PAR38 bulbs are for outdoor floodlights. All common shapes have LED equivalents, and LEDs fit the same base socket (E26, E12, GU10, etc.) as the bulb you are replacing.
FAQ
Is this bulb wattage equivalent calculator free?
Yes, this tool is completely free to use with no limits and no signup required. All calculations run instantly in your browser and no data is sent to any server.
Is my data private when using this calculator?
Yes, everything runs locally in your browser. Your inputs are never sent to a server, stored, or tracked. You can even use the tool offline once the page has loaded.
What is the LED equivalent of a 60-watt incandescent bulb?
A 60W incandescent bulb produces around 800 lumens of light. An LED bulb producing the same brightness uses only 8–12W — roughly 80% less energy. When replacing a 60W incandescent, look for an LED labeled '60W equivalent' or '800 lumens'.
What does lumens mean and why does it matter more than watts?
Lumens measure the actual brightness (light output) of a bulb. Watts measure energy consumption, not brightness. Because LEDs produce more light per watt than older technologies, comparing lumens is the correct way to find an equivalent replacement bulb when switching bulb types.
How much can I save by switching from incandescent to LED?
Replacing a single 60W incandescent with an 8W LED, used 4 hours per day at $0.13/kWh, saves roughly $12–13 per year on that one bulb. Across a whole home with 20+ bulbs, annual savings often exceed $150–200. LEDs also last 25–50x longer than incandescent bulbs, further reducing replacement costs.
What is color temperature and which should I choose?
Color temperature (measured in Kelvin) describes how warm or cool the light looks. 2700K is warm white like a traditional incandescent — ideal for living rooms and bedrooms. 3000K is soft white, good for kitchens. 4000K is cool white for workspaces. 5000K–6500K is daylight, best for garages, studios, and task lighting.
How long do LED bulbs last compared to incandescent?
Standard incandescent bulbs last about 1,000 hours. Halogen bulbs last 2,000–4,000 hours. CFL bulbs last around 8,000–10,000 hours. LED bulbs typically last 15,000–50,000 hours — 15 to 50 times longer than incandescent. At 4 hours per day of use, a quality LED can last 10–30 years before needing replacement.
Can I replace any incandescent bulb with an LED?
In most cases, yes. Standard A19 LED bulbs fit the same E26 medium base as incandescent bulbs. For dimmable applications, make sure you buy a dimmable LED and verify your dimmer switch is LED-compatible — older dimmers designed for incandescent bulbs may flicker or hum with LEDs. Specialty shapes like BR30, PAR38, and MR16 also have LED equivalents.
What is the difference between CFL and LED bulbs?
Both CFL (compact fluorescent) and LED bulbs are more efficient than incandescent bulbs, but LEDs are significantly better. LEDs reach full brightness instantly (CFLs take 30–60 seconds to warm up), last 2–5x longer, contain no mercury, and are fully dimmable with the right dimmer. LEDs have largely replaced CFLs as the recommended energy-efficient choice.