Parking Tariff Billing Blocks Calculator

Method and units

Billable minutes = max(0, stay − free minutes). First charge applies to the first block; each started minute beyond it adds a recurring block rounded up. Fee = first fee + additional blocks × rate, capped at an optional user-entered maximum.

Worked example

For 145 minutes parked, 15 free minutes, a 60-minute first block at $4 and 30-minute additional blocks at $2, billable time is 130 minutes: one first block plus three started blocks, or $10.

Supported inputs and interpretation

Stay/free time 0–100,000 min; block durations 1–10,000 min; fees and optional cap 0–$100,000; currency values rounded to cents. Results are rounded for display only; internal calculations retain full JavaScript precision. Entered measurements and assumptions determine the answer.

References and limitations

The equations here use the stated unit conversions and geometric or accounting relationships; no empirical vehicle limits or manufacturer presets are supplied.

This implements only the entered tariff interpretation. Real facilities may use entry-day boundaries, grace rules, validations, overnight caps, taxes or lost-ticket fees. Read posted terms; the calculator is not a quote or payment authority.

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This planner performs the stated arithmetic; it is not a vehicle inspection, engineering approval, manufacturer's recommendation or professional review.