# Santa math check. **URL:** \ **Category:** Factual Questions\ **Created:** [December 24, 2008, 8:12pm UTC](https://boards.straightdope.com/t/santa-math-check/478587 "2008-12-24T20:12:53Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![Chefguy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chefguy/32/138_2.png) [@Chefguy](https://boards.straightdope.com/u/Chefguy)\ **Post date:** [December 24, 2008, 8:12pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/1 "2008-12-24T20:12:53Z")
I found these figures on some internet site and again in the paper this morning. Being dopers, I’m sure you’d like to check the accuracy of the math and perhaps add some figures of your own: 75 million — Approximate miles Santa must travel 650 miles per second — Approximate speed Santa must travel to serve each household with a Christian child 822.6 — Approximate number of homes Santa must visit each second on Christmas Eve 2,950.7 tons — Approximate weight Santa would gain if he consumed 1 cookie and an 8-ounce glass of milk at each home 321,000 tons— Estimated weight of Santa’s sleigh, assuming 2 pounds of toys per child 214,200— Reindeer Santa would need to pull that load (assuming aerial reindeer can pull 10 times a normal reindeer load) 17,500 — G forces inflicted on Santa as his sled accelerates to 650 miles per second 14.3 quintillion — Estimated energy, in joules, absorbed by the lead reindeer on Santa’s sleigh 0.0042 second — Estimated time it takes Santa and sleigh to vaporize from friction during acceleration My contribution: 1,285,200 feet (or 243.409 miles) - Length of 214,200 reindeer placed end to end, assuming a six foot average length per reindeer. ---
**Author:** ![Rhythmdvl](https://avatars.discourse-cdn.com/v4/letter/r/85f322/32.png) [@Rhythmdvl](https://boards.straightdope.com/u/Rhythmdvl)\ **Post date:** [December 24, 2008, 11:06pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/2 "2008-12-24T23:06:40Z")
> [@Chefguy](#): > > My contribution: > > 1,285,200 feet (or 243.409 miles) - Length of 214,200 reindeer placed end to end, assuming a six foot average length per reindeer. Wouldn’t it be half that? Every image I’ve seen of Santa’s sleigh has the reindeer hitched in a 2 x 2 fashion. ETA: you should check out Norad Santa, I think it has some more details. (Or it used to, I can’t find the comparisons or technical data up there this year.) ---
**Author:** ![Markxxx](https://avatars.discourse-cdn.com/v4/letter/m/5daacb/32.png) [@Markxxx](https://boards.straightdope.com/u/Markxxx)\ **Post date:** [December 24, 2008, 11:08pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/3 "2008-12-24T23:08:58Z")
> [@Chefguy](#): > > 650 miles per second — Approximate speed Santa must travel to serve each household with a Christian child Question for you, how do you determain this? I mean some households have more than one Child. ---
**Author:** ![amarone](https://avatars.discourse-cdn.com/v4/letter/a/e0b2c6/32.png) [@amarone](https://boards.straightdope.com/u/amarone)\ **Post date:** [December 24, 2008, 11:41pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/4 "2008-12-24T23:41:03Z")
> [@Chefguy](#): > > 2,950.7 tons — Approximate weight Santa would gain if he consumed 1 cookie and an 8-ounce glass of milk at each home When I was a child (in England) we used to leave a glass of sherry and a mince pie. Can you calculate Santa’s blood-alcohol level? ---
**Author:** ![NoCoolUserName](https://avatars.discourse-cdn.com/v4/letter/n/5fc32e/32.png) [@NoCoolUserName](https://boards.straightdope.com/u/NoCoolUserName)\ **Post date:** [December 25, 2008, 12:47am UTC](https://boards.straightdope.com/t/santa-math-check/478587/5 "2008-12-25T00:47:24Z")
And don’t forget the carrots left out for the Reindeer (and, this year, a dog biscuit for “Olive, the Other Reindeer” since we watched that last night)! The Reindeer will be gaining weight as they go, to make up for the toys left behind. ---
**Author:** ![Chefguy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chefguy/32/138_2.png) [@Chefguy](https://boards.straightdope.com/u/Chefguy)\ **Post date:** [December 25, 2008, 3:14am UTC](https://boards.straightdope.com/t/santa-math-check/478587/6 "2008-12-25T03:14:33Z")
I’m wondering what the roof loading would be like for that many reindeer plus the sleigh/toys weight. ---
**Author:** ![Rick](https://avatars.discourse-cdn.com/v4/letter/r/9f8e36/32.png) [@Rick](https://boards.straightdope.com/u/Rick)\ **Post date:** [December 25, 2008, 5:56am UTC](https://boards.straightdope.com/t/santa-math-check/478587/7 "2008-12-25T05:56:36Z")
> [@Chefguy](#): > > 214,200— Reindeer Santa would need to pull that load (assuming aerial reindeer can pull 10 times a normal reindeer load) > > 1,285,200 feet (or 243.409 miles) - Length of 214,200 reindeer placed end to end, assuming a six foot average length per reindeer. > [@Rhythmdvl](#): > > Wouldn’t it be half that? Every image I’ve seen of Santa’s sleigh has the reindeer hitched in a 2 x 2 fashion. > ETA: you should check out Norad Santa, I think it has some more details. (Or it used to, I can’t find the comparisons or technical data up there this year.) > [@Chefguy](#): > > I’m wondering what the roof loading would be like for that many reindeer plus the sleigh/toys weight. I’m sorry, but you are all wrong. Every true believer knows Santa’s sled is pulled by 8 tiny reindeer. ---
**Author:** ![AlsoNamedBort](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/alsonamedbort/32/3213_2.png) [@AlsoNamedBort](https://boards.straightdope.com/u/AlsoNamedBort)\ **Post date:** [December 25, 2008, 6:07am UTC](https://boards.straightdope.com/t/santa-math-check/478587/8 "2008-12-25T06:07:29Z")
> [@Chefguy](#): > > I’m wondering what the roof loading would be like for that many reindeer plus the sleigh/toys weight. But does he ever really land? I mean, they can fly. I’ve always assumed that since they don’t have wings, they must be able to hover. ---
**Author:** ![Suburban\_Plankton](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/suburban_plankton/32/219_2.png) [@Suburban\_Plankton](https://boards.straightdope.com/u/Suburban_Plankton)\ **Post date:** [December 25, 2008, 6:09am UTC](https://boards.straightdope.com/t/santa-math-check/478587/9 "2008-12-25T06:09:53Z")
Those are impressive numbers. Unfortunately, most of them are meaningless, given the fact that Santa does not actually visit every house in the world in a single night. He doesn’t have to, because [Santa Claus is a Time Lord.](http://www.enworld.org/forum/general-rpg-discussion/34826-ot-santa-claus-time-lord.html) ---
**Author:** ![aldiboronti](https://avatars.discourse-cdn.com/v4/letter/a/9fc348/32.png) [@aldiboronti](https://boards.straightdope.com/u/aldiboronti)\ **Post date:** [December 25, 2008, 10:01am UTC](https://boards.straightdope.com/t/santa-math-check/478587/10 "2008-12-25T10:01:28Z")
> [@amarone](#): > > When I was a child (in England) we used to leave a glass of sherry and a mince pie. Can you calculate Santa’s blood-alcohol level? And the fine/length of jail time Santa will receive when he’s arrested for driving under the influence. ---
**Author:** ![Wendell\_Wagner](https://avatars.discourse-cdn.com/v4/letter/w/8491ac/32.png) [@Wendell\_Wagner](https://boards.straightdope.com/u/Wendell_Wagner)\ **Post date:** [December 25, 2008, 2:53pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/11 "2008-12-25T14:53:59Z")
Year that I first read this - 1990 Number of websites where this appears - 362,000 ---
**Author:** ![Chefguy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chefguy/32/138_2.png) [@Chefguy](https://boards.straightdope.com/u/Chefguy)\ **Post date:** [December 25, 2008, 6:43pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/12 "2008-12-25T18:43:15Z")
> [@Wendell\_Wagner](#): > > Year that I first read this - 1990 > > Number of websites where this appears - 362,000 Threadkiller - 1 ---
**Author:** ![Wendell\_Wagner](https://avatars.discourse-cdn.com/v4/letter/w/8491ac/32.png) [@Wendell\_Wagner](https://boards.straightdope.com/u/Wendell_Wagner)\ **Post date:** [December 25, 2008, 7:03pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/13 "2008-12-25T19:03:23Z")
You’re welcome. ---
**Author:** ![Horseflesh](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/horseflesh/32/7502_2.png) [@Horseflesh](https://boards.straightdope.com/u/Horseflesh)\ **Post date:** [December 25, 2008, 7:23pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/14 "2008-12-25T19:23:37Z")
> [@Chefguy](#): > > 75 million — Approximate miles Santa must travel For the last few years I’ve been thinking that Santa’s reindeer are going to absolutely _hate_ Christmas Eve when we finally colonize Mars. That’ll add, what? 30-250 million miles, depending on our respective orbits? Sure, it sounds like Santa’s got heat shielding figured out what with traveling 650 m/s, but what about radiation shielding? Reindeer-shaped pressurized suits? Freeze-and-vacuum-proofed toys? The upside is that once they’ve broken free of Earth’s gravitational field they’ll be able to coast a good portion of the way and rest up for the braking burn, but I just don’t think Ole Nick will consider it worth the trouble for a few dozen lousy souls and will secretly switch them to the naughty list. Something to consider for all you prospective spacefarers. ---
**Author:** ![Chefguy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chefguy/32/138_2.png) [@Chefguy](https://boards.straightdope.com/u/Chefguy)\ **Post date:** [December 25, 2008, 8:15pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/15 "2008-12-25T20:15:47Z")
> [@Wendell\_Wagner](#): > > You’re welcome. Here’s a thought: go shit in someone else’s thread. ---
**Author:** ![kaylasdad99](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kaylasdad99/32/3398_2.png) [@kaylasdad99](https://boards.straightdope.com/u/kaylasdad99)\ **Post date:** [December 25, 2008, 9:21pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/16 "2008-12-25T21:21:45Z")
> [@NoCoolUserName](#): > > And don’t forget the carrots left out for the Reindeer \ Why carrots? There aren’t any carrots growing on the tundra. Kids should leave out [things that reindeer like to eat](http://en.wikipedia.org/wiki/Reindeer#Diet), not carrots. ---
**Author:** ![kaylasdad99](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kaylasdad99/32/3398_2.png) [@kaylasdad99](https://boards.straightdope.com/u/kaylasdad99)\ **Post date:** [December 25, 2008, 9:27pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/17 "2008-12-25T21:27:19Z")
> [@Horseflesh](#): > > For the last few years I’ve been thinking that Santa’s reindeer are going to absolutely _hate_ Christmas Eve when we finally colonize Mars. That’ll add, what? 30-250 million miles, depending on our respective orbits? Sure, it sounds like Santa’s got heat shielding figured out what with traveling 650 m/s, but what about radiation shielding? Reindeer-shaped pressurized suits? Freeze-and-vacuum-proofed toys? > > The upside is that once they’ve broken free of Earth’s gravitational field they’ll be able to coast a good portion of the way and rest up for the braking burn, but I just don’t think Ole Nick will consider it worth the trouble for a few dozen lousy souls and will secretly switch them to the naughty list. Something to consider for all you prospective spacefarers. Anyone remember the Sci-Fi short story involving the space station with the crew putting on a Christmas celebration for the amusement/edification of the local BEMs? It was a lot of work, but they managed it, and the natives had a blast. Then it turned out that the natives’ concept of a “year” was about one Earth week, and they were going to expect annual productions. 😃 ---
**Author:** ![Musicat](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/musicat/32/20189_2.png) [@Musicat](https://boards.straightdope.com/u/Musicat)\ **Post date:** [December 25, 2008, 9:36pm UTC](https://boards.straightdope.com/t/santa-math-check/478587/18 "2008-12-25T21:36:01Z")
> [@Chefguy](#): > > 650 miles per second — Approximate speed Santa must travel to serve each household with a Christian child Only Christian childs? How bigoted. Especially considering that Santa Claus has a pagan origin. Needed for accurate calculations: time taken at each stop, amount of friction and delay generated by a fat man sliding down a thin chimney, time taken retracing steps for houses he forgot, refueling time (cookies, milk and reindeer biscuits)… ---
**Author:** ![Captain\_Amazing](https://avatars.discourse-cdn.com/v4/letter/c/6de8d8/32.png) [@Captain\_Amazing](https://boards.straightdope.com/u/Captain_Amazing)\ **Post date:** [December 26, 2008, 7:04am UTC](https://boards.straightdope.com/t/santa-math-check/478587/19 "2008-12-26T07:04:57Z")
> [@kaylasdad99](#): > > Anyone remember the Sci-Fi short story involving the space station with the crew putting on a Christmas celebration for the amusement/edification of the local BEMs? Isaac Asimov’s “Christmas on Ganymede”.