When it comes to building long-term wealth on the ASX, few strategies are more reliable than keeping it simple, diversified, and consistent.

The best investors aren't constantly chasing the next big thing — they're quietly compounding returns in the background with well-chosen, long-term investments.

And for many Australians, exchange traded funds (ETFs) offer a low-cost, hands-off way to do exactly that.

With that in mind, here are three ASX ETFs that could be quality long term picks for investors today:

Betashares Nasdaq 100 ETF (ASX: NDQ)

If you want to own the future, the Nasdaq 100 is one of the best places to be.

This ASX ETF gives you exposure to 100 of the largest non-financial companies listed on the Nasdaq Stock Exchange. This includes household names like Apple (NASDAQ: AAPL), Microsoft (NASDAQ: MSFT), Amazon (NASDAQ: AMZN) and NVIDIA (NASDAQ: NVDA).

These are some of the most innovative businesses on the planet — and they're powering megatrends like cloud computing, artificial intelligence, eCommerce, and digital media. While this fund can be more volatile than a broad index, its long-term track record of growth has made it one of the top-performing ETFs on the ASX over the past decade. Given the quality of its holdings, it wouldn't be surprising if the next decade was equally positive.

iShares Global Consumer Staples ETF (ASX: IXI)

Growth is great, but so is resilience — and that's exactly what the iShares Global Consumer Staples ETF brings to the table.

This ASX ETF gives you exposure to the world's biggest consumer staples companies. Think Nestlé (SWX: NESN), Procter & Gamble (NYSE: PG), Coca-Cola (NYSE: KO) and Walmart (NYSE: WMT). These are the companies people turn to no matter what the economy is doing — because they make the things we all use every day.

It isn't the flashiest ETF, but that's the point. It is designed to weather volatility and provide steady, defensive returns, making it a great anchor for any long-term portfolio.

Betashares Diversified All Growth ETF (ASX: DHHF)

Finally, if you're looking for a set-and-forget investment, the Betashares Diversified All Growth ETF could be one to consider buying.

This ASX ETF is designed to be a complete growth portfolio in a single trade. It blends exposure to over 9,000 global stocks, including Australian large caps, U.S. tech giants, European industrials, and emerging market leaders. It even includes small- and mid-cap stocks for added diversification.

As Betashares notes, this "ETF has been designed as a complete all-in-one stock market solution for accumulators who recognise that time in the market is the key to achieving their long-term investment goals."

For anyone who wants to build wealth over the next 10–20 years without overthinking it, this fund could be the way to do it.