Equipment Fuel Cost Calculator
Estimate fuel burn and cost for a machine by the day or across the whole project. Pick a machine class for a typical planning burn rate — or better, enter the gal/hr your own telematics or fuel tickets show — set run hours and diesel price, and get gallons and dollars for fuel budgeting, mobilization planning, and surcharge math. Free, no login.
Equipment
Fuel Burn & Cost
Burn rates are rough planning figures and vary with load, idle time, and machine condition.
How this calculator works
The chain is one multiplication after another — nothing hidden:
gal/day = burn (gal/hr) × run hours · gal total = gal/day × days · cost = gallons × $/gal
Every bit of judgment lives in the burn rate. The dropdown’s per-machine figures are rough planning numbers for mid-load work — not manufacturer specs, not measurements, and not tied to any one model. Real burn moves with load factor more than anything else: the same excavator might burn a third of its working rate while idling and half again more in hard digging. Run hours matter the same way — a machine on site 8 hours rarely works 8; many estimators plan fuel on 60–75% of clock hours plus idle burn. If you have telematics averages or fuel-ticket history for your own iron, use those numbers instead of the presets — that is what the Custom entry is for.
Worked example
A mid-size excavator on a two-week (10 working day) utility job, 8 run hours a day, diesel at $4.00/gal, using the 4.0 gal/hr planning figure:
- Daily burn: 4.0 × 8 = 32 gal/day, costing 32 × 4.00 = $128.00/day.
- Project: 32 × 10 = 320 gal = $1,280.00.
- Sensitivity: the same job at a heavy-dig 5.5 gal/hr is 440 gal / $1,760 — a 37% swing from load factor alone, which is why the burn rate deserves more attention than the arithmetic.
Enter the same job above (Excavator (mid), 8 hours, 10 days, $4.00) to reproduce it.
Reference: typical planning burn rates
These are rough planning figures, not specs. They assume a mid-range load factor on a typical machine in each class; actual burn varies with machine size and model, load, idle share, terrain, and operator. The table is the exact preset list behind the calculator’s dropdown — replace any of it with your own fleet data the moment you have it.
| Machine class | Planning burn (gal/hr) |
|---|---|
| Skid steer | 1.5 |
| Mini excavator | 1.8 |
| Excavator (mid) | 4.0 |
| Excavator (large) | 7.0 |
| Backhoe | 3.0 |
| Wheel loader | 5.0 |
| Dozer (D6-class) | 6.5 |
| Generator (50 kW) | 3.5 |
Frequently asked questions
How much fuel does an excavator burn per hour?
As rough planning figures: a mini excavator burns around 1.8 gal/hr of diesel, a mid-size machine around 4, and a large excavator around 7 — those are the presets this calculator uses. Actual burn varies a lot with load, idle time, ground conditions, and machine condition, so treat the presets as starting points and replace them with your own fleet numbers when you have them.
How do I calculate fuel cost for a construction project?
Fuel cost = burn rate (gal/hr) × run hours per day × days × price per gallon — exactly what this calculator does. Pick a machine preset or enter your own burn rate, set your expected engine hours per day, the project duration, and the current diesel price, and you get gallons and dollars per day and for the whole project.
Should I use run hours or shift hours?
Run hours — the time the engine is actually turning, not the length of the shift. A machine on site for a 10-hour day often logs well under that on the hour meter between staging, waiting, and moves. Hour-meter readings or telematics from your own fleet are the best source; if all you have is shift length, discount it and note the assumption in your estimate.
Where do the preset burn rates come from?
They are typical mid-range diesel figures for each machine class — the kind of numbers used for mobilization and fuel planning, not measured values for any specific model or duty cycle. The moment you edit the burn field the calculator switches to Custom, and the best long-term move is exactly that: divide your fuel tickets by your hour-meter readings and enter your real rate.
How do I estimate fuel escalation or a fuel surcharge for a bid?
Start from the project gallons this calculator gives you: total gallons × current price is your baseline fuel cost, and total gallons × each dollar of price movement is your exposure to escalation. On longer jobs, contractors typically either carry a contingency against that exposure or tie the contract to a published fuel index — either way, the gallons figure is the number you need first.
Method: gallons = burn rate × hours × days, cost = gallons × price — the math is exact; the burn rate is not. The preset rates are planning heuristics with no citation behind them, and they are the number to challenge first when a fuel budget matters: pull your machines’ telematics averages or divide fuel tickets by hour-meter readings for a rate that is actually yours. The calculator prices fuel only — DEF, lube, transport fuel for the lowboy, and generator/light-plant support burn are separate lines, and fuel-price risk on long jobs is its own decision (escalation clause, surcharge, or carried contingency).
Pair with the Labor & Crew Cost Estimator for the crew running the machine — the two together are most of a daily field cost — or the Markup & Margin Calculator to roll the total into a price.