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Next week is National Retirement Planning Week. Okay, maybe you're not the kind of person who'll mark this august occasion by taking to the streets carrying pro 401(k) banners.

But given the stock market's erratic behavior lately, you may at least want to set aside some time to see where your retirement plans stands and what the likelihood is that you'll be able to fund a long and satisfying retirement.

Toward that end, here are two steps you can take — and two free online tools you can use — to properly assess your retirement strategy:

1. A Questionnaire to Fix Your Investment Mix

The latest Wells Fargo/Gallup Investor and Retirement Optimism Index found that more than half of investors weren't especially concerned about recent volatility in the stock market, while 60% said they still believe it's a good time to invest.

Hey, confidence is great, but when it comes to investing your hard-earned savings for retirement, you also want to be realistic.

This is not to suggest that a bear market is imminent — or that you should overhaul your investing strategy in anticipation of one. But considering some of the market's wild ups and downs of late and that this bull market is in its ninth year, it's only prudent to make sure your savings are invested in a way you'd be comfortable no matter which way stocks are headed.

Start by re-assessing your asset allocation, a move that's especially crucial if you haven't been periodically rebalancing throughout this long bull market.

You want to hold enough stocks to earn the returns you'll need to grow your nest egg over the long-term, but also enough in bonds to provide some downside protection so you don't bail out of equities in a severe downturn.

You can arrive at a reasonable stock/bond mix given your investing time horizon and appetite for risk—and see how various blends of stocks and bonds have performed in past market conditions—by completing Vanguard's free risk tolerance-asset allocation questionnaire.

While you're at it, take a few minutes to see if you own "bull market buys." These are speculative or gimmicky investments people tend to snap up on the spur of the moment during the euphoria of a rapidly rising market but that don't really fit into a coherent investing strategy.

If you don't know right off what specific role a particular mutual fund or ETF plays in your portfolio and you can't explain how your investing results would suffer without it, chances are you're better off without it.

2. A Calculator to Confirm That You're on Track

There's no doubt that the market's surge since the 2008 financial crisis has helped fatten retirement accounts. Witness the fact that Fidelity Investments recently reported a record number of 401(k) millionaires in the workplace retirement accounts it oversees.

But a large balance in and of itself doesn't guarantee a secure retirement. The real question is whether your nest egg will be able to generate enough income, combined with Social Security, to maintain your standard of living in retirement.

One way to answer that question is to go to T. Rowe Price's retirement income calculator. Enter such information as your age, salary, how much you already have saved and how much you're saving each year retirement, and the tool will estimate your chances of being able to retire on schedule with sufficient income.

If your probability of success is uncomfortably low — say, much below 80% — then you'll want to re-run the analysis to see how moves like saving more, investing differently and delaying retirement a year or two might improve your chances.

If you're already retired, the central issue is finding a level of spending that will allow you to live comfortably in retirement without exhausting your nest egg too soon. T. Rowe's retirement calculator can provide guidance on that score too, although instead of entering how much you're saving each year, you plug in the amount you intend to spend.

The tool will then determine if your nest egg will likely be able to support that level of spending throughout retirement or whether you'll need to make adjustments, such as cutting back on expenditures or revising your investing strategy.

The giant investment firm BlackRock has also just introduced a new calculator designed to help retirees between the ages of 63 and 95 easily gauge how much they can spend in retirement: the LifePath Spending Tool. There's some sophisticated number-crunching going on under the hood — essentially, BlackRock combines its forecast for market returns with assumptions about retirees' longevity to arrive at its spending estimates. But the tool itself is simple to use.

Enter your age and the amount you have saved in retirement accounts, and the tool not only provides spending recommendations for the current year but also estimates how much you can spend (and what your remaining account balance will be) each year to age 95. Since market conditions change over time, the idea is that you would re-visit the tool annually for updated spending estimates.

For now, the tool is available only to people whose retirement plans are overseen by BlackRock, and the projections assume a retirement portfolio of 40% stocks and 60% bonds.

BlackRock expects to make LifePath publicly available on its site later this year and eventually allow its spending projections to factor in Social Security as well as other portfolio mixes. And if and when that happens, this could be a third important tool to consider.

Walter Updegrave is the editor of If you have a question you would like Walter to answer online, send it to him at Follow Walter on Twitter at @RealDealRetire.

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