Calculate rate per kilometer from total trip cost and distance, or solve for trip cost or distance, with mile conversion and optional passenger splitting.

Required: total cost and distance.

Include the trip costs relevant to your purpose, such as fuel, tolls, fees, or operating expenses.

Splits the total cost equally without changing the vehicle’s overall rate.

Related Calculators

Rate Per Km Formula

The calculator has three modes. Each mode converts distance to kilometers when needed, then calculates the cost per kilometer or total trip cost.

Total Cost = Distanceₖₘ × Rate₍per km) + Fixed Fees
Rate₍per km) = (Total Cost - Fixed Fees) / (Distanceₖₘ)
Effective Rate₍per km) = (Total Cost) / (Distanceₖₘ)
Fuel Cost = Fuel Needed × Fuel Price
Fuel Needed = (Distanceₖₘ) / (Fuel Efficiency₍km / L))
Tire Cost₍per km) = (New Tire Cost + Retread Cost + Service Cost) / (Total Kilometers)
  • Total Cost is the full trip cost, including distance-based cost and fixed fees.
  • Distancekm is the trip distance in kilometers.
  • Rateper km is the base charge for each kilometer.
  • Fixed Fees include tolls, parking, loading fees, or other flat charges.
  • Effective Rateper km is the final average cost per kilometer after fixed fees are included.
  • Fuel Needed is the amount of fuel required for the trip.
  • Fuel Price is the price per liter, or a converted price from gallons.
  • Total Kilometers is the distance covered by the tire investment.

Trip Rate mode calculates total cost, rate, or distance when you enter the other needed values. It also shows the effective rate per kilometer and per mile.

Fuel Cost mode estimates fuel needed, fuel cost, total cost, and effective rate. It supports km/L, L/100km, US mpg, and Imperial mpg.

Tire Cost mode divides total tire investment by total kilometers to find tire cost per kilometer.

Common Unit Conversions For Per Km Costs

Conversion Formula Use
Miles to kilometers miles × 1.609344 Converts trip distance to km.
Kilometers to miles km ÷ 1.609344 Shows the equivalent cost per mile.
Rate per mile to rate per km rate per mile ÷ 1.609344 Compares mile-based and km-based rates.
Rate per km to rate per mile rate per km × 1.609344 Converts a km rate to a mile rate.

Costs Commonly Included In A Rate Per Km

Cost type Usually variable or fixed? Where to enter it
Fuel Variable Use Fuel Cost mode.
Tolls and parking Fixed Enter as fixed fees.
Tires Variable over long distance Use Tire Cost mode.
Loading or service fee Fixed Enter as fixed fees.

Examples

Example 1: Calculate total trip cost

You drive 250 km at a base rate of $0.80 per km. You also pay $15 in tolls.

Total cost = 250 × 0.80 + 15

Total cost = $215.00

Effective rate = 215 ÷ 250 = $0.86 per km

Example 2: Calculate fuel cost per km

You drive 300 km. Your vehicle gets 12 km/L. Fuel costs $1.60 per liter. There are no fixed fees.

Fuel needed = 300 ÷ 12 = 25 L

Fuel cost = 25 × 1.60 = $40.00

Effective rate = 40 ÷ 300 = $0.13 per km

FAQ

What is rate per km?

Rate per km is the cost for each kilometer traveled. If your trip costs $100 and the distance is 200 km, the rate is $0.50 per km. If the trip includes fixed fees, the effective rate per km may be higher than the base driving rate.

What is the difference between base rate and effective rate?

The base rate is the amount charged for each kilometer before fixed fees. The effective rate includes the full trip cost divided by distance. Use the effective rate when you want the real average cost per kilometer.

Should tolls and parking be included in the rate per km?

Include tolls, parking, and other fixed fees if you want the total trip cost spread across the full distance. Leave them out if you only want the vehicle running cost or base transport rate.