Bookmark them all.
1. Clever Layover
CleverLayover.com searches for multiple flights on non-partner airlines to find you the best deal.
Find the best seat on the plane with SeatGuru, which will give you important info like USB charging availability and whether or not the plane is equipped with personal TVs.
3. Mailbox Locator
Tells you where the closest USPS mailbox is to wherever you are. Find it here.
This online ruler senses the size of your screen and gives you an accurate ruler to use.
5. 10 Minute Mail
For those times when you need a throwaway email address (like getting two more free weeks of Hulu Plus). The email address will enable you to get confirmation and then self-destruct in 10 minutes. Get one here.
6. Camel Camel Camel
Shows you the price history of anything on Amazon and alerts you when the price drops. You can even upload your entire Amazon wish list directly. Try it here.
Website and app that figures out what font something is when you upload a picture. Try it here.
8. Old Version
Updating software only to find out that it no longer works the way you wanted it to is insanely frustrating. Now there’s hope. Get old versions of popular software here.
Solves any kind of math problem, from basic math to chemical equations. Not recommended for cheating at school, because actually knowing math is very important for times when you don’t have internet access to get to this site. Plus, you don’t get the steps to solving the equation unless you upgrade your account. Solve for y here.
10. Atlas Obscura
Atlas Obscura is an amazing travel resource for sites that you’ll never find in a guidebook. (I searched “historic houses” in Brooklyn and got some very cool results.)
11. Online Etymology Dictionary
Gives you the history and derivation of any word. Check it out here.
Shows you exactly how to close any social media account forever, not just disable them. Start here.
Shave literal years off your life using Lucy. Instead of waiting on hold for customer service, Lucy does the queuing in line for you, and the company calls you back, with a representative on the other line.
Your small bladder will thank you.
15. Does the Dog Die?
Avoid any unnecessary surprise trauma to your fragile soul by cross-checking potential sad-animal-death movies here.
16. Down for Everyone or Just Me?
Pretty self-explanatory. Check it out here.
Get a personalized start page for your browser so you can get to where you want to go faster (on the internet).
Compare calories and other nutritional information between two foods quickly and easily.
19. Date to Date Calculator
Wikipedia / timeanddate.com
Find out exactly how many days/months/years passed between two dates. Calculate here.
It’s like Photoshop but in your browser.
21. Adobe Kuler
Find complementary color palettes with this Adobe color wheel. Check it out here.
22. Fake Name Generator
For when you need a whole new identity. Get yours here.
23. Online Alarm Clock
For when you lose your alarm clock. (I mean phone.) Set it here.
24. Scale of the Universe
htwins.net / Via htwins.net
If you like Cosmos, you’ll love this amazingly simple site that gives you some interactive perspective on the size of the universe.
25. Can I Stream It?
Once you pick a movie, find out where you can stream it with this handy tool.
26. A Good Movie to Watch
Do you spend all your Netflix time trying to figure out which movie to watch? Problem solved! The first few random suggestions I got were both obscure and intriguing.
Supercook tells you what to cook based on the ingredients that you already have.
28. Copy Paste Character
Find the weird character or dingbat you want to use quickly and easily.
29. Print Friendly
Make any webpage printer friendly. Check it out here.
30. This to That
Find out which adhesive to use to attach one material to another. Basic but useful. Try it here.
This calculator will tell you exactly what time to go to bed based on natural sleep cycles. Get your Z’s here.
32. Word Frequency Counter
Great for finding all the words and phrases you overuse in your writing. Start here.
33. Rainy Mood
Listen to soothing rain sounds as you work. Zone out here.
Find out when your favorite produce is at peak ripeness. Go here.
A handy library of PDF user manuals for almost anything. Available here.
Turn an animated GIF into a printable flip-book. Probably the most useful website of all time. Go here now.
37. The Useless Web
For when you’re finally sick of all that usefulness.
Also published on Medium.