If you're looking for exchange-traded funds (ETFs) to buy and have $4,000 to invest, then you might want to consider the four ASX ETFs listed below.

Each offers exposure to different high-growth themes and markets, potentially making them strong options for Aussie investors in 2025. Here's what you need to know about them:

BetaShares Crypto Innovators ETF (ASX: CRYP)

For those who believe in the long-term potential of cryptocurrencies but don't want the hassle of buying and storing digital assets, the BetaShares Crypto Innovators ETF could be worth considering.

This fund provides exposure to a range of companies that are at the forefront of the crypto industry. This includes pure-play crypto firms, businesses holding at least 75% of their balance sheet in crypto assets, and diversified companies with significant crypto-focused operations. If the cryptocurrency market experiences a boom, these companies are well-positioned to benefit.

BetaShares Diversified All Growth ETF (ASX: DHHF)

The BetaShares Diversified All Growth ETF could be a great option for investors looking to build a long-term, growth-focused portfolio. This ASX ETF gives exposure to around 8,000 large, mid, and small-cap stocks from Australia, the United States, developed markets, and emerging markets.

BetaShares has previously highlighted this fund as a high-growth option, making it suitable for investors with a higher tolerance for risk. With a globally diversified portfolio, this ETF could deliver strong returns over the years ahead.

The fund manager recently named it as a buy and notes that its "all-cap, all-world" share portfolio has the potential for high growth over the long term.

BetaShares Cloud Computing ETF (ASX: CLDD)

Cloud computing has been one of the fastest-growing areas of the technology sector, and the BetaShares Cloud Computing ETF offers investors exposure to this booming industry.

This ETF invests in a portfolio of companies leading the charge in cloud computing, including well-known names like Shopify and Zoom.

BetaShares has named it as a buy and pointed out that much of the world's digital data and software applications are still managed outside the cloud, meaning there's significant growth potential ahead. As more businesses migrate their operations online, cloud computing leaders stand to benefit substantially.

BetaShares Global Quality Leaders ETF (ASX: QLTY)

If you are wanting to make long term investments, then buying high-quality companies is a time-tested strategy. The good news is that the BetaShares Global Quality Leaders ETF makes this easy by bundling together around 150 of the highest-quality companies from across the globe based on strict financial and operational metrics.

This ETF has been named as a buy by BetaShares' chief economist, David Bassanese, and is designed to provide investors with exposure to businesses that have strong balance sheets, stable earnings, and sustainable competitive advantages.