LogmaOf the pies on a US Thanksgiving table, pumpkin is the lightest at about 320 calories a slice and pecan is the heaviest at around 480. Apple and sweet potato pie land in between, close to 400. Those are plain slices, before the whipped cream or the scoop of ice cream, which is where the real jump happens.
So if you want dessert and you're watching the day's calories, the pie you pick matters less than the size you cut and what you pile on top. Here's every common holiday pie ranked, what the toppings add, and how to log a slice without turning dessert into homework.
Quick note on who's writing: I'm Batu, I build Logma, a voice calorie tracker for iPhone, and I'm losing my last few kilos in public, holidays included. Every number below comes from a source you can check at the bottom.
The Thanksgiving pie ranking, lightest to heaviest
Here are the four pies you'll see most on a US holiday table, cut into a standard slice, one eighth of a 9 inch pie, and served plain. No cream, no scoop, just the pie.
| Pie | Standard slice | Approx. calories |
|---|---|---|
| Pumpkin pie | about 130 g | ~320 kcal |
| Sweet potato pie | about 150 g | ~400 kcal |
| Apple pie | about 125 g | ~410 kcal |
| Pecan pie | about 115 g | ~480 kcal |
Pumpkin wins by a clear margin, mostly because the filling is largely pumpkin and spiced custard, which is low in calories for its size. Pecan sits at the other end: its filling is basically set caramel, sugar and corn syrup around the nuts, so even a thin slice is dense. Apple and sweet potato land close together in the middle.
If you only remember one thing, remember this: of the usual pies, pumpkin is the one to reach for if you want dessert without spending much of your day on it, and pecan is the one to cut small.
Why the same pie can swing 150 calories
The pie you pick is only half the story. How it's cut and what's baked into it moves the number more than most people expect.
- Slice size. Cut a 9 inch pie into six and you get a 155 g wedge. Cut it into ten and you get a 90 g sliver. That's the same pumpkin pie at roughly 380 calories or 220 calories, just from where the knife went.
- The crust. A pastry crust is mostly flour and butter, so it carries most of the fat. Leaving half the crust on the plate trims about 100 calories a slice.
- The filling. A custard made with sweetened condensed milk runs richer than one made with evaporated milk, and a pecan pie heavy on corn syrup is heavier than one that isn't.
- Store bought vs big box. A Costco pumpkin pie is a 12 inch pie, not a 9 inch, so a slice off one is bigger than the math above. Same with a generous restaurant slice, which can run 40 percent larger than the standard eighth.
This is why a single "calories in a slice of pie" number is always a little bit of a fib. The honest version is a range, and the slice in front of you is somewhere in it.
What the whipped cream and ice cream add
Toppings are where a reasonable slice quietly turns into a big one. Here's what the usual extras cost on top of the pie itself.
| On top | Adds |
|---|---|
| A spoon of whipped cream | ~50 to 80 kcal |
| A scoop of vanilla ice cream (a la mode) | ~140 kcal |
| A drizzle of caramel or maple | ~50 kcal |
So apple pie a la mode, a slice plus a scoop, lands near 550 calories. Pecan pie with ice cream is closer to 620. The scoop is the easiest thing to forget when you log, and it's often the single biggest add on the plate. If you're going to have it, have it on purpose.
A few real dessert plates, side by side
Here's how the numbers stack up the way people actually eat on the day.
| Dessert | Approx. calories |
|---|---|
| Thin sliver of pumpkin pie, plain | ~220 kcal |
| Pumpkin slice with whipped cream and a black coffee | ~375 kcal |
| Standard apple pie slice, plain | ~410 kcal |
| Apple pie a la mode | ~550 kcal |
| Pecan pie slice with vanilla ice cream | ~620 kcal |
None of these is a disaster on its own. The trouble is usually not the first slice, it's the second one you cut standing over the pie tin an hour later, plus the sliver "just to even it out." One plated slice you actually logged beats three you didn't.
What a photo of a pie slice can't tell you
Point a photo app at a slice of pie and it has to guess at the two things that move the number most: the size of the slice and what's hiding in it. A camera can't tell a custard made with cream from one made with evaporated milk, it can't see a scoop of ice cream already melting into the crust, and it reads a doorstop restaurant slice the same as a thin one.
Saying it out loud fixes that, because you know what you're eating.
"A slice of pecan pie with a scoop of vanilla ice cream and a black coffee."
That's one sentence. Logma counts the pie, the scoop and the coffee and logs the calories and macros in about 3 seconds, no label to read at the dessert table and no serving size to fiddle with. Say "a thin slice" or "a big slice" and it adjusts. If you'd rather not talk at the table, type the same sentence. There's more on why this beats snapping a photo in voice vs photo apps.
How to have the pie and still hit your week
You don't have to skip dessert to stay on track. A slice of pie is a few hundred calories, and a steady calorie deficit is measured over a week, not a single meal. One holiday is not going to undo a month of honest logging.
- Pick one pie and one slice, plated, instead of grazing the tin.
- Go pumpkin if you want the lightest, pecan if you want the richest and you're cutting it small.
- Decide on the ice cream before you sit down, not after.
- Log the slice the same day, not from memory on Monday. If you need a target to log against, the free calorie calculator gives you one in a minute.
And remember the pie lands on top of the meal. If you want the full dinner math first, I broke down the plate in how many calories are in a Thanksgiving dinner.
When a barcode beats talking
One honest exception. If your pie came from the freezer aisle or the grocery bakery with a nutrition label on the box, the fastest and most accurate thing you can do is scan the barcode. A store bought Marie Callender's or Sara Lee pie has its exact numbers printed right there, and a scanner in an app like MyFitnessPal or Cronometer reads them straight off.
Talking shines when there's no label: the pie your aunt baked, the restaurant slice, the sweet potato pie someone brought that isn't in any database. That's most of Thanksgiving, which is why I log the holiday by voice, but credit where it's due.
FAQ
Which Thanksgiving pie has the fewest calories?
Pumpkin pie, at about 320 calories for a standard slice. Of the common holiday pies it's the lightest, because the filling is mostly pumpkin and spiced custard. Pecan is the heaviest at around 480, with apple and sweet potato near 400.
How many calories are in a slice of pecan pie?
A standard slice, about an eighth of a 9 inch pie, is around 480 calories, mostly from the sugar and corn syrup in the filling. A large restaurant slice can reach 580, and with a scoop of ice cream you're near 620.
How many calories are in a slice of apple pie?
About 410 calories for a standard slice per USDA data for commercially prepared apple pie. A scoop of vanilla ice cream on top adds roughly 140, so apple pie a la mode lands near 550.
Does a scoop of ice cream really add that many calories?
Yes. A single scoop of vanilla ice cream is about 140 calories, often the biggest single add on a dessert plate. A spoon of whipped cream is lighter, around 50 to 80. Both are easy to forget when you log, so it's worth naming them.
Can I eat pie and still lose weight over the holidays?
Yes, if it fits your week. One slice is a few hundred calories, and a calorie deficit works across the week, not a single meal. Have one plated slice, decide on the ice cream on purpose, and log it the same day.
Sources: USDA FoodData Central (pie, pumpkin, commercially prepared) · FatSecret, USDA apple pie (1/8 of 9 inch piece) · NutritionValue (pecan pie per 100 g and per slice) · Inlivo (sweet potato pie nutrition) · National Geographic (healthier Thanksgiving: pie and calories). Numbers are approximate and can change; nothing here is medical advice.
