Mars is larger than Pluto. Mars is the second-smallest major planet, the only smaller one being Mercury (which is also much larger than Pluto).
(see related link)
Bigger in what sense, mass or radius?
The mean radius ratio is 300000000 km/1150 km, or about 260,000 times bigger.The mass ratio is 3.1 x 1031 kg/1.3 x 1022 kg, or about 2,400,000,000 times bigger.
The Earth and Mars.
Earth is about 2 times the size of Mars and yet, the surface area of Mars is about the same as the surface area for land here on Earth!!!
Hope it helped,
Syd=)