Check Range Margin Over the Longest Service-Free Gap
A route is only as safe as its longest stretch without fuel, water or charging. Compare each section’s worst gap with your real range and see which margin is thinnest.
1 · route section | section length km | longest service-free gap km
FIRST-LOAD
Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Data note: Everything runs in this browser tab on the range dipstick: your route section | section length km | longest service-free gap km stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Perspective: Before: Range depends on consumption, load, terrain and climate use. After: the range dipstick shows the working beside each named row so the reader can change the assumption and inspect the consequence.
2 · Read the range dipstick
Route planning arithmetic with a range you supply. Not vehicle advice, a range guarantee or off-road safety assessment; carry reserves appropriate to the terrain and check current service availability.
Paid layer: range dipstick print and history
one-time step · the free reading above stays complete
Free tier
- one complete range dipstick run in the app
- three samples plus unlimited article-demo runs
- unwatermarked result text and an explicit, user-triggered state link
What $4 one-time adds
- print the range dipstick with its row workings
- CSV of km of margin and row explanations
- last five reading summaries saved in this browser profile
$4 once for repeated filing of the range dipstick, not for a better answer. Illustrative time basis: avoiding one five-minute manual reformat per saved reading; no market-price or guaranteed-savings claim.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable until a payment link is configured. The optional unlock is browser-local, profile-scoped and best-effort, not server-verified access. Clearing browser data can remove it; there is no account or cross-device recovery.
Boundary and sources
Route planning arithmetic with a range you supply. Not vehicle advice, a range guarantee or off-road safety assessment; carry reserves appropriate to the terrain and check current service availability.
- Method: The summary reports the smallest margin across sections, because that is the stretch that decides the plan. Sixty kilometres of margin on the mountain pass is the binding number in the alternate sample.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-28, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Mechanism: competence-autonomy-loop
Optional AI formatting, not calculation
For this range dipstick, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a range dipstick. Return plain rows only: route section | section length km | longest service-free gap km. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: route section | section length km | longest service-free gap km. No AI response is executed as code.