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[Published: July 3, 2026 | Last updated: July 3, 2026]
The TechsGenius Retirement Savings Calculator is a free tool that projects how much money you will have at retirement based on your current savings, monthly contributions, and expected growth rate.
It answers the two questions everyone asks: "Will I have enough?" and "How much should I save each month?"
The projection uses compound growth, which means early contributions matter far more than late ones.
A common planning benchmark is saving 10-15% of income for retirement, adjusted up if you start late.
The tool is free at techsgenius.org and requires no account to use.
The TechsGenius Retirement Savings Calculator is a free browser tool that estimates the size of your retirement fund at a target age. You enter your current age, planned retirement age, existing savings, monthly contribution, and an expected annual return, and the calculator projects your final balance.
The tool turns an abstract worry, "Am I saving enough?", into a concrete number you can act on. If the projection falls short of your goal, you can adjust the monthly contribution or retirement age and immediately see the new outcome.
It sits in the TechsGenius free tools library next to the Take-Home Pay and Net Worth calculators, which makes it easy to find spare money in your paycheck and track total progress in one place.
The calculator applies compound growth to your starting balance and every future contribution, month by month, until your retirement date.
The inputs work like this:
Current age and retirement age set the growth window. A 30-year-old retiring at 65 has 420 monthly compounding periods.
Current savings is your starting balance across retirement accounts.
Monthly contribution is what you add going forward, including any employer match.
Expected annual return is the growth rate applied to the balance. Long-term diversified stock portfolios have historically averaged around 7% per year after inflation (Damodaran, NYU Stern, 2025), though past returns never guarantee future ones.
Compound growth works like a snowball rolling downhill. The snowball picks up snow, and the new snow itself picks up more snow. Your returns earn returns, which is why the final decade of a 35-year plan often adds more money than the first two decades combined.
Starting early beats saving more later because compounding rewards time above contribution size. Money invested at 25 has a decade more doubling time than money invested at 35, and that decade is the most powerful one in the sequence.
Consider two savers using the same 7% annual return assumption:
The late saver contributes $36,000 more out of pocket and still retires with less. Run your own numbers in the calculator; the gap between "start now" and "start in five years" is usually the most motivating output the tool produces.
A widely used benchmark is saving 10-15% of gross income for retirement, starting in your 20s. Fidelity's savings framework suggests having roughly 1x your salary saved by 30, 3x by 40, 6x by 50, and 10x by retirement at 67 (Fidelity, 2024).
Benchmarks are starting points, not verdicts. Your target depends on when you start, whether an employer matches contributions, your expected lifestyle, and other income sources such as pensions.
The calculator handles this personalization directly. Instead of asking whether 12% is the "right" percentage, enter your actual numbers and check whether the projected balance covers your expected retirement spending. Adjust one input at a time until it does.
Using an optimistic return rate: Plugging in 12% growth makes any plan look safe. Use a conservative long-term figure and treat anything better as a bonus.
Ignoring inflation: A million dollars in 30 years buys far less than it does today. Use an inflation-adjusted return rate so the output is in today's purchasing power.
Skipping the employer match: Matched contributions are an immediate 100% return on the matched amount. Always include them in your monthly contribution figure.
Setting and forgetting: Salaries, expenses, and goals change. Re-run the projection once a year and after any major life event.
It is a free online tool that projects your retirement balance from five inputs: current age, retirement age, current savings, monthly contribution, and expected annual return.
It compounds your starting balance and every monthly contribution at your chosen growth rate until your retirement date, then displays the projected total.
A conservative long-term figure is safest. Diversified stock portfolios have historically averaged around 7% annually after inflation (Damodaran, NYU Stern, 2025), so many planners model 5-7% to stay cautious.
One common rule targets 10x your final salary by age 67 (Fidelity, 2024). Your personal number depends on expected spending, other income, and retirement age, which is exactly what the calculator lets you test.
Yes. Like every tool in the TechsGenius library, it is free and runs in the browser. An optional free account lets you save scenarios to your dashboard.
The calculator converts five simple inputs into a concrete retirement projection.
Time in the market is the strongest variable; starting early outperforms saving harder later.
Model with conservative, inflation-adjusted returns to avoid false confidence.
Revisit the projection yearly so your plan tracks your real life, not a snapshot from years ago.
Kaysar Kobir is the founder of TechsGenius and a digital marketing expert with 8+ years of experience helping businesses grow through SEO, PPC, and AI-powered marketing strategies. He has worked with clients across 30+ countries.