Weight on the Sun Calculator — Nominal Surface Gravity

Compare a mass under the Sun’s nominal surface gravity with its force under standard Earth gravity. Kilograms and pounds are accepted as mass inputs, and the output separates mass from force. The Sun is a star made of plasma, so this is a reference calculation rather than a possible weighing experiment.

How to use this tool

1. Enter the mass and select kilograms or pounds.
2. Keep the displayed gravity reference in mind when comparing another source.
3. Read newtons for SI force, and kgf or lbf for conventional force equivalents.
4. Use the reference table to check how force scales with mass.

Formula

F = m × g; force in kgf = F ÷ 9.80665; force in lbf = F ÷ 4.4482216152605

F is force in newtons, m is mass in kilograms, and g is acceleration in m/s². One avoirdupois pound of mass is exactly 0.45359237 kg. No rounded Earth-weight multiplier is used.

Example

At the adopted solar acceleration of 274.0 m/s², a 70 kg mass has a gravitational force of 19,180 N. A 10 kg mass gives 2,740 N. The 70 kg mass remains 70 kg; the much larger newton value describes the stronger gravitational field.

Reference model

The NASA reference value describes the Sun’s nominal surface region. Gravity changes with distance from the center, and conditions inside the Sun require a different mass-distribution model. This calculator does not extend the surface value to arbitrary heights or depths, and it does not calculate heat, radiation exposure or apparent weight during orbital motion.