Weight Calculator (Physics) - 無料オンライン電卓
Weight is the force of gravity on your mass. Enter your mass and pick a planet to see what you would weigh there.
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- ブラウザ内で動作
- 入力内容は非公開
Weight (force)
686.47 N
Kilogram-force
70 kgf
Pound-force
154.32 lbf
Your weight elsewhere
| Place | Gravity (m/s2) | Weight (N) |
|---|---|---|
| Earth | 9.80665 | 686.5 |
| Moon | 1.62 | 113.4 |
| Mars | 3.71 | 259.7 |
| Jupiter | 24.79 | 1,735.3 |
| Venus | 8.87 | 620.9 |
| Sun | 274 | 19,180 |
一部のコンテンツはまだ英語で表示されます。
Weight Calculator (Physics)とは
Some math calculations come up often enough that reaching for a formula sheet or spinning up a spreadsheet feels like overkill. The Weight Calculator (Physics) handles this one end-to-end: enter your values, get the result, and see the formula beside it so you can verify the working or use it as a reference. The calculation runs in your browser with no sign-up and no internet dependency once the page has loaded.
The formula is shown above the result on purpose - it lets you trace the output back by hand if you ever want to. For the overwhelming majority of real-world inputs, the precision is more than sufficient. Edge cases worth knowing: domain restrictions (like logarithms of non-positive numbers, or division by zero) are flagged clearly, and the Weight Calculator (Physics) will tell you when an input doesn't make mathematical sense rather than returning a silent wrong answer.
Weight Calculator (Physics)の使い方（3ステップ）
Enter your mass in kilograms.
Choose a planet, moon or the Sun.
Read the weight in newtons, kgf and lbf.
Weight Calculator (Physics)のしくみ
Weight is mass multiplied by the local gravitational acceleration. Your mass stays the same everywhere, but your weight changes.
W = m x g
- mmass in kg
- ggravity in m/s2
Weight Calculator (Physics)が結果を出す方法
The Weight Calculator (Physics) implements the textbook formula for weight calculator. Each step the calculator performs is mechanical and deterministic - you can trace the result through the formula by hand and arrive at the same number. For tools where multiple methods exist (e.g., different formulas for area or perimeter, different conventions for rounding), the Weight Calculator (Physics) either lets you pick the variant or defaults to the most widely-taught one.
Floating-point arithmetic has well-known quirks (e.g., 0.1 + 0.2 ≠ 0.3 exactly), but for typical problems the result is accurate to far more decimal places than you'll display. Where exactness is critical and inputs are integers or rationals, switch to the relevant exact-arithmetic tool on this site.
Weight Calculator (Physics)を使う場面
- Students at school or college using the Weight Calculator (Physics) to check homework, prepare for exams, or build intuition through trial and error.
- Teachers and tutors using the Weight Calculator (Physics) as a live demonstration tool - open it on a projector, walk through the inputs, and the answer is visible to everyone.
- Engineers, analysts and developers using the Weight Calculator (Physics) for one-off calculations where pulling out a programming language or spreadsheet would be overkill.
- Curious users exploring how a number changes as one input varies - useful for understanding the underlying relationship at an intuitive level.
よくある間違いと落とし穴
- Mixing units. Most math formulas are unit-agnostic; the calculator returns the numbers you give it, so consistency is your responsibility.
- Treating the result as exact when the inputs are approximate. Rounded inputs lead to rounded outputs.
- Misreading the formula. Spending 30 seconds reading the formula above the form removes most of the surprises later.
- Forgetting that some math formulas have domain restrictions - log of a non-positive number, square root of a negative, division by zero - the Weight Calculator (Physics) flags these but the underlying meaning is yours to interpret.
このツールを使いこなす
- Try edge-case inputs (zero, very large, negative where applicable) to understand how the calculator behaves at the limits.
- Bookmark the page. The URL is stable and the tool works offline once loaded.
- Use the formula shown above the calculator to verify by hand at least once - it builds confidence in the tool and your understanding.
- Pair this calculator with related math tools on this site to chain calculations together for multi-step problems.
Weight Calculator (Physics)に関するよくある質問
Why do I weigh less on the Moon?
The Moon's gravity is about one sixth of Earth's.
What is kgf?
The force that a mass of one kilogram exerts at standard Earth gravity.
Math in your browser
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If you're a student, double-check your work without paying for a graphing calculator. If you're a professional, use these tools as a sanity check on spreadsheet formulas. Every result is shown alongside its formula and inputs, so the math is always auditable.
The Weight Calculator (Physics) is part of the Math suite on Online Calculator Tools, alongside 5 related calculators. All tools share the same UI patterns, the same privacy-first rendering (nothing is sent to a server), and the same commitment to showing the formula and assumptions behind every result.