Fuel Stop Planner
Combine route distance with fuel economy to plan stops and cost.
By Aryan Khan, Founder & Editor · Updated October 2026
For example, a car with a 448-mile tank range on a 1,500-mile trip needs the tank filled about every 448 miles — stops near miles 448, 896 and 1,344, plus a safety margin.
How to use Fuel Stop Planner
Range first, stops second, cost third — the order a calm trip is planned in:
The Fuel Stop Planner combines a trip's route distance with your car's fuel economy to show how much fuel the journey needs and where the tank will run low. Enter the distance, consumption and price and read stops and cost together — before the low-fuel light becomes the planner.
- 1Set trip distance or route.
- 2Enter consumption and price.
- 3Read fuel needed.
What people use Fuel Stop Planner for
1. Long-haul trip planning
Know where the tank empties and the stops choose their towns. Distance from the Driving Distance Calculator, economy from your last fill.
2. Remote and sparse country
In the desert West or the outback, the gap between stations is the risk. A range plan with margin is the difference between a story and a rescue.
3. Towing and loaded trips
Loads cut economy and therefore range. Replan the stops with the towing consumption, not the solo figure, before the trailer is hitched.
4. Rental-car returns
Full-to-full policies make the last stop a decision. Plan backwards from the return: the final fill belongs near the airport, at the quantity this planner sizes.
Worked examples
14 gal tank × 32 mpg = 448-mile range. Stops fall near miles 448, 896 and 1,344 — three fills en route. Planning at 80% of range (358 miles) moves them earlier and buys margin for detours.
A 55 L tank at 7.5 L/100 km gives a 733 km range. A 1,900 km tour therefore wants fills around km 733 and 1,466 — two stops, known before departure.
Tank range planner
Range = tank size × economy, and the stop count for a long trip at a prudent 80% of range. Your car's figures replace the examples in the planner.
| Tank | Economy | Full range | Stops on 1,500 mi (at 80%) |
|---|---|---|---|
| 12 gal | 28 mpg | 336 mi | 5 |
| 14 gal | 32 mpg | 448 mi | 4 |
| 16 gal | 30 mpg | 480 mi | 3 |
| 18 gal | 38 mpg | 684 mi | 2 |
| 55 L | 7.5 L/100 km | 733 km | 3 (on 1,900 km) |
| 70 L | 9.8 L/100 km | 714 km | 3 (on 1,900 km) |
Planning at 80% of range is the common prudence — the last fifth of a tank is where stations are missing exactly when needed.
How to interpret the result
The most common errors come from using a correct result to answer the wrong geographic question. Keep these points in mind for Fuel Stop Planner:
- When optimising many stops, keep the true origin first and let the engine order the rest; then sanity-check the result visually. Optimizers minimise distance, not your time windows — hard appointments still belong in manual order.
- Add a congestion buffer to any free-flow travel time: 20–40% in peak urban areas is a sane rule of thumb, and the interface labels its times as free-flow for exactly this reason. For appointments, plan with the buffer; for physics, trust the raw number.
Limits & appropriate use
Routing's limits live in three places: data vintage, access reality and time modelling. The network is OpenStreetMap's current picture — new interchanges lag, private gates may be missing, seasonal ferries keep their own calendars. Access rules reflect mapped law, not today's roadworks. And durations are free-flow physics: speed limits and road classes without your city's sociology, so peak hours, weather and parking belong in your buffer, not in the engine's promise. The tools label all three limits on every result, because an unlabelled estimate is a trap.
What the stack does brilliantly is the reproducible core: the same stops, mode and engine give the same route to everyone, everywhere, which makes it a superb baseline for comparison, screening and planning. Escalation is domain-specific and well understood — professional dispatch adds live traffic and driver hours; logistics tenders add contracted networks; navigation products add certified maps. A free browser tool that hands you a clean, exportable baseline with its assumptions printed is not competing with those; it is feeding them.
- Live congestion and ETAs → traffic-aware commercial routing.
- Driver-hours and windows → transport-management systems.
- Certified navigation → licensed map products with update guarantees.
Data & methodology
The shared fuel workspace estimates total fuel and cost from road or straight-line distance; it does not locate fuel stations or plan refuelling stops.
For source details, licences and model limitations, see Data Sources and Methodology.
Key terms worth knowing
- Free-flow time
- Travel time from speed limits and road classes, without congestion.
- Travelling-salesman ordering
- Reordering stops to minimise total route distance.
Editorial guidance: MapBench explains the method and limitations so the tool can be used as a transparent reference, not as a black-box answer. For legal boundaries, safety-critical routing, surveying, engineering, regulated decisions or official statistics, verify the result with the responsible authority or a qualified professional.
Category: Routing & Travel Time. Results are intended for everyday analysis and planning unless a page explicitly states otherwise.
Method, assumptions & limits
- This tool’s method
- The shared fuel workspace estimates total fuel and cost from road or straight-line distance; it does not locate fuel stations or plan refuelling stops.
- Before relying on the answer
- Check the stop order, travel mode and whether the result is a network route or a simplified estimate. Repeat the calculation after changing any of these inputs.
- What the result cannot establish
- Road access, congestion and closures can change. An estimated duration is not a live arrival-time commitment.
Coverage: Worldwide. Search, basemap and external data requests may use third-party services; browser-based does not mean every operation is offline. Read the source and licence notes, calculation methodology and privacy policy. If a result looks inconsistent, report a correction with the inputs and mode used.
Frequently asked questions
Clear answers about the calculation, accuracy and appropriate use.
Station locations?
Cost/distance estimate — use a map search for actual stations.
Does the route include live traffic?
Unless the tool explicitly says otherwise, travel times are planning estimates and should not be treated as live-traffic predictions.
Why is road distance longer than straight-line distance?
Roads must follow the available network, terrain, bridges and restrictions, while straight-line distance measures the geometric minimum between two points.
Can route results change over time?
Yes. Road-network data, access restrictions and routing datasets can change, so recheck important journeys close to travel time.
Does it show station locations?
No — it plans the stop spacing from range, not a station directory. The towns near your planned mile marks are where you look for the station.
Why is road distance longer than straight-line?
Roads wind. Stops are planned against road miles — the tank empties on those.
Should I really plan at 80% of range?
It is the difference between choosing a stop and needing one. In dense country it matters less; in sparse country it is the plan.
What if the car is electric?
The same structure with kWh and chargers — the EV Range Radius tools elsewhere frame the electric version of the question.
Does it include cost?
Yes — with a price entered, the fills total into the trip's fuel cost, matching the Fuel Cost Calculator's arithmetic.
The trip has a known cheap station — plan around it?
Yes: place a stop there deliberately and size the legs either side to your range plan. Cheap fuel is a routing input, not luck.
What if my range estimate is wrong mid-trip?
The gauge is the final authority. The planner's margins (80% of range) exist precisely so a wrong estimate becomes an earlier stop, not a stranded car.
Related tools and resources
Quantities come from Fuel Needed for Trip and Gallons Needed for Distance; costs from the Fuel Cost Calculator; and the distance from the Driving Distance Calculator.
More free tools
Sources, methodology & editorial trust
- ✓ Browser-first processing where supported
- ✓ External sources are documented
- ✓ No account required for public tools
- ✓ Review data sources
Calculations are documented with their assumptions, limitations and source context rather than presented as unexplained answers.
Reviewed and maintained by Aryan Khan, Founder & Editor of MapBench.
Part of our routes & travel time hub
Fuel Stop Planner sits in the routes & travel time cluster, alongside 62 other tools that answer neighbouring questions with different methods or datasets.
You may also need
When this answer is only part of the job, these clusters cover the next step.
Read the guide behind this tool
Radius vs. Drive Time vs. Straight-Line Distance: Which Map Should You Use? — A practical guide to choosing between a radius circle, road travel-time map and straight-line distance so your result matches the real question you are trying to answer.