km/L to L/100km

Convert km/L to L/100km instantly — with a table, typical fuel-economy values, and a live calculator.

1 km/L equals 100 L/100km.

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Result (L/100km)6.67 L/100km

Why this conversion is reciprocal

Consumption (L/100km) and efficiency (mpg, km/L) are reciprocals of each other: a higher mpg means a lower L/100km. Double the mpg and you halve the L/100km — so the conversion follows a hyperbola, not a straight line. Concretely: L/100km = 235.21 ÷ mpg (US).

km/L to L/100km table

km/LL/100km
5 km/L20 L/100km
8 km/L12.5 L/100km
10 km/L10 L/100km
12 km/L8.33 L/100km
15 km/L6.67 L/100km
18 km/L5.56 L/100km
20 km/L5 L/100km
22 km/L4.55 L/100km
25 km/L4 L/100km
28 km/L3.57 L/100km
30 km/L3.33 L/100km
35 km/L2.86 L/100km
40 km/L2.5 L/100km

L/100km to km/L (reverse)

L/100kmkm/L
2 L/100km50 km/L
3 L/100km33.33 km/L
4 L/100km25 km/L
5 L/100km20 km/L
6 L/100km16.67 km/L
7 L/100km14.29 km/L
8 L/100km12.5 km/L
9 L/100km11.11 km/L
10 L/100km10 km/L
12 L/100km8.33 km/L
15 L/100km6.67 km/L
18 L/100km5.56 km/L
20 L/100km5 km/L

Typical vehicles compared

Vehicle typekm/LL/100km
Efficient hybrid25 km/L4 L/100km
Small economy car20 km/L5 L/100km
Compact car15.38 km/L6.5 L/100km
Mid-size sedan12.5 km/L8 L/100km
Large SUV9.09 km/L11 L/100km
Thirsty pickup7.14 km/L14 L/100km

How it scales

1.66.411.316.120.9514233140km/L

From hybrid to pickup

km/L (km/L)L/100km (L/100km)
HybridSmall carCompactMid-sizeSUVPickup

Reference values in L/100km

4Hybrid5Small car6.5Compact8Mid-size11SUV14Pickup

mpg, L/100km, and km/L — the key fuel-economy units

L/100km is the standard figure across continental Europe and a consumption measure: lower is better. mpg (miles per gallon) is an efficiency measure: higher is better. Watch out — the US gallon (3.785 L) is smaller than the imperial UK gallon (4.546 L), so the same fuel economy reads about 20% higher in UK mpg. km/L is the efficiency form of L/100km, common across parts of Asia and Latin America.

Because mpg and L/100km are reciprocals, you can never turn one into the other with a fixed multiplier — you always divide by the value. For more pairs, use our fuel economy conversion hub.

Related conversions

Frequently asked questions

What is 1 km/L in L/100km?

1 km/L equals 100 L/100km.

How much is 15 km/L in L/100km?

15 km/L equals 6.67 L/100km.

Why isn't this conversion linear?

Consumption (L/100km) and efficiency (mpg, km/L) are reciprocals of each other: a higher mpg means a lower L/100km. If the mpg doubles, the L/100km halves — so there is no fixed multiplier; you divide by the value instead. That is why the curve is a hyperbola, not a straight line.

How are km/L and L/100km related?

km/L is the “efficiency” form (higher is better), and L/100km is the “consumption” form (lower is better). They are reciprocals through L/100km = 100 ÷ (km/L). So 20 km/L equals 5 L/100km, and 10 km/L equals 10 L/100km.

Where are these fuel-economy units used?

L/100km is the standard figure across continental Europe (lower is better). US mpg is used in the United States and imperial mpg in the United Kingdom — both express miles per gallon (higher is better) but use different-sized gallons. km/L is common across parts of Asia, Latin America, and Africa.

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