UseCalcPro
Home
MathFinanceHealthConstructionAutoPetsGardenCraftsFood & BrewingTools
Blog
  1. Home
  2. Auto

Headlight Bulb Finder Calculator

Look up the correct bulb size for every position on your vehicle, compare halogen vs LED vs HID technology, and find cross-compatible replacements.

Vehicle Fitment

Select Vehicle

Low Beam

---

High Beam

---

Technology

Stock Halogen

Color Temperature Scale

3000K4300K5000K6000K8000K

Select a vehicle to see bulb fitment

Frequently Asked Questions

Q

How do I find the right headlight bulb for my car?

Select your vehicle's make and model in the calculator above to see the exact bulb type for each position (low beam, high beam, fog, turn signal, brake, reverse, interior, and license plate). You can also check your owner's manual or the existing bulb stamping. Most modern vehicles use H11 (low beam) and 9005/HB3 (high beam).

  • H11 is the most common low beam bulb — used in Toyota, Honda, Ford, Chevy, and more
  • 9005 (HB3) is the most common high beam — fits the same vehicles
  • H7 is standard for European vehicles (BMW, Mercedes, VW, Audi)
  • Check the stamping on your current bulb if in doubt — it is printed on the base
  • The owner’s manual lists every bulb size in the maintenance section
PositionMost Common USMost Common EuroSocket Type
Low BeamH11H7Single filament
High Beam9005/HB3H7Single filament
Fog LightH11 / H8H8 / H11Single filament
Turn Signal7440 / 3157PY24WSingle filament
Q

Are LED headlight bulbs legal?

LED headlight bulbs exist in a legal gray area. In the US, FMVSS 108 requires headlight assemblies (not bulbs) to be DOT-compliant, but aftermarket LED bulbs in reflector housings can scatter light and blind oncoming drivers. Some states enforce this, others do not. LED bulbs in projector housings perform much better.

  • DOT approval covers the headlight assembly, not individual replacement bulbs
  • LED bulbs in reflector housings create scattered, unfocused beams that blind others
  • LED bulbs in projector housings produce a proper beam pattern similar to stock
  • Several states (California, New York, Texas) can ticket for non-compliant headlights
  • LED fog lights and interior/signal bulbs are generally accepted without issues
Q

What is the best color temperature for headlights?

The best color temperature for visibility is 4300K-5000K (natural to pure white), which closely matches daylight and provides the best contrast for the human eye. Factory HID and LED headlights typically use 4300K-5500K. Warmer (3000K) is better for fog, while cooler (6000K+) looks stylish but reduces visibility.

  • 4300K natural white: factory HID standard, excellent contrast and depth perception
  • 5000K pure white: most popular aftermarket choice, balanced brightness and clarity
  • 3000K warm yellow: best for fog lights — reduces glare in rain, fog, and snow
  • 6000K cool white: slightly reduced visibility vs 5000K but looks modern
  • 8000K ice blue: poor visibility for driving, purely cosmetic, often attracts police attention
Color TempAppearanceVisibilityBest Use
3000KWarm YellowGood in fogFog lights
4300KNatural WhiteExcellentAll-around driving
5000KPure WhiteVery GoodHeadlight upgrade
6000KCool WhiteGoodCosmetic preference
Q

How much brighter are LED headlights vs halogen?

LED headlights produce 2,000-4,000 lumens compared to halogen's 700-1,000 lumens for low beams — roughly 2-4 times brighter. HID (xenon) bulbs produce 3,000-5,000 lumens. However, raw lumens do not tell the whole story: beam pattern, focus, and color temperature all affect perceived brightness on the road.

  • Halogen low beam: 700–1,000 lumens at 55 watts
  • LED low beam: 2,000–4,000 lumens at 25–35 watts (2–4x brighter, 40% less power)
  • HID low beam: 3,000–5,000 lumens at 35 watts (best raw output)
  • LED lifespan: 30,000–50,000 hours vs halogen’s 500–1,000 hours
  • A well-aimed 3,000-lumen LED outperforms a misaligned 5,000-lumen HID in practice
Q

What does H11, 9005, H7 mean for headlight bulbs?

These are standardized bulb designations that define the physical socket shape, pin configuration, and base wattage. H11, H8, and H9 share the same socket (L-shaped with two tabs) but differ in wattage. 9005 (also called HB3) has a different locking tab pattern. H7 has a flat two-pin base common in European cars.

  • H11 = H8 = H9: same socket family, 55W/35W/65W respectively (interchangeable physically)
  • 9005 = HB3: high beam standard; 9006 = HB4 for low beam in older vehicles
  • H7: flat two-pin base, unique socket — not compatible with H11 or 9005 family
  • 9145 = H10: common fog light socket, also cross-compatible
  • 5202 = PS24W = 2504: GM and Chrysler fog light standard
Q

How long do LED headlight bulbs last compared to halogen?

LED headlights last 30,000-50,000 hours compared to 500-1,000 hours for halogen — roughly 30-50 times longer. At 2 hours of driving per day, a halogen bulb lasts about 8-16 months while an LED lasts over 40 years. HID bulbs fall in between at 2,000-3,000 hours (about 3-4 years).

  • Halogen: 500–1,000 hours = 8–16 months at 2 hrs/day driving
  • LED: 30,000–50,000 hours = 40+ years at 2 hrs/day (outlasts the vehicle)
  • HID: 2,000–3,000 hours = 2.5–4 years at 2 hrs/day
  • LED cost per hour: $0.001 vs halogen’s $0.02 (20x cheaper per hour of light)
  • LED failure mode: gradual dimming over years, not sudden burnout like halogen

Example Calculations

1Toyota Camry LED Upgrade

Inputs

VehicleToyota Camry (2018-2024)
TechnologyLED Upgrade
Color Temp5000K Pure White

Result

Low Beam BulbH11

Low beam: H11 (also fits H8, H9, H16). High beam: 9005 (HB3). Fog: H16. LED upgrade provides 2,000–4,000 lumens vs stock 700–1,000, a 253% improvement at 30W vs 55W, with 30,000–50,000 hour lifespan.

2BMW 3 Series HID Check

Inputs

VehicleBMW 3 Series (2016-2024)
TechnologyHID Conversion
Color Temp4300K Natural White

Result

Low Beam BulbH7

Low beam: H7 (unique socket, no cross-compatibility). High beam: H7. Fog: H8 (compatible with H11, H9). HID provides 3,000–5,000 lumens at 35W. Note: H7 requires specific HID kits due to unique base design.

3Ford F-150 Stock Replacement

Inputs

VehicleFord F-150 (2015-2024)
TechnologyStock Halogen
Color Temp3000K Warm Yellow

Result

Low Beam BulbH11

Low beam: H11 (compatible with H8, H9). High beam: 9005 (HB3). Fog: H11. Turn/brake: 3157 dual-filament. Stock halogen delivers 700–1,000 lumens at 55W with 500–1,000 hour lifespan.

Formulas Used

Brightness Improvement

Improvement % = ((New Lumens - Stock Lumens) / Stock Lumens) × 100

Calculate the percentage increase in light output from an upgrade

Where:

New Lumens= Average lumens of the upgrade bulb (LED or HID)
Stock Lumens= Average lumens of the stock halogen bulb (typically 850)

Bulb Lifespan in Driving Years

Years = Rated Hours / (Daily Driving Hours × 365)

Estimate how many years a bulb will last based on your driving habits

Where:

Rated Hours= Manufacturer lifespan rating in hours
Daily Driving Hours= Average hours of headlight use per day (typically 1–3)

Complete Guide to Finding and Upgrading Your Headlight Bulbs

Finding the right headlight bulb for your vehicle should not require a trip to the auto parts store. This calculator lets you look up the exact bulb type for every light position on your car, from low beams and high beams to fog lights, turn signals, and interior dome lights. With data for over 60 popular vehicles from 15 brands, you can quickly identify your bulb sizes and explore upgrade options in halogen, LED, and HID technologies.

The headlight bulb market has evolved significantly in recent years. While halogen bulbs remain the factory standard in most vehicles, LED upgrade bulbs now offer 2-4 times the brightness at lower wattage and dramatically longer lifespans. Understanding bulb designations like H11, 9005, and H7 is essential for finding compatible replacements. Many bulb types are cross-compatible: for example, H11, H8, and H9 all share the same physical socket despite different rated wattages, making them interchangeable.

When upgrading headlights, color temperature and housing type matter as much as raw lumens. The 4300K-5000K range provides the best nighttime visibility, closely matching natural daylight. LED and HID bulbs work best in projector-style housings that focus the beam properly. In reflector housings, they can scatter light in unpredictable patterns that reduce your visibility and blind oncoming traffic. Always check your local regulations before installing aftermarket headlight bulbs, and aim your headlights after any bulb change.

Related Calculators

Car Depreciation Calculator

Track vehicle value over time

Oil Change Calculator

Track oil change schedules and costs

Brake Pad Calculator

Estimate brake pad life and replacement cost

Gas Mileage Calculator

Calculate fuel efficiency and trip costs

Windshield Wiper Size Calculator \u2014 Find Your Exact Fit

Find the correct wiper blade sizes for your car by make and model. Compare beam, hybrid, and conventional blades with cost estimates and replacement tips.

Bolt Pattern Calculator \u2014 Wheel Lug Pattern & PCD Lookup

Bolt pattern calculator finds your wheel PCD from lug count and spacing. Check fitment compatibility, cross-reference vehicles, and convert inch to mm.

Related Resources

Car Payment Calculator: How to Calculate Monthly Auto Loan Payments

Read our guide

EV vs Gas Car Cost Calculator: Electric vs Gasoline Comparison

Read our guide

Gas Mileage Calculator: How to Calculate MPG and Fuel Economy

Read our guide

Car Depreciation Calculator

Calculate your vehicle's depreciation over time

Oil Change Calculator

Track oil change intervals and costs

Brake Pad Calculator

Estimate brake pad wear and replacement

Gas Mileage Calculator

Calculate fuel efficiency and costs

More Auto Calculators

See all vehicle and automotive tools

View All

Last Updated: Mar 9, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

UseCalcPro
FinanceHealthMath

© 2026 UseCalcPro