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Health & FitnessGenerated accuracy model review: 2026-05-06

Smoking Cost Calculator accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

  • The math is simple but shocking: * **Daily Cost:** (Cigarettes / 20) × Price per Pack * **Annual Cost:** Daily Cost × 365 * **Lifetime Cost:** Annual Cost × Years

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

  • Cigarettes per Day: 20
  • Cost per Pack: $10
  • Years: 10

Expected outputs

  • Annual Cost: $3,650.00
  • Monthly Cost: $300.00
  • Total Cost (Years): $36,500.00

Known limitations

  • This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
  • Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

  • The estimate assumes cigarette price and daily consumption stay roughly constant over time.
  • Costs include pack spending only and do not include medical, insurance, or productivity costs.
  • Price differences by region, taxes, and brand can change real totals considerably.

Unit handling

  • Cigarettes per Day accepts numeric values.
  • Cost per Pack accepts values in $.
  • Years accepts numeric values.
  • Annual Cost is displayed as currency.
  • Monthly Cost is displayed as currency.
  • Total Cost (Years) is displayed as currency.

Rounding rules

  • Number displays use up to 2 decimal places in the calculator UI.
  • Currency outputs are displayed with standard US dollar formatting.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current smoking-cost-calculator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for Smoking Cost Calculator.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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