How many sets of lights for a 6 foot tree


The Omni Calculator computes how many lights to put on Christmas trees.

How many lights should go on a Christmas tree?

This question gets asked so often during the holidays that everyone from retailers like Lowe’s to publications like Real Simple and Better Homes & Gardens have tried to answer it.

“A good rule of thumb is 100 lights for every foot-and-a-half of tree,” according to Lowe’s. But Better Homes & Gardens recommends using three 100-light sets for every foot of a tree’s height. And Real Simple suggests 100 lights for every foot.

Since there’s no consensus about just how many lights is right, trimming a tree can be daunting for novice decorators. It’s even given headaches to mathematicians like Troy Henderson, a professor at the University of Mobile’s College of Arts and Sciences in Alabama. Last year, he developed what he describes as a hack to perfectly light a Christmas tree. By thinking of a holiday evergreen as an inverted cone, Henderson used the mathematical concept known as the conical helix to determine the right number of lights for his tree. He explained:

“Our Christmas tree is 3½ feet wide at its base and 8 feet tall. When using 75 feet of lights, the vertical spacing between rotations is about 7 inches. This ensures that if we begin wrapping the lights in a conical helix pattern beginning at the bottom of the tree and vertically space the lights by about 7 inches between successive rotations, the strands of lights will terminate precisely at the top of the tree.”

Henderson has made his Christmas tree light-spacing formula available to the public, and Dominik Czernia and Álvaro Díez, physics doctoral candidates studying in Poland and Turkey, respectively, have expanded on the mathematician’s work. They feature their approach on a web tool called the Omni Calculator. The free calculator factors in tree lights and ornaments and provides users with step-by-step computation and visualization. To use it, you’ll need to know some basic information, such as your tree’s height and bottom diameter, the length and spacing of the light strands, and the diameter of the ornaments you plan to use.

So who’s most likely to use a Christmas tree calculator? Is it designed for the math-and-science crowd or for anyone who wants a perfectly decorated tree? I interviewed Czernia and Omni Calculator Project founder Mateusz Mucha about the tool.

The Omni Calculator can help you figure out how many lights your Christmas tree needs.Omni Calculator
Nadra Nittle

Who knew that decorating a Christmas tree even stumps physicists? What prompted you all to develop a web tool that could simplify this process for everyone?

Dominik Czernia

We had been wondering how many lights and ornaments make a Christmas tree so beautiful. To our surprise, it was impossible for us to make at least some rough estimations. With the help of Dr. Henderson’s formula, we developed our intuitive tool with visualization of your perfect tree with lights and baubles. The best thing about it is the simplicity — all you need to enter are your tree’s dimensions.

Nadra Nittle

The conical helix is the key to the calculator. Can you describe how this pattern works in more detail?

Dominik Czernia

We surely can all agree that when we look at the Christmas tree, its shape reminds us of a cone, a pyramid with a circular base. So what does the conical helix have in common with a cone? Imagine you’ve got a ribbon that you attach to the top of a cone. Then start wrapping it around the cone, moving downwards until you reach the base. The curve formed by the ribbon is a conical helix.

Nadra Nittle

Using the conical helix pattern, it’s helpful to look at a Christmas tree from the top while decorating it. Why is that?

Dominik Czernia

One of the aesthetic factors that please most people is uniformity. The best way to check it is to look at a Christmas tree from the top so you can see every single ornament on it. Do they look uniformly distributed from that point of view? Perfect! That’s what we’re aiming for. This is another unique feature of a conical helix; it gives us excellent uniformity.

Nadra Nittle

An efficiently decorated tree might even help cut down on electricity costs. That’s amazing.

Dominik Czernia

It surely could help. The larger number of lights naturally translates into higher power consumption. However, we don’t want to resign from the lights entirely; they’re one of those things which bring a magical Christmas atmosphere. What we can do, though, is plan in advance how bright our Christmas tree should be to buy light strands of appropriate length.

This allows us to avoid the situation in which the light strand is too long, and we hide it somewhere in the tree foliage or leave it trailing on the floor. But still, these redundant lights will use electricity and generate costs! A well-decorated tree has uniformly distributed lights around; thus, it looks as pretty as we wanted, and simultaneously, the length of strands is perfectly adjusted to the Christmas tree’s dimensions.

Nadra Nittle

Who’s the target audience for the Omni Calculator? Is it mostly math-and-science types, or have normies expressed interest?

Mateusz Mucha

Omni Calculator is used both by geeks and people who aren’t as confident with math, but it’s actually the latter group we think about the most. People have thousands of decisions to make that they should base on numbers. But they don’t think in terms of math formulas, don’t have the time, or just don’t feel like making this effort. And they end up making bad decisions. It’s our goal to make this process easy, fast, and kind of fun so that people are more likely to do the math.

Nadra Nittle

On the Omni Calculator site, there’s a funny gif of Monica from Friends. She turns a Christmas tree around to show off her expertly decorated side of the tree and to hide the very messy side her friends decorated. Do you think Monica would use your calculator?

Mateusz Mucha

Sure, but it’s actually Joey and Rachel who could get the most value out of it. Chandler suffers through Excel every day, so he’d be capable. Ross would somehow make the tree about dinosaurs, and Phoebe would try to save the tree and homeless squirrels instead.

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How Many Lights Do I Need for My Christmas Tree?

Posted December 4, 2021

Whether you’ve got a real or an artificial Christmas tree, every tree needs Christmas lights to make it look truly festive. However, getting the right amount of lights can be tricky. Follow our guide to make sure you achieve the look you want.

How Many Lights Do I Need?

For a basic look our number one rule is at least 100 bulbs per 1ft of tree – so that would mean a 6ft tree needs a minimum of 600 LEDs. For a fuller look, you can add as many lights as you want but we recommend upwards of 700 for a 6ft tree.

Shop All Christmas Lights

What About Different Styles?

The different styles of lights will impact the number of bulbs you need for your tree as each light style has a different placement and you can achieve different looks with them.

String lights are a classic light otherwise known as fairy lights and are what most people think of first when it comes to decorating the tree. String lights are the most spread out light style which look fantastic for a twinkling understated look but if you want to achieve a fuller look, you may need to add more lights. Our recommendations below will help you make the right choice whatever your preference on style.

Recommended numbers:
6ft Trees = 600 LEDs
7ft Trees = 800 LEDS
8ft Trees = 1000 LEDS
9-10ft Trees = 1200 LEDS

2. Compact Cluster Lights

Otherwise known as Christmas Tree Lights these compact cluster lights are designed to give your tree a really full and bright look as they offer many more lights per metre when compared to classic string lights. There is 2.5cm spacing between bulbs and they are specifically designed for Christmas trees, making them the ideal choice. We recommend the following numbers to achieve the desired full look.

Recommended numbers:
6ft Trees = 750 LEDs
7ft Trees = 1000 LEDS
8ft Trees = 1500 LEDS
9-10ft Trees = 2000 LEDS

3. Cluster Lights

Cluster Lights have 4 x as many lights per metre than string lights, and only 1.5cm spacing between bulbs versus string lights 5cm spacing and therefore are already designed to offer a full look. We recommend the following numbers to achieve a well-lit glow for your Christmas tree.

Recommended numbers:
6ft Trees = 480 LEDs
7ft Trees = 720 LEDS
8ft Trees = 960 LEDS
9-10ft Trees = 1500 LEDS

4. Pin Wire Lights

Pin wire lights are becoming increasingly popular and it's no surprise why! These stunning LED Christmas lights sit on a very discreet wire which blend in perfectly with your tree and appear almost invisible. The bulbs are a different shape from other Christmas lights and give a more rounded glow.

Recommended numbers for Pin Wire Compact Clusters:
6ft Trees = 750 LEDs
7ft Trees = 1000 LEDS
8ft Trees = 1500 LEDS
9-10ft Trees = 2000 LEDS

What About Different Colours?

Whilst colour shouldn't impact the number of lights you need, sometimes brighter lights can have a harsher appearance and you may require less. Therefore, if you want a really bright cool white tree or a multicoloured tree, you probably want to go for a string light so that the lights are more spread out and not overwhelming.

For subtler colours like warm white and copper glow, you are better off going for compact clusters or cluster lights as the fuller appearance will really complement these colours.

Best Selling Christmas Lights

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Written By

Megan Humble

Last update December 8, 2021

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Megan Humble
Last update December 8, 2021

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How many lights do I need for a two meter tree?

"A good rule of thumb is 100 bulbs for every foot and a half of tree," according to Lowe. But Better Homes & Gardens recommends using three sets of 100 bulbs for every foot of tree height. Real Simple suggests 100 bulbs per foot.

Which is the most realistic pre-lit tree?0005 has a realistic look, pre-stretched headlights and a reusable storage box.

How long do pre-lit LED trees last? Diodes in LED lights have an impressively long lifespan. This is why LED manufacturers typically claim a to 75,000 hour lifespan for their bulbs.

Besides, what is the most natural artificial Christmas tree?

1. Noble Fir . The Terrain design team modeled this cutie after a real forest tree, so you know it will look more natural than any other fake Christmas tree.

How many lamps do I need for a 7-foot tree?

We recommend that you use approximately 30 bulbs per foot of your Christmas tree. For example, at a height of 4 feet. The Christmas tree should have 120 garlands, 5 feet. tree 150 lights, 6' tree 180 lights and 7' tree Lighting 210 .

How many lights do I need to cover a 7 foot tree? How many lights do I need for a 7 foot tree? We recommend 15 meters of lights for a 6-foot Christmas tree, but if you have room for a large tree, just add 5 meters of lights for every extra foot of height. So for a 7 foot tree we suggest using 20 meters of light .

Do you start at the top or bottom when you put lights on your Christmas tree? Turn on the lights to make sure all the bulbs are working. Starting at the top of the tree, weave the lights above and below the branches. Get down and around the tree, also hang lanterns behind. When you reach the bottom, hide the extra lights behind a tree.

How many C6 LEDs for wood? Some strands with the same number of bulbs may have 6" spacing, while others may have 12" spacing, meaning one set will be twice as long as the other.
...
Lamp type and interval.

Tree height Lamp shapes 5 mm, G12, M5 or C6 Lamp shapes C7 or C9
10′ - 11′ Full 700 – 1050 425 – 550
12′ - 14′ Slim 630 – 770 450 – 600

• December 8th. 2014

How many decorations do I need for a 7ft Christmas tree?

Tip of the day: how many decorations for the Christmas tree?

Tree height Number of decorations
7' 70 decorations
8' 80 decorations
9' 90 jewelry
10' 120 - 160 ornaments

• November 2, 2011

How many C6 bulbs do I need for a 7-foot tree? Lamp type and spacing

Tree height Lamp shapes 5 mm, G12, M5 or C6 Lamp shapes C7 or C9
4′ - 5′ Full 280 – 420 150 - 225
6′ - 7′ Slim 210 – 350 150 – 225
6′ - 7′ Full 420 – 630 225 – 325
8′ - 9′ Slim 350 – 490 225 – 325

• December 8th. 2014

How many decorations do I need for a 7ft Christmas tree?

A 6ft Christmas tree will need at least 128 pieces, a 7ft Christmas tree will need at least 196 decorations, and an 8ft Christmas tree will need at least 212.

Do you light the lights on the tree first? Start with lights first

The first, most important thing to do when decorating a Christmas tree is always add lights first - this is harder to do after you've added decorations such as baubles and garlands.

Should the lights on the tree be lit first?

The first, most important thing to do when decorating a Christmas tree is always add light first - it's harder to do after you've added decorations such as baubles and garlands.

Do you have too many lights on your tree?

But you don't want to overdo it. A tree too cluttered with lights will be domineering. , and a tree without enough light will appear sparse.

How to light Christmas tree lights like a pro? Instead of wrapping garlands around the tree from top to bottom, hang them vertically. Mentally divide the tree into three triangular sections. String lights by starting a thread at the bottom of a tree and pulling it up and then back down like a mountain.

How many feet of light do you need for a 6 foot tree? For example: for a standard 6ft tree you are looking at 600 mini fixtures while an 8ft Alaskan fir might require 1,000 mini fixtures. And for those of you with a 20 foot tree, be prepared to use 2,000 mini lights.

Which LED Christmas tree lights?

Warm white LEDs emit a soft glow comparable to conventional lighting and are a good choice for lighting indoor Christmas trees. And cool white LED bulbs can be used to achieve a whiter tone and are often used outdoors.

How many large ornaments do I need for a 7.5 foot tree? HOW MANY ORNAMENTS DO I NEED?

Tree height Light cover Heavy coating
6.5 feet 70 pieces 105 pieces
7. 5 feet 105 pieces 140 pieces
9-10 feet 175 pieces 210 pieces

What collar size do I need for a 7.5 foot tall tree?

See also

The hexagonal shape adds drama to a simple design. The 25" diameter will make it a good bet for trees 7.5 feet tall or less. The collar is made of iron, and since it has snowflake cutouts, you can place garlands behind it for an extra cozy holiday glow.

What size is the 70 mm decoration? UNIVERSAL SIZE - Ornament size 70 mm/ 2.76 inches in diameter .

What does C6 mean in Christmas lights?

C6 Lights (C stands for Cone Size ) are typically ¾" in diameter and 1 ⅛" high. They have light bulbs designed to light up Christmas trees or small items in your yard. They can be used for perimeter lighting if placed strategically and tightly, but they don't end up burning as brightly as the larger options.

How many C7 bulbs do you need for a Christmas tree? Worn 100 mini lights or 50 traditional C7 lights per vertical foot on thick trees . Use half this amount for thinner trees. For example, for a full 9ft tree you would need 450 C7 lights, and for a thin 6ft tree you would need 300 mini lights. For live trees and shrubs, use 100 mini lights or 50 C7 lights per vertical foot.

How many feet of garland do I need for a 7.5 foot tree? Step 4: Garland

The rule of thumb is that there are at least nine (9) feet of garland for every foot of tree, so a 7-foot Christmas tree would require sixty-three (63) feet of garland. We recommend buying more garlands to be on the safe side. If you have leftovers, you can always use them on your mantle or wreaths.

What goes first on the tree?

Lights come on first on a tree , before decorations, tree tops or anything else. Plug them in and let them burn before you start putting them on the tree. Most shops now sell special lightweight test guns, usually priced around $20.

How do you make an inexpensive tree look expensive?

Do you put on tinsel before the light? Step six: go to the city of tinsel

If you are using tinsel, it's time to hang it on the tree. always in front of your decorations and ornaments to avoid tinsel snagging. A simple and easy way to add color to your tree, tinsel is best used sparingly - you don't need to overload the tree with it.

What size bulb is c6?

What size bulb is c6? C6 bulbs are the smallest of the strawberry-shaped light bulbs, which many consider to be the shape of the "traditional Christmas light bulb". The bulbs are usually 3/4" in diameter and 1 1/8" high.

What is the size of the C6 bulb? C6 lamps are slightly larger and more commonly used than C3 lamps. C6 bulbs, 3/4" in diameter and 1-1/8" tall, are great for growing shrubs and trees both indoors and outdoors.

What does C6 mean on a light bulb? C6 lights (C stands for cone size) are typically ¾" round and 1 ⅛" high. They have light bulbs designed to light up Christmas trees or small items in your yard. They can be used for perimeter lighting if placed strategically and tightly, but they don't end up burning as brightly as the larger options.

Are C5 and C6 bulbs interchangeable? The C5 flashlights use the same faceted lamp cap or lens as the C6, but the C5 lamp cap is placed over a smaller wide-angle lens, so the C5 does a good job of evenly dispersing directional LED light, which is a problem for many C-style LED lamps.

What is the difference between C6 and C7 bulbs?

C6 bulbs are the smallest of the strawberry-shaped light bulbs, which many consider to be the shape of the "traditional Christmas light bulb". The bulbs are usually 3/4" in diameter and 1 1/8" high. The C7 lights have the same strawberry shape as the C6, but are slightly larger. They measure 1 inch in diameter and 1 1/2 inches high.

Are the C6 headlights good?

But C6 can also be very effective when used correctly. Lamps on C6 stringers are usually much closer together than lamps on C7 or C9 light lines.. And this closer distance can result in dramatic, crisp, and distinctive lines for your perimeter display. C6 LED bulbs will also consume less power.

Can the C6 light be used on the house?

Yes, bulbs are much smaller than the more popular C9 lights that many people use to create perimeter objects, but as long as the correct clamp is used, a closer spacing on a set of C6 stringers will create very crisp, crisp lines along the perimeter of a home or business.

Are C9 bulbs larger than C7?

C7 bulbs are smaller than C9. They have an E12 candelabra base, the same size as a night light. They are about 1 1/2 inches long and typically use 5 watt incandescent bulbs. C9 bulbs are larger, over 2 inches long and fit in an E17 base.

Which is brighter C7 or C9?

And here is the C9 bulb. You can tell just by looking that it is the larger of the two. At 7W it's much brighter and we also offer it in a pure 10W version. So, to answer your question, first of all it's the size and wattage that makes C7 and C9 Christmas light bulbs different..

What is the difference between C7 and C9 headlights?

C7 and C9 bulbs are the most popular Christmas lights. C7 lamps have an E12 Candelabra base and C9 lamps have an E17 Intermediate base. Each lamp base must be connected to a socket of the appropriate size. This larger socket size is popular for use with indoor lighting and larger special light bulbs.

Do you have bulb C5?

Typical bulbs: C7, C9 and C6 with C5 and C3 to a lesser extent.

What is a type A lamp?

"E" refers to "Edison", which is the type of basic "screw-in" style that people in the United States are most familiar with. 26 refers to 26mm across. (This is also called the "medium" base.) So the bulb that most of us used in our homes here in the States is the A19 bulb with the E26 base.

How many C7 bulbs do I need for a 7ft tree?

Example: Tree 7 feet high, 45 inches in diameter 7 x 45 (divided by 2) = 157 lights Safety Tips: Do not butt flashlights to C7 or C9 lights.

How many C7 bulbs can be tied together?

Our maximum recommended number of traditional C7 and C9 incandescent bulbs is 200 bulbs per style, especially if your bulbs are spaced 12 inches apart. (The wattage of our bulbs is listed in their data sheet.)

Are C7 and E12 bulbs the same?

The industry uses many terms for the same size: C7 / E12 / Candelabra base lamps, commonly used for chandelier type fixtures and decorative lighting. Medium/E26 (E27 in Europe) bulbs are the same size as a standard household light bulb.

How do I know what size bulb I need?

Flask size is very simple and straightforward, based on the diameter of the bulb at its widest point, measured in eighths of an inch (⅛ inch). For example, the designation "T12" indicates a tubular flask with a diameter of 12 eighths of an inch (12/8 inch) (or 1 ½ inch).

What is the standard bulb size?

Bulb base types

E26 base is the most common. This is what most screw-in home light bulbs have, regardless of what technology (incandescent, LED, fluorescent, etc.) they are made of. 26 simply means how many millimeters wide the base, which converts to just over an inch.

What is M5 light?

If you've been a Christmas enthusiast for a few years, you're probably familiar with the long-time popular mini incandescent bulbs. The M5 light kits have a lens that is almost identical to those old but very popular back-up lights and also provides bright and smooth lighting.

How many watts is the bulb C9?

A string of 25 C9 incandescent bulbs—large, puffy bulbs often used outdoors—uses 175 watts of electricity, costing a whopping $15.12 per season (assuming 12 hours per day for 45 days).

How many LED strands can be connected?

1440/100= 14.4. Therefore, your circuit can only handle 14 incandescent strings connected together. On the other hand, if an average LED string consumes 10 watts, then 1440/10 = 144. This means you can string 144 strings together if they are LED!

What sizes are the Christmas lights?

Christmas light bulbs are available in two standard sizes: C7 and C9. In addition to standard sizes, there are also round lamps (G20, G30, G45, G80), mini string lights and patio lights in various shapes and sizes.

How many lumens do Christmas lights have?

Step lights: 12-100 lumens. Hardscape lights (on walls): 50-185 lumens. Landscape lighting: 50-300 lumens. Road lighting: 100-200 lumens.

Are the C7 bulbs hot?

Old incandescent light bulbs become hot, making them a fire hazard when used on or near flammable or fragile holiday decorations. However, C7 and C9 LED bulbsdo not get hot to the touch, which expands the creative horizons of their use - anywhere .


Learn more