Useless Calculators

Cosmic nonsense tools. Is anyone out there?

Today, the universe is doing this

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Weight on Other Worlds

Enter your weight. Find out what you'd weigh on Jupiter, the Moon, or a neutron star.

Fun

You vs. a Light Beam

You run 100m in your best time. In those same seconds, how many times has light circled the Earth?

Hot

Light Travel Guess

Pick a destination. Guess how long light takes. Then get roasted by the universe.

Fun

Your Cosmic Birthday

The Solar System orbits the galaxy at 828,000 km/h. Since you were born, where are we now?

Fun

Relativity Clock

Fly near light speed for a year. Come back. Everyone you knew is old or gone. How much younger are you?

Fun

Interstellar Delivery

Your Amazon package is going to Mars. Pick a shipping method. Find out when it actually arrives.

Classic

Moon Light Delay

When you look at the Moon, you're seeing it as it was 1.3 seconds ago. Watch it happen live.

Drake Equation Lite

How many civilizations in the Milky Way could be sending us messages right now? Play with the variables.

If You Could Hear the Sun

Space is a vacuum. Sound can't travel. But if it could, what would the Sun sound like? And when?

Fun

Pizza Math

What's the maximum number of pieces you can cut a pizza into with N straight cuts? Spoiler: it's not N².

Light to Anywhere

Enter a distance. See how long light takes. To Alpha Centauri? To the Moon? To your coffee mug?

Deep Time Converter

How many seconds ago did dinosaurs go extinct? How long since the pyramids? Scale your sense of time.

Jump on Other Planets

How high can you jump on Earth? Find out how high you'd soar on the Moon, Jupiter, or a comet.

Distance You've Flown

Enter your age. See how many billions of km you've already traveled through space without moving.

Solar System Scale

If the Sun were a basketball, where would Earth be? How far? Pick a scale object and find out.

Fun

Neutron Star Spoon

One teaspoon of neutron star material weighs as much as what? Pick your spoon size and find out.

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About Pointless

Pointless is a collection of free, interactive cosmic calculators that answer questions nobody really needs answered — but everyone secretly wants to know. What would you weigh on Jupiter? How long does light take to reach Mars? How high could you jump on the Moon? If the Sun were a basketball, where would Earth be?

Every calculator uses real physics and accurate astronomical data sourced from NASA, ESA, and peer-reviewed astrophysics research. The questions are stupid. The math is not. All calculations run entirely in your browser — no signups, no tracking, no data collection.

This site was built for people who stare up at the sky and think "wait, what?" — and then want to do the math. Whether you're a student, a space enthusiast, or just killing time, these tools are designed to make the universe's scale feel personal. Enter your weight, your age, your sprint time — and see what the cosmos does to you.

New useless tools are added regularly. Bookmark it, share it, or just waste a few minutes staring at the universe's absurd scale.

Frequently Asked Questions

What would I weigh on Jupiter?

Jupiter's gravity is 2.5x Earth's. If you weigh 70kg on Earth, you'd weigh 176kg on Jupiter. On a neutron star, you'd weigh about 140 billion kg. Try our weight on other worlds calculator.

How long does light take to reach Mars?

When Mars is closest to Earth, light takes about 3 minutes. When it's on the other side of the Sun, about 22 minutes. Use our light travel time calculator.

What is the Drake Equation?

It estimates how many intelligent civilizations exist in the Milky Way. Our Drake Equation calculator lets you play with the variables.

How much does a teaspoon of neutron star material weigh?

About 4 billion tons — roughly 2,700 blue whales or 14 times the weight of every human combined. Use our neutron star spoon calculator.

Are these calculators free?

Yes. All tools on Pointless are completely free, no signups, no subscriptions. All calculations run in your browser — your data never leaves your device.

Privacy Policy

Last updated: September 2026

Information We Collect: Pointless does not collect, store, or transmit any personal information. All calculations run entirely in your browser.

Cookies and Tracking: We use anonymous Google Analytics to count page views. No personal data is collected.

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