Vehicle Operating Cost Calculator

Inputs

Use consistent units for distance and costs.

After submitting, results appear above the form.

Distance unit

Sets per-distance fields and output unit.

Annual distance

Total distance driven per year.

Trip distance (optional)

Used to estimate cost per trip.

Fuel efficiency unit

Choose the unit used in your data.

Fuel price unit

Auto-converts for fuel calculations.

Fuel price

Enter in the selected fuel price unit.

Fuel efficiency value

MPG or L/100km based on selection.

Maintenance per distance

Oil, service, parts, labor.

Tires per distance

Tire wear allocation per unit distance.

Tolls per distance

Optional: tolls divided by distance.

Other variable per distance

Consumables, washes, minor supplies.

Insurance (annual)

Fixed yearly premium.

Depreciation (annual)

Value loss over the year.

Financing (annual)

Interest or lease charges per year.

Registration & permits (annual)

Licensing, inspections, permits.

Parking & storage (annual)

Garage, yard, depot fees.

Taxes (annual)

Road taxes or similar fees.

Other fixed (annual)

Telematics, admin, compliance, etc.

Overhead (%)

Applied on base annual cost.

Contingency (%)

Applied after overhead is added.

Annual operating hours (optional)

Used to compute cost per hour.

Reset

Example data table

Use these numbers to test the calculator quickly.

Item	Example value	Notes
Annual distance	12,000	Miles per year
Fuel price	3.80	Per gallon
Fuel efficiency	26	MPG
Maintenance per mile	0.08	Service and repairs
Tires per mile	0.03	Wear allocation
Insurance	1,200	Annual
Depreciation	2,400	Annual
Overhead	5%	Project overhead
Contingency	3%	Risk buffer

Tip

For fleets, enter averages across similar vehicles. Use scenario runs for fuel volatility and maintenance spikes.

Formula used

Fuel cost per mile = (Fuel price per gallon) ÷ (MPG).
Fuel cost per km = (Fuel price per liter) × (L/100km ÷ 100).
Variable cost per distance = Fuel + Maintenance + Tires + Tolls + Other variable.
Fixed annual cost = Insurance + Depreciation + Financing + Registration + Parking + Taxes + Other fixed.
Base annual cost = (Variable per distance × Annual distance) + Fixed annual.
Overhead amount = Base annual × Overhead%.
Contingency amount = (Base annual + Overhead) × Contingency%.
Total annual cost = Base annual + Overhead + Contingency.
Cost per distance = Total annual ÷ Annual distance.

How to use this calculator

Select your distance unit and fuel efficiency unit.
Enter annual distance and your fuel price details.
Fill per-distance variable costs using recent records.
Enter fixed annual costs from invoices and budgets.
Add overhead and contingency for project-grade estimates.
Press Calculate to view results above the form.
Use CSV or PDF to share the scenario output.

FAQs

1) What is included in operating cost?

It includes variable items per distance and fixed yearly items. Fuel, maintenance, tires, and tolls are variable. Insurance, depreciation, financing, and fees are fixed.

2) Why add overhead and contingency?

Overhead captures indirect costs like supervision, administration, and compliance. Contingency covers uncertainty like fuel swings or unexpected repairs. Together they improve planning reliability.

3) How do I estimate depreciation?

Use your accounting method or market value changes. A simple approach is (Purchase price minus expected resale) divided by service years. Enter the resulting annual amount.

4) What if I only know monthly costs?

Multiply monthly fixed costs by twelve to get annual values. For variable costs, divide total monthly spend by distance driven that month to obtain per-distance rates.

5) Should fleets use one set of inputs?

For a quick benchmark, use averages across similar vehicles. For bidding or engineering studies, run separate scenarios by vehicle class, duty cycle, and route profile.

6) How is cost per trip calculated?

Cost per trip equals cost per distance multiplied by trip distance. It uses the total annual cost per distance, so fixed annual costs are spread across the annual distance.

7) Why does cost per distance change with mileage?

Fixed annual costs are distributed across distance. Higher annual distance reduces fixed cost per distance. Lower annual distance increases it, even if variable rates stay constant.