On the Sun, you would weigh 2,790% of your weight on Earth. Multiply your Earth weight by 27.9: a 70 kg person would read 1,960 kg, and a 154 lb person 4,310 lb. That is 27.9 times as heavy as on Earth. Your mass does not change; only the pull on it does.
The surface gravity is 274 m/s² against 9.81 m/s² on Earth. It is measured at the 1-bar level, because there is no solid surface to measure from. Weight is mass times local gravity, W = m × g, so the scale reading is your Earth reading times 27.9.
Weight on the Sun by Earth weight
Each row is a person’s Earth weight and what the same person reads on the Sun. The pounds column converts the kilograms (1 kg = 2.20462 lb); the ratio 27.93 is the same for any unit.
| On Earth | On the Sun (kg) | On the Sun (lb) |
|---|---|---|
| 40 kg (88.2 lb) | 1,120 kg | 2,460 lb |
| 50 kg (110 lb) | 1,400 kg | 3,080 lb |
| 60 kg (132 lb) | 1,680 kg | 3,690 lb |
| 70 kg (154 lb) | 1,960 kg | 4,310 lb |
| 80 kg (176 lb) | 2,230 kg | 4,930 lb |
| 90 kg (198 lb) | 2,510 kg | 5,540 lb |
| 100 kg (220 lb) | 2,790 kg | 6,160 lb |
Calculated as weight × 274 ÷ 9.81. A bathroom scale calibrated on Earth would show these values.
Why gravity is 274 m/s² on the Sun
Surface gravity follows from the body’s mass M and its radius R: g = G M ÷ R². The simulation uses a radius of 695,700 km at the 1-bar level, which with g = 274 m/s² corresponds to a mass of 0.999 solar masses.
On the Sun’s visible surface you would weigh 27.9 times as much as on Earth. A 70 kg person would read about 1,960 kg, the weight of a large car. The surface is a layer of gas at about 5,800 K, so this is a thought experiment and nothing could stand there.
The Sun’s mass is 1.99 × 10³⁰ kg, which is 99.86% of everything in the Solar System, yet you are 109 Earth radii from its centre, which is why the pull is only about 28 times ours. The escape speed is 617 km/s, the speed a rocket would need to leave it from the surface.
A jump and a fall on the Sun
Gravity sets more than weight. The take-off speed that lifts you 50 cm on Earth would raise you 1.79 cm on the Sun, in a jump lasting 22.9 ms against 0.639 s on Earth. A ball dropped from 2 m takes 0.121 s to land, compared with 0.639 s on Earth.
Escape speed, the speed at which you leave for good, is 617 km/s, against 11.2 km/s for Earth. It does not depend on your mass.
Compare with other worlds
For a 70 kg person, here is the pull and the scale reading on each body in the simulation. Select one to get its own page.
| Body | Gravity | A 70 kg person reads |
|---|---|---|
| Mercury | 3.7 m/s² | 26.4 kg |
| Venus | 8.87 m/s² | 63.3 kg |
| The Moon | 1.62 m/s² | 11.6 kg |
| Mars | 3.71 m/s² | 26.5 kg |
| Jupiter | 24.8 m/s² | 177 kg |
| Saturn | 10.4 m/s² | 74.5 kg |
| Uranus | 8.87 m/s² | 63.3 kg |
| Neptune | 11.2 m/s² | 79.6 kg |
| Pluto | 0.62 m/s² | 4.42 kg |
| The Sun | 274 m/s² | 1,960 kg |
| Neutron star | 1.3×10¹² m/s² | 9.2 trillion kg |
This page is one case from the full guide, Weight on other planets, which covers every case, the assumptions behind the model and what it leaves out.
Other cases
- Mercury 70 kg reads 26.4 kg
- Venus 70 kg reads 63.3 kg
- The Moon 70 kg reads 11.6 kg
- Mars 70 kg reads 26.5 kg
- Jupiter 70 kg reads 177 kg
- Saturn 70 kg reads 74.5 kg
- Uranus 70 kg reads 63.3 kg
- Neptune 70 kg reads 79.6 kg
- Pluto 70 kg reads 4.42 kg
- Neutron star 70 kg reads 9.2 trillion kg
Frequently asked questions
How much does a 70 kg person weigh on the Sun?
1,960 kg (4,310 lb). The ratio to Earth is 27.9, from g = 274 m/s² against 9.81 m/s².
Does my mass change on the Sun?
No. Mass is the amount of matter in you and stays the same everywhere. Weight is the force gravity puts on that mass, so it is the weight that changes, to 2,790% of its Earth value.
How do I work out my weight on the Sun?
Multiply your Earth weight by 27.9. In kilograms or pounds the answer comes out in the same unit, because the ratio has no unit.
Could anyone stand on the Sun?
No. There is no solid surface: the gravity figure is taken at the 1-bar level, so it describes the pull at the cloud tops, not a place to stand.
Part of the learning path Gravity and motion, from a thrown ball to a planet.
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