Count Commenced Rental Billing Blocks From Pickup and Return Instants
A rental quoted by commenced blocks can change at a one-minute boundary. Enter offset-stamped pickup and return times and the billing-block length from the quote to see elapsed hours, whole blocks and allocated-but-unused hours.
1 · quote label | pickup YYYY-MM-DDTHH:MM±HH:MM | return YYYY-MM-DDTHH:MM±HH:MM
FIRST-LOAD
HYPOTHESIS / PROTOTYPE — checkout unavailable. Calculation is local. A draft is saved automatically in this browser profile when storage is available; Reset to sample clears it. Optional Pro history stores only five summaries and has its own deletion control. State links encode your inputs and can remain in browser history, clipboard or recipients’ records; share only non-sensitive rows. Optional external AI formatting leaves this device. The required site analytics beacon reports page activity; shared URLs contain encoded inputs. Do not treat an encoded URL as private. The calculator has no input-collection endpoint.
Data note: The rental-period register processes quote label | pickup YYYY-MM-DDTHH:MM±HH:MM | return YYYY-MM-DDTHH:MM±HH:MM locally. Starter/sample selection and Run compute in this tab; no input is sent by the calculator. A local draft may be saved; explicit state-link sharing or optional external AI formatting can disclose inputs. Use non-sensitive labels.
Perspective: Before: a two-date trip description obscured a commenced-block boundary. After: elapsed instants and rounded billing blocks remain separate from supplier exceptions.
2 · Read the rental-period register
Elapsed-time arithmetic only, not rental-contract, refund, consumer-rights or legal advice. It models upward rounding of rolling blocks and omits grace periods, minimum charges and price rules. Confirm the quoted billing convention and exact accepted counter times with the provider before booking or disputing a charge.
Paid layer: rental-period register filing layer
one-time step · the free reading above stays complete
Free tier
- one complete unwatermarked rental-period register run in the app
- three labeled samples and unlimited article-demo calculations
- complete result text and a user-triggered input-state link
What $4 one-time adds
- unlimited subsequent rental-period register app calculations after a local convenience signal
- print the rental-period register with visible assumptions and its safety boundary
- CSV of the displayed billing blocks and row workings; conditional estimate uses your manual-retyping minutes
- five local reading summaries (headline/count/time), not saved full inputs or cross-device backups
HYPOTHESIS / PROTOTYPE: $4 is a proposed one-time price for filing the rental-period register, not a current sales offer. No measured time saving or buyer demand is claimed. The optional manual-retyping baseline above estimates one export’s retyping budget only; it does not change the calculation or guarantee savings.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable. Browser-local, profile-scoped convenience gating is best-effort, not server-verified access. A URL or browser flag is not proof of payment. Clearing browser data removes local state; no account or cross-device recovery is provided.
Boundary and sources
Elapsed-time arithmetic only, not rental-contract, refund, consumer-rights or legal advice. It models upward rounding of rolling blocks and omits grace periods, minimum charges and price rules. Confirm the quoted billing convention and exact accepted counter times with the provider before booking or disputing a charge.
- Method: Elapsed hours equal return instant minus pickup instant divided by 3,600,000 milliseconds. Required blocks equal ceiling of elapsed hours divided by block hours. The note also shows blocks times block hours minus elapsed hours, keeping spare allocation distinct from an entitlement.
- All sample records, dates, quantities and labels are invented. No outside policy, contract, rate, clock offset, measurement or accessibility standard is represented as verified.
- Google’s official pricing documentation, fetched 2026-09-30, says AI Studio is free in available regions. Optional formatting may require a Google account; manual local entry requires none. Limits can change and free-tier content may be used to improve products. Do not send private records.
Mechanism: competence-autonomy-loop
Optional AI formatting, never the calculation
Manual entry completes this rental-period register for free without signup. If available to you, the free AI Studio interface linked in the sources may format fictional or non-sensitive notes; external access may require an account. No API key or AI call is built into this tool. Free-tier content may be used to improve products. Review each cell and transcribe it to the labeled row schema; do not paste the JSON object into the row box.
Format only these fictional or non-sensitive notes for a rental-period register. Return strict JSON shaped as {"rows": [{"label": "string", "cells": ["string", "string"]}], "setting": "string"}. The columns are quote label | pickup YYYY-MM-DDTHH:MM±HH:MM | return YYYY-MM-DDTHH:MM±HH:MM; the setting is Length of one billing block in hours. Keep all supplied strings and quantities exactly; do not calculate, infer missing entries, invent dates or add advice. If any required value is missing, return an empty rows array and ask me for it separately. I will verify every cell against my source and manually transcribe rows using vertical bars before running the local calculator.An AI response is not executed, fetched or trusted as a result. Missing values remain questions; the strict local parser checks the rows you actually enter.