The short answer
Take your ceiling height, subtract the stand, the topper and a few inches, and round down. Under an 8 ft ceiling that is a 6½ ft tree — 7 ft if you don’t put a star on top. The calculator does the sum, then tells you what a tree that height costs at real farms this season, how many lights it takes and how much water the stand has to hold.
Christmas tree size calculator
Tree height by ceiling height
With a 5-inch stand and 3 inches to spare, with and without an 8-inch topper. The price is the range for the tree with a topper, at the farms with a 2026 list or rate for that exact height.
| Ceiling | With topper | No topper | 2026 price | Lights |
|---|---|---|---|---|
| 7 ft | 5½ ft | 6 ft | $55–$174 (11 farms) | 550 |
| 7 ft 6 in | 6 ft | 6½ ft | $60–$174 (12 farms) | 600 |
| 8 ft | 6½ ft | 7 ft | $65–$174 (12 farms) | 650 |
| 8 ft 6 in | 7 ft | 7½ ft | $70–$174 (12 farms) | 700 |
| 9 ft | 7½ ft | 8 ft | $75–$184 (12 farms) | 750 |
| 10 ft | 8½ ft | 9 ft | $85–$204 (12 farms) | 850 |
| 12 ft | 10½ ft | 11 ft | $126–$269 (9 farms) | 1,050 |
How the calculator works
- Height. Ceiling, minus the stand, minus the topper, minus the gap you ask for, rounded down to the half-foot. Farms sell by the foot or the half-foot, and a tree that is an inch too tall is a tree you have to take back out of the stand to cut.
- Price. Only farms on this site with a full 2026 price list or a 2026 rate per foot (per-foot farms from 5 ft up), the same figures as what a tree costs. Where a farm prices by the foot, we multiply it out; where it prices in one-foot bands, a 6½ ft tree is in the 6–7 ft band. Farms that charge one price for any tree are left out of the list because the height makes no difference there.
- Lights. 100 mini lights for each foot of tree is the usual decorators’ rule; 70 gives a softer look and 150 a full one.
- Water. A quart per inch of trunk width, the rule from the Washington State and Oregon State extension services, and never less than a gallon, which is Penn State Extension’s floor for most trees. If you leave the trunk blank we guess 3 inches under 5 ft, 4 inches up to 8 ft, 5 up to 10 ft and 6 above. Measure the real thing at the farm; trunks vary a lot with species.
Tree size questions
What size Christmas tree for an 8 foot ceiling?
A 6½ ft tree, with a 5-inch stand, an 8-inch star and 3 inches to spare. Without a topper you can go to 7 ft. Measure at the spot the tree will stand: a ceiling light or fan above it is the real limit, not the ceiling.
What size Christmas tree for a 9 foot ceiling?
A 7½ ft tree with a stand and a topper, or 8 ft without the topper. With a 10 ft ceiling, 8½ ft.
How do I make sure the tree I cut will fit?
Take the height with you. Three Houston-area farms on this site, Old Time, Family Roots and Double Creek, lend you a measuring stick with the saw; anywhere else, cut a broom handle or a length of pipe to the height the calculator gives and hold it against the tree. Trees look smaller standing in a field than in a living room, which is why nearly everyone who gets it wrong cuts one too tall.
How many lights do I need for a 7 foot Christmas tree?
About 700 mini lights for a standard look, which is 100 for every foot of tree. Roughly 500 gives a softer glow and 1,050 a full one. On a real tree, wind them along the branches from the trunk outwards rather than round the outside, so the inside of the tree is lit too.
How much water does a Christmas tree stand need to hold?
A quart for every inch across the trunk, and never less than a gallon. A 6 to 7 ft tree usually has a trunk about 4 inches wide, so a gallon stand; a 6-inch trunk needs a gallon and a half. A fresh-cut tree can drink that much every day for the first week, so check it each morning.
Does the fresh cut at home make the tree shorter?
Not by much. Oregon State University’s Christmas tree specialist says a quarter-inch slice off the base is plenty for the tree to take up water. Some stands need a few inches of bare trunk below the lowest branches; most farms will trim those off for you when they shake and bale the tree.
What does a 6 or 7 foot Christmas tree cost at a farm?
This season, about $72 to $100 for 6 ft at most farms that publish a list, and $85 to $120 for 7 ft. The calculator shows the price for your height farm by farm, and what a tree costs has every list.
Where the rules come from
The water rule is from Washington State University (Gary Chastagner) and Oregon State University Extension (Chal Landgren), with Penn State Extension’s one-gallon minimum; the light count is the common decorators’ rule of 100 per foot. The prices are the farms’ own 2026 figures, each on that farm’s card on this site with the date we read it. Nothing here is sponsored by a light or stand maker.
Also on pickinghours
- Christmas card photoslight, outfits, farm rules
- Tree size calculatoryou are here
- What a tree costsreal farm price lists
- When farms openevery 2026 date
- Getting it hometying it to the car
- How long a tree lastswhat to do the moment you get in
- Types of treewhich ones you can cut, where
- North CarolinaFraser fir country
- Pennsylvaniaeleven species to cut
- Texaspine and cypress, five metros
- New JerseyNorth, Central and South Jersey
- WashingtonSeattle to Spokane
- OregonPortland, Salem, Eugene
- MichiganGrand Rapids to Ann Arbor
- VirginiaNorthern Virginia and Richmond