The Moon
Mercury
Venus
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
The Sun
Select a specific celestial body for the main result.
Weight on Mars
56.70 lbs
Formula: Earth Weight × 0.378
Gravity Difference Factor0.38g
Weight Difference-93.30 lbs
Mass (Invariant)68.04 kg
Planetary Weight Comparison Chart
Detailed Worksheet Data
Planet / Body
Relative Gravity (g)
Calculated Weight
What is the Calculate Weight on Different Planets Worksheet?
The calculate weight on different planets worksheet is an essential educational tool used in physics and astronomy to demonstrate the relationship between mass, gravity, and weight. Unlike mass, which remains constant regardless of your location in the universe, weight is a force that changes depending on the gravitational pull of the planet or celestial body you are standing on.
This digital worksheet allows students, educators, and space enthusiasts to instantly compute how heavy an object or person would be on Mercury, Venus, Mars, Jupiter, and other bodies in our solar system. It clarifies the common misconception that "weight" and "mass" are interchangeable terms. Using a calculate weight on different planets worksheet helps visualize the intense gravity of gas giants like Jupiter versus the weak gravitational pull of dwarf planets like Pluto.
{primary_keyword} Formula and Mathematical Explanation
To successfully use a calculate weight on different planets worksheet, one must understand the underlying physics formula. Weight is defined as the force of gravity acting on an object's mass.
The core formula used is:
Wplanet = Wearth × (gplanet / gearth)
Alternatively, if you know the mass (m):
W = m × g
Variables Table
Variable
Meaning
Standard Unit
Notes
W
Weight (Force)
Newtons (N) or lbs
Changes based on location.
m
Mass
Kilograms (kg)
Constant everywhere in the universe.
g
Gravitational Acceleration
m/s²
Earth is approx 9.81 m/s².
Practical Examples (Real-World Use Cases)
Below are realistic examples of how to apply the calculate weight on different planets worksheet logic.
Example 1: An Astronaut on Mars
Scenario: An astronaut weighs 180 lbs on Earth. They are planning a mission to Mars.
Calculation: Mars has a relative gravity of approximately 0.38 (or 38% of Earth's gravity).
Math: 180 lbs × 0.38 = 68.4 lbs.
Result: On the calculate weight on different planets worksheet, the astronaut would see that they feel significantly lighter on Mars, allowing them to carry heavier equipment.
Example 2: A Rover on Jupiter
Scenario: A robotic probe has a mass of 500 kg. We want to know its "weight" force on Jupiter's "surface" (cloud tops).
Calculation: Jupiter's gravity is roughly 2.34 times that of Earth.
Math: 500 kg × 9.81 m/s² (Earth g) = 4905 N (Weight on Earth).
Jupiter Weight: 4905 N × 2.34 = 11,477.7 N.
Result: The structure must be built to withstand more than double the crushing force compared to Earth.
How to Use This {primary_keyword} Calculator
Our digital calculate weight on different planets worksheet is designed for ease of use:
Enter Weight: Input your weight (or object weight) in the "Weight on Earth" field.
Select Unit: Choose between Pounds (lbs), Kilograms (kg), or Newtons (N). Note: If you select kg, the tool treats it as "weight on a scale calibrated to Earth" for simplicity.
Choose Target: Select a specific planet (like Mars) to highlight that result.
Analyze Data: Review the dynamic chart and the detailed table below to compare the values across the solar system.
Copy Results: Use the "Copy Results" button to save the data for your homework or report.
Key Factors That Affect {primary_keyword} Results
When working with a calculate weight on different planets worksheet, several physical factors influence the final numbers:
Planet Mass: Generally, planets with higher mass have stronger gravity (e.g., Jupiter), resulting in higher weight.
Planet Radius: Gravity weakens with distance from the center. A planet might be massive, but if it has a huge radius (like Saturn), surface gravity might be lower than expected. Saturn is huge but less dense, so its surface gravity is close to Earth's.
Density: A small but dense planet can have high gravity.
Centrifugal Force: Fast-spinning planets can slightly offset gravity at the equator, reducing effective weight.
Altitude: The "surface" gravity assumes sea level (or mean radius). Being in orbit or on a high mountain changes the result.
Atmospheric Buoyancy: While usually negligible for solids, dense atmospheres (like on Venus) exert a buoyant force that theoretically reduces measured weight slightly, though standard worksheets ignore this for simplicity.
Frequently Asked Questions (FAQ)
Q: Why is my mass the same but weight changes?
Mass is the amount of matter in your body, which doesn't change when you travel. Weight is the force of gravity pulling on that mass. Since gravity varies by planet, your weight varies.
Q: Does this worksheet include Pluto?
Yes, despite being reclassified as a dwarf planet, Pluto is included in our calculate weight on different planets worksheet because of its historical and educational significance.
Q: What is the gravity on the Sun?
The Sun's gravity is immense—about 27.9 times that of Earth. You would weigh nearly 28 times more, though standing on the Sun is impossible!
Q: How accurate are these numbers?
These calculations use standard average surface gravity values. Local variations (gravity anomalies) exist on all planets but are too small to impact general worksheets.
Q: Can I use this for school homework?
Absolutely. This tool is built to assist students completing a calculate weight on different planets worksheet assignment.
Q: What unit should I use for Physics class?
Physics problems usually require Newtons (N) for weight and Kilograms (kg) for mass. Check your assignment instructions.
Q: Why is weight on the Moon so low?
The Moon has much less mass than Earth (about 1.2% of Earth's mass), resulting in surface gravity that is only 16.6% of Earth's.
Q: Is 1 kg equal to 2.2 lbs on Mars?
No. 1 kg is a unit of mass. On Earth, 1 kg weighs ~2.2 lbs. On Mars, 1 kg of mass weighs only about 0.83 lbs force.
Related Tools and Internal Resources
Explore more of our scientific and financial calculators:
// Constants for Gravity Factors (Relative to Earth = 1)
var PLANET_DATA = [
{ name: "Mercury", factor: 0.38, color: "#a5a5a5" },
{ name: "Venus", factor: 0.91, color: "#e3bb76" },
{ name: "Earth", factor: 1.00, color: "#28a745" },
{ name: "Moon", factor: 0.166, color: "#888888" },
{ name: "Mars", factor: 0.38, color: "#dd4b39" },
{ name: "Jupiter", factor: 2.34, color: "#bcafb2" },
{ name: "Saturn", factor: 1.06, color: "#c5ab6e" },
{ name: "Uranus", factor: 0.92, color: "#73cbf0" },
{ name: "Neptune", factor: 1.19, color: "#5b5ddf" },
{ name: "Pluto", factor: 0.06, color: "#d1c6ad" },
{ name: "Sun", factor: 27.9, color: "#ffaa00" }
];
// Initialize Calculator
window.onload = function() {
calculateWeight();
};
function calculateWeight() {
var earthWeightInput = document.getElementById('earthWeight');
var weightUnit = document.getElementById('weightUnit').value;
var targetPlanetName = document.getElementById('targetPlanet').value;
var errorDiv = document.getElementById('earthWeightError');
var weightVal = parseFloat(earthWeightInput.value);
// Validation
if (isNaN(weightVal) || weightVal = 0 ? "+" : "";
document.getElementById('weightDiffResult').innerText = sign + formatNumber(diff) + " " + weightUnit;
// Mass Calculation (Approximation based on Earth g)
// If Unit is kg, mass is technically the input value (colloquially),
// but strictly mass = weight/g.
// For this worksheet context:
// If lbs: mass = lbs / 2.20462 kg
// If kg: mass = input kg
// If N: mass = N / 9.81 kg
var mass = 0;
if (weightUnit === 'lbs') {
mass = weightVal / 2.20462;
} else if (weightUnit === 'kg') {
mass = weightVal;
} else if (weightUnit === 'N') {
mass = weightVal / 9.81;
}
document.getElementById('massResult').innerText = formatNumber(mass) + " kg";
// 2. Update Table
updateTable(weightVal, weightUnit);
// 3. Update Chart
drawChart(weightVal);
}
function getPlanetData(name) {
for (var i = 0; i < PLANET_DATA.length; i++) {
if (PLANET_DATA[i].name === name) return PLANET_DATA[i];
}
return PLANET_DATA[2]; // Default Earth
}
function updateTable(baseWeight, unit) {
var tbody = document.getElementById('resultsTableBody');
tbody.innerHTML = ""; // Clear existing
for (var i = 0; i < PLANET_DATA.length; i++) {
var planet = PLANET_DATA[i];
var calcW = baseWeight * planet.factor;
var row = document.createElement('tr');
var cellName = document.createElement('td');
cellName.innerText = planet.name;
var cellGravity = document.createElement('td');
cellGravity.innerText = planet.factor + "g";
var cellResult = document.createElement('td');
cellResult.innerText = formatNumber(calcW) + " " + unit;
cellResult.style.fontWeight = "bold";
cellResult.style.color = "#004a99";
row.appendChild(cellName);
row.appendChild(cellGravity);
row.appendChild(cellResult);
tbody.appendChild(row);
}
}
function drawChart(baseWeight) {
var canvas = document.getElementById('planetChart');
var ctx = canvas.getContext('2d');
// Handle high pixel density
var dpr = window.devicePixelRatio || 1;
var rect = canvas.getBoundingClientRect();
// Fix for first load sometimes having 0 width
var width = rect.width || 600;
var height = 400;
canvas.width = width * dpr;
canvas.height = height * dpr;
ctx.scale(dpr, dpr);
canvas.style.width = width + "px";
canvas.style.height = height + "px";
// Clear
ctx.clearRect(0, 0, width, height);
// Calculate max value for scaling (exclude Sun to keep chart readable, or cap it)
// Let's exclude Sun from auto-scale if it blows up the chart too much,
// but user might want to see it. Let's include all but cap max scale slightly above Jupiter
// actually let's just find the max value.
var maxWeight = 0;
// Filter out Sun for chart scaling if it makes others invisible?
// The Sun is 27x, Jupiter is 2.3x. Sun makes everything else look like 0.
// Let's scale based on Jupiter (max relevant planet) and clip Sun or scale to Sun.
// Better UX: Scale to Sun but it will make others small.
// Let's Scale to Jupiter and var Sun go off chart or just include it?
// Let's use Jupiter as reference max (approx 2.5x earth)
var labels = [];
var values = [];
var colors = [];
for (var i = 0; i < PLANET_DATA.length; i++) {
if (PLANET_DATA[i].name === "Sun") continue; // Skip Sun for readability of chart
labels.push(PLANET_DATA[i].name);
values.push(baseWeight * PLANET_DATA[i].factor);
colors.push(PLANET_DATA[i].color);
}
// Recalculate max for scaling based on Jupiter/others
var maxValue = 0;
for (var j=0; j maxValue) maxValue = values[j];
}
var chartMax = maxValue * 1.1; // Add 10% headroom
// Draw Bars
var padding = 40;
var barWidth = (width – (padding * 2)) / values.length – 10;
var bottomY = height – 30;
for (var k = 0; k < values.length; k++) {
var val = values[k];
var barHeight = (val / chartMax) * (bottomY – 40);
var x = padding + (k * (barWidth + 10));
var y = bottomY – barHeight;
// Bar
ctx.fillStyle = colors[k];
ctx.fillRect(x, y, barWidth, barHeight);
// Label
ctx.fillStyle = "#333";
ctx.font = "12px Arial";
ctx.textAlign = "center";
ctx.fillText(labels[k], x + barWidth/2, bottomY + 15);
// Value on top
ctx.fillStyle = "#666";
ctx.font = "10px Arial";
ctx.fillText(Math.round(val), x + barWidth/2, y – 5);
}
// Axis Line
ctx.beginPath();
ctx.moveTo(padding – 10, bottomY);
ctx.lineTo(width – padding + 10, bottomY);
ctx.strokeStyle = "#ccc";
ctx.stroke();
}
function resetCalculator() {
document.getElementById('earthWeight').value = "150";
document.getElementById('weightUnit').value = "lbs";
document.getElementById('targetPlanet').value = "Mars";
calculateWeight();
}
function copyResults() {
var w = document.getElementById('earthWeight').value;
var u = document.getElementById('weightUnit').value;
var t = document.getElementById('targetPlanet').value;
var res = document.getElementById('mainResult').innerText;
var text = "Calculate Weight on Different Planets Worksheet Results:\n";
text += "Input Weight (Earth): " + w + " " + u + "\n";
text += "Target Body: " + t + "\n";
text += "Resulting Weight: " + res + "\n";
text += "Generated by PlanetCalc Pro.";
var tempInput = document.createElement("textarea");
tempInput.value = text;
document.body.appendChild(tempInput);
tempInput.select();
document.execCommand("copy");
document.body.removeChild(tempInput);
var btn = document.querySelector('.btn-copy');
var originalText = btn.innerText;
btn.innerText = "Copied!";
btn.style.background = "#218838";
setTimeout(function(){
btn.innerText = originalText;
btn.style.background = ""; // Reset to CSS default
}, 2000);
}
function formatNumber(num) {
return num.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
}