力 単位変換ツール
N、kgf、lbf、ダイン
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Quick Answer
1 Newton = force to accelerate 1 kg by 1 m/s². 1 kgf = 9.807 N. 1 lbf = 4.448 N. The Newton is the SI standard; kgf and lbf are gravitational units that depend on standard gravity (9.80665 m/s²).
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Calculadora de Conversao de Forca
Converta entre unidades de forca: Newton, quilonewton, libra-forca, quilograma-forca e dina.
Design Notes
In electronics, relevant forces include connector insertion force (1-5N per pin), button actuation force (0.5-3N), and solder joint shear strength (20-60N). Force specifications appear in connector datasheets and mechanical reliability testing.
Common Mistakes
- 1
Confusing mass (kg) with force (N) — they are not interchangeable. 1 kg has a WEIGHT of 9.81 N on Earth.
- 2
Using lbf when lb (mass) was intended, or vice versa — the NASA Mars Climate Orbiter crash was caused by this.
- 3
Forgetting that kgf is NOT the same as kg — kgf is a force unit while kg is a mass unit.
Knowledge Base
1kgfは何ニュートン？
正確に9.80665N。標準重力加速度下で1kgの質量が受ける力。
質量と力の違いは？
質量（kg）はどこでも一定。力（N）は重力に依存：F = m × g。
ポンド力→ニュートンは？
1 lbf = 4.44822 N。逆：1 N = 0.2248 lbf。
電子機器で関連する力は？
コネクタ挿入力：1〜5N/ピン。ボタン押下力：0.5〜3N。はんだ接合せん断強度：20〜60N。
NASAはどの単位系？
1999年のMars Climate Orbiter事故（lbf/N取り違え）後、SI（ニュートン）に統一。