Food Truck Fuel and Route Calculator

How this calculator works

This is a fuel-cost screening tool for food-truck operations. It separates the three sources of fuel burn on a typical event — round-trip drive fuel, on-site generator runtime, and propane consumption — and computes each independently so the operator can see which one is driving cost. The aggregate is the total fuel cost per event, the breakeven gross revenue needed just to cover fuel, and the fuel cost as a percentage of typical event revenue benchmarked against the industry-typical 1 to 5 percent range.

Drive fuel is round-trip miles divided by truck MPG times fuel price per gallon. For a 40-mile round trip at 9 MPG and $4.20-per-gallon diesel: 40 divided by 9 equals 4.4 gallons, times $4.20 equals $18.67 in drive fuel. Generator fuel is generator runtime hours times gallons per hour times fuel price. For a 7-hour event at 1.0 GPH and $4.20: 7 gallons times $4.20 equals $29.40 in generator fuel. Propane cost is gallons consumed times propane price per gallon. For 3 gallons at $4.00 per gallon: $12.00 in propane.

The cost-per-cover output divides total fuel cost by expected covers — a useful diagnostic when comparing fuel efficiency across event formats. The breakeven revenue output is the gross revenue that must be earned just to cover fuel, surfaced as a sanity check on whether the event route is worth running. The benchmark assessment labels the operation as efficient (under 2 percent of revenue), typical (2 to 5 percent), high (5 to 8 percent — common on long-haul routes), or warning (above 8 percent — the route or generator efficiency should be reviewed).

The framework — three independent levers

Fuel cost has three independent levers: route, generator efficiency, and equipment energy mix. Each responds to different operational decisions and each can be optimized separately.

Route is the primary lever for drive fuel. A truck that books all its events within 30 miles of its base burns roughly half the drive fuel of a truck that ranges 60 miles per event on average. The operator's booking discipline directly controls drive fuel — saying yes to a 300-mile festival adds $100+ of drive fuel to the event cost regardless of how efficient the truck is. The screening question is whether the festival gross revenue justifies the route fuel surcharge.

Generator efficiency is the primary lever for on-site burn. Three drivers of generator efficiency: generator sizing (an oversized generator running at 30 percent load is dramatically less efficient than a right-sized generator at 70 percent load), generator type (diesel is 30 to 40 percent more efficient than gas at equivalent load; inverter generators are 20 to 30 percent more efficient than conventional generators at variable load), and shore-power availability at the venue (eliminates generator burn entirely when available). Many premium festivals offer 50-amp shore power for vendors — the operator who uses it saves the entire generator-fuel line.

Equipment energy mix is the lever for propane vs generator load. Operators with all-electric equipment (induction cooktops, electric fryers) push the energy load through the generator instead of propane; operators with all-propane equipment (gas fryer, gas griddle, gas water heater) push the load through propane. The choice depends on equipment cost, weight constraints in the truck, and the relative price of propane vs gasoline or diesel.

Inputs explained

The calculator takes nine inputs across three input groups (drive, generator, propane) plus two event-context inputs (expected covers and typical event revenue for the benchmark).

Round-trip miles is the total distance from the truck base (commissary or home garage) to the event venue and back. Include any side stops in the total — ice, last-minute supply, fuel refill. Truck MPG is the operator-observed average from prior trips. Use the actual average, not the manufacturer EPA rating — the EPA rating is for empty highway driving and substantially overstates loaded commercial use.

Generator runtime hours is the total hours the generator runs at the event, including setup and teardown. A typical 6-hour service event with 30 minutes of setup and 30 minutes of teardown runs the generator for 7 hours. Events with shore power available cut this to zero. Generator GPH is the operator-observed fuel consumption rate under typical event load. Manufacturer specs are at idle and substantially understate consumption under food-truck load (refrigeration cycling, hot-hold, lighting, POS).

Propane gallons is the operator-observed consumption per event. Track this by weighing propane tanks before and after the event for the first few events to calibrate. Fuel and propane prices are the current per-gallon prices at the operator's primary refill stations.

Expected covers is used for the cost-per-cover output. Typical event revenue is used for the percentage-of-revenue benchmark. Setting typical revenue to zero suppresses the percentage benchmark and outputs only the absolute cost figures.

Industry benchmarks — typical 2026 ranges

Food-truck MPG in 2026 commonly runs 8 to 14 MPG depending on truck weight, engine, and driving conditions. A 24-foot step van averages 9 to 10 MPG; a smaller 18-foot truck averages 12 to 14 MPG; a 26-foot heavy-duty truck with a large generator on board can drop to 7 to 8 MPG.

Generator GPH commonly runs 0.5 to 1.5 GPH for a typical food-truck generator under service load. A 4kW gas generator at light load runs 0.5 to 0.7 GPH; a 7kW gas generator at typical food-truck load runs 1.0 to 1.2 GPH; a 10kW heavy-load gas generator runs 1.5 to 2.0 GPH. Diesel generators of equivalent capacity run 30 to 40 percent more efficient than gas. Inverter generators (Honda EU7000is class) run 20 to 30 percent more efficient than conventional generators at variable load.

Propane consumption on a typical 6-hour event runs 2 to 5 gallons for a truck with a fryer, griddle, and water heater. Fryers consume the most (continuous high-temp hold burns 1 gallon every 2.5 to 4 hours); griddles intermediate (1.5 to 2.5 gallons per 6-hour event for a 36-inch griddle); water heaters intermittent (0.3 to 0.8 gallons per event).

Fuel price in 2026: U.S. retail averages run $3.40 for regular gas and $4.20 for diesel, with significant regional variation (West Coast 20 to 40 percent above the national average; Gulf Coast 10 to 15 percent below). Propane at hardware-store refill commonly runs $3.50 to $5.00 per gallon. Discount-card pricing at wholesale clubs and commercial propane delivery can be 20 to 40 cents per gallon below retail.

Total fuel cost per event commonly lands at $40 to $80 for a local event (under 60 miles round trip) and $150 to $400 for a long-haul out-of-state festival (300+ miles round trip). The percentage-of-revenue benchmark: 1 to 3 percent for local routes is typical efficient; 3 to 5 percent is typical; 5 to 8 percent is high (often unavoidable on long-haul routes); above 8 percent is a warning sign.

What this calculator does NOT model

This is a fuel-and-route screening tool. It does not model:

Labor cost on the drive day. A 4-hour round-trip drive at $20 per hour for a single driver is $80 in additional labor that is not in the fuel calculator. For long-haul events, operators should add drive-day labor to the broader event-cost model.

Overnight lodging for multi-day festivals. A multi-day out-of-state event typically requires lodging for the crew, commonly $150 to $300 per night per room. This is a real per-event cost that operators sometimes forget when comparing local vs long-haul economics.

Vehicle wear-and-tear and maintenance amortization. A truck running 30,000+ miles per year has real depreciation and major-service cost (transmission rebuild every 100,000 to 150,000 miles, engine major service at similar intervals). These costs belong in the per-event depreciation reserve, not the fuel calculator.

The carbon footprint of the route. Operators with sustainability commitments may want to track CO2 emissions per event; this calculator does not output that figure but the input data (gallons consumed) can feed directly into a CO2 calculation (approximately 22 pounds of CO2 per gallon of gas, 22.4 pounds per gallon of diesel).

Tolls and parking fees on the route. Some long-haul routes through tolled corridors add $20 to $80 in tolls per event; some downtown urban venues charge $30 to $100 in vendor parking. Add these to the fuel cost for a fully-loaded route comparison.

The time cost of the drive. A 4-hour round-trip drive is 4 hours the operator is not doing revenue-producing work. At a $50 per hour opportunity cost, that is $200 of foregone-revenue cost — frequently larger than the fuel cost itself. The integrated per-event profit calculator can model this via the labor input; this fuel calculator does not.

Seasonal fuel price volatility. Fuel prices vary 20 to 40 percent seasonally in the U.S. (lower in winter, higher in summer peak driving season). Operators booking events 60+ days ahead should add a 5 to 10 percent buffer to current price to absorb seasonal drift. EIA publishes weekly retail fuel prices for forecasting.

Sources

The methodology in this calculator draws on standard fuel-economy and generator-efficiency engineering plus the following references:

U.S. Energy Information Administration — Weekly Retail Fuel Price Reports. EIA publishes weekly gasoline and diesel retail price data by region; the authoritative source for current fuel pricing inputs. Available at eia.gov/petroleum/gasdiesel.

U.S. Department of Energy — Alternative Fuels Data Center. DOE-maintained reference for fuel comparison data, generator efficiency tables, and conversion benchmarks. The GPH ranges used in the benchmarks are consistent with the DOE tables on small-scale gas and diesel generator efficiency.

National Food Truck Association. Industry trade association; operator surveys provide the typical generator-GPH range (0.5 to 1.5 GPH under service load), the typical propane consumption range (2 to 5 gallons per 6-hour event), and the typical food-truck MPG range (8 to 14 MPG).

Equipment manufacturer specifications. Honda EU7000is, Generac, and Cummins published GPH specifications for small commercial generators (with the noted caveat that manufacturer specs at idle understate consumption under typical food-truck load by 50 to 100 percent).

Industry operator interviews. The 1-5% fuel-as-percentage-of-revenue benchmark is consistent with operator surveys published by the National Food Truck Association and BizBuySell main-street brokerage reports on food-truck operating margins.

This calculator is a planning tool. It is not licensed tax, legal, accounting, or financial advice. Operators making material route or equipment decisions should validate the inputs against their own observed data and consult appropriate advisors for any consequential decision.

Last reviewed: 2026-05-16 against the U.S. Energy Information Administration weekly retail fuel price reports, the U.S. Department of Energy Alternative Fuels Data Center generator efficiency tables, and 2026 food-truck operator surveys published by the National Food Truck Association.