Mechanical Energy Calculator
Calculate kinetic and reference-dependent gravitational energy from entered SI values.
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How to use Mechanical Energy Calculator
Kinetic energy is mv²/2. Near-uniform gravitational potential is mgh relative to your chosen zero height. Their compensated sum is a model energy total, with no energy-loss or impact simulation.
- Enter mass (kg), speed (m/s), reference height (m), user gravity (m/s²).
- Choose the stated convention and check the units and supported model.
- Calculate, inspect the result, then copy or download it.
Good to know
- Positive mass/gravity, nonnegative speed and signed reference height; SI kg,m/s,m,m/s²,joules. Ideal nonrelativistic near-uniform gravity only.
- Runs locally. Text/JSON fields are capped at30,000 characters; stricter page-specific and numeric-string limits also apply. Numeric inputs are bounded to magnitude1e15 and nonzero magnitude at least1e-100 unless an exact-string mode states otherwise. Approximate summaries use12 significant digits; CSV numeric cells retain the complete stored value and potentially formula-like string cells gain a protective apostrophe; unsupported, non-finite or detected underflow states return an error.
Common questions
Can gravitational potential energy be negative?
Yes. It depends on the height zero you choose; a negative reference height produces negative mgh without implying negative mass.
Is the input uploaded or saved?
No. The tool calculates inside this browser tab and provides a local download; it does not persist your input.
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