Australian shares are expected to open flat despite gains on Wall Street overnight.

The SPI200 futures contract was down 1 point, or 0.02 per cent, at 6,341.0 at 0700 AEST, suggesting a little-changed start for the benchmark S&P/ASX200 on Tuesday.

On Wall Street, the Dow Jones Industrial Average was up 0.04 per cent, the S&P 500 was up 0.11 per cent and the tech-heavy Nasdaq Composite was up 0.19 per cent.

The Aussie dollar is buying 70.56 US cents from 70.55 US cents on Monday.