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Weight on other planets calculator

Find out how much you would weigh on another planet or the Moon.

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Need Weight there (kg)? The Weight on other planets calculator derives it from Your weight (kg), Planet in one step. For instance, with Your weight (kg) = 70 and Planet = Mercury it returns Weight there (kg) = 26.46.

How to use it

  1. Enter your values: Your weight (kg), Planet.
  2. Read the result instantly: Weight there (kg).

Frequently asked questions

What does the Weight on other planets calculator actually compute?

It takes Your weight (kg) and Planet and derives Weight there (kg) from them. The calculation is live as you type, so the result updates on every change.

What information do I need to provide?

2 values: Your weight (kg) and Planet. Nothing else is required — no account, no file upload.

Can you show a worked example?

With Your weight (kg) = 70 and Planet = Mercury, the calculator returns Weight there (kg) = 26.46. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

What happens if I enter larger values?

It moves a lot. Using Your weight (kg) = 77 and Planet = Venus instead, Weight there (kg) goes from 26.46 to 69.839 — which is why it is worth testing a few scenarios rather than trusting a single figure.

Which “Planet” option should I choose?

You can pick between « Mercury », « Venus », « Moon », « Mars », « Jupiter » and « Saturn ». Each one changes what the calculator works out, so switch and compare — the default is « Mercury ».

What does it give for smaller values?

Scaled down to Your weight (kg) = 63 and Planet = Mercury, Weight there (kg) comes out at 23.814. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Checking a homework answer, sizing something before building it, and getting an order of magnitude before committing to a design — a torque on a bolt, the force a spring returns, the frequency a circuit resonates at, how long light takes to arrive.

What is the most common mistake?

Feeding in a value in the wrong unit. Physics formulas assume SI throughout, so grams instead of kilograms or centimetres instead of metres shifts the answer by powers of ten without any warning.

What is the difference between the Weight on other planets calculator and the Weight from mass calculator?

This one returns Weight there (kg); the Weight from mass calculator returns Weight (N). That is the whole difference — open the one whose figure you need.

Where do the figures come from, and how current are they?

Constants are the CODATA values and the formulas are the textbook ones. Most assume an idealised case — no air resistance, no friction, a point mass — and the tool says so where the simplification matters.

Further reading

All guides →
ExplainerWhat Would You Weigh on Other Planets?Weight depends on gravity, but mass does not — here is why you would weigh differently on the Moon, Mars and Jupiter, and how to work it out.ExplainerHow Buoyancy Works: Archimedes' Principle, and Why Ice Floats With 10.5 % Above WaterThe upward force equals the weight of the fluid pushed aside. That one sentence decides whether something floats, and if it floats, exactly how much of it stays under.GuideThe Four Kinematics Equations: Which One to Use, and What Each One Leaves OutFive variables, four equations, and each equation is missing exactly one of them. Choose by looking at the variable the question never mentions.ExplainerHow the Doppler Effect Works: The Formula, the Sign Convention, and Why Moving the Source Is Not the Same as Moving the ListenerFor sound, f' = f(v + v_o)/(v − v_s) — and getting the signs backwards is the classic error. Here is the convention spelled out, a 440 Hz source computed at four speeds, and why light needs a different equation entirely.ExplainerWhat Is the Reynolds Number? The Formula, the Units That Cancel, and Why 2 300 Is Only for PipesRe = ρvL/μ compares inertia with viscosity, and the units really do cancel. See the number worked out for honey, a household pipe, an artery, a swimmer and a wing — and why the 2 300 threshold belongs to pipe flow alone.ExplainerHooke's Law Explained: F = kx, Real Spring Constants, and Where It Stops HoldingHooke's law says force is proportional to stretch — but only below the elastic limit. Here is F = kx with worked numbers, what a 200 N/m spring actually feels like, and how springs combine.