Tip Amount Calculator
Exacthalf-awayonecurrencytipminorunitsindependentlyselectedtipbasis/rate,no legalminimumor socialobligation. Explicitboundedofflineconvention,not authoritative external identity,eligibility,clinical or safe-use determination.
Description
A tip calculation applies a chosen percentage to a declared bill basis, such as a subtotal already selected by the payer.
A tip calculation applies a chosen percentage to a declared bill basis, such as a subtotal already selected by the payer.1
This tool uses integer currency minor units and basis points, where 100 basis points equals one percent.
When to use Tip Amount Calculator
Use this tool to apply the stated tip amount calculator operation with an explicit input and unit basis.
How to use Tip Amount Calculator and how it works
- Establish the measurement basis and units described above.
- Enter actualTipBasisMinorUnits, callerChosenTipBasisPoints and run the tool.
- Read result.tipMinorUnits, result.totalIncludingTipMinorUnits using the output meanings below.
- If input is rejected, correct the stated type, range, ordering or alignment issue and rerun; review successful results under the declared convention.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualTipBasisMinorUnits | Tip Basis Minor Units. Units, ordering and applicable branch are specified in the algorithm. | number | required; finite; nonnegative safe integer minor units; further conditions in the algorithm |
| callerChosenTipBasisPoints | Chosen Tip Basis Points. Units, ordering and applicable branch are specified in the algorithm. | number | required; finite; integer from 0 to 100000; further conditions in the algorithm |
Require a nonnegative safe-integer bill basis and integer tip basis points 0–100,000. Multiply with BigInt, divide by 10,000 using nearest rounding with halfway values away from zero, and add the tip to the basis; reject totals outside safe-integer range.
tipMinorUnits = roundHalfAway(basisMinorUnits × tipBasisPoints / 10000) Apply the declared units, ordering and branch conditions.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the declared output fields. | object |
| result.tipMinorUnits | Rounded tip in the declared currency minor unit. | number |
| result.totalIncludingTipMinorUnits | Bill basis plus tip in the same currency minor unit. | number |
{
"input": {
"actualTipBasisMinorUnits": 100,
"callerChosenTipBasisPoints": 1500
},
"output": {
"result": {
"tipMinorUnits": 15,
"totalIncludingTipMinorUnits": 115
}
}
}Limitations and assumptions
The output applies the declared operation to the values you supply. Establish the measurement basis, units, coefficients and any caller-selected rules before interpreting it. The tool does not independently collect or verify observations or decide whether a model or reference applies.
Supply explicit required fields with the documented types and dense aligned arrays. Unknown fields, wrong types and nonfinite numbers are rejected. Branch-specific constraints are explained above. A returned boolean, signed difference or tied result follows the stated convention; an input error instead means the required input contract was not satisfied. Very large inputs or outputs may be rejected by shared resource limits.
Alternative or Complementary methods
For a related operation, use Bill Split Calculator. Splitting a bill in currency minor units avoids fractional pennies or equivalent units.
For a related operation, use Number to Words Converter. English integer spelling combines groups of hundreds with thousand, million, billion and trillion names.
References
-
Tip Amount Calculator — tool.io
Similar or alternative tools
- Bill Split Calculator
Splitting a bill in currency minor units avoids fractional pennies or equivalent units.
- Number to Words Converter
English integer spelling combines groups of hundreds with thousand, million, billion and trillion names.