Examples
Examples
Try the starting example
- Original paid booking total (USD)
- 120
- New hire duration (hours)
- 72
- New daily rate (USD/day)
- 35
- New extras (USD)
- 10
- Credit fraction of original paid total
- 1
- Amendment fee (USD)
- 5
- Revised booking total (USD)
- $120.00
- Additional payable (USD)
- $0.00
- Refund under entered rule (USD)
- $0.00
Try another scenario
- Original paid booking total (USD)
- 150
- New hire duration (hours)
- 96
- New daily rate (USD/day)
- 40
- New extras (USD)
- 15
- Credit fraction of original paid total
- 0.8
- Amendment fee (USD)
- 10
- Revised booking total (USD)
- $185.00
- Additional payable (USD)
- $65.00
- Refund under entered rule (USD)
- $0.00
Calculation method
Calculation method
Revised booking total (USD)
ceil(new hours/24)×daily rate+extras+amendment fee.
Additional payable (USD)
max(0,revised−original paid×credit fraction).
Refund under entered rule (USD)
max(0,credited original−revised).
Symbols and units
- a
- Original paid booking total (USD)
- b
- New hire duration (hours)
- c
- New daily rate (USD/day)
- d
- New extras (USD)
- e
- Credit fraction of original paid total
- f
- Amendment fee (USD)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Original/new elapsed hire durations repriced by supplied daily rates; unused original total credited only by entered fraction. Supported limits: All numeric inputs and computed intermediates must remain finite. Supported numeric input magnitude is zero or 1e-12 through 1e12 in absolute value; reject values outside this bounded range. All lists/JSON record tables are limited to 100 records unless a stricter bound is stated; reject malformed record arity and wrong member types. All numeric values must be finite. Lists contain at most 100 records; required lists must be nonempty. Rates, probabilities and fractions are entered as fractions, not percentages; fractions must be between 0 and 1. Use a single consistent user-selected currency for all amounts; no exchange-rate conversion.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.