ONE FORMULA, ONE ANSWER
Ideal Gas Isothermal Work Calculator
Calculate reversible isothermal pressure-volume work done by an ideal gas. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Work done by the gas W
Enter values and select Calculate.
W = nRT ln(V₂/V₁)
Assumptions
Required: positive inputs and a reversible quasistatic isothermal ideal-gas process. Work by the gas is positive for expansion and negative for compression. No additional heat output is returned.
Displayed values are floating-point approximations. Design safety factors and unprovided error contributions are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
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