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Products that do what A FIRE calculator that verifies or determines your retirement number does

Most retirement calculators either oversimplify things or ask you to link your accounts so they can make money off your data. I wanted something that actually helped me see if I was on track without handing over a bank login, so I built RetireNumber. It's a privacy-first retirement planner. You type in your own numbers. No account linking, no selling your data, no VC. Just me and a subscription. The engine does real math: Monte Carlo with 1,000 runs, historical backtesting to 1928 using Shiller's Yale data, tax-aware withdrawal strategies, and scenario comparison so you can try different…

  1. 1IC
  2. 2
    Retire74

    Take back $162,125 you are losing in 401(k) fees

    2019

  3. 3AP

    Hi HN, I built Firenum because most FIRE calculators I found were either too simplistic or required uploading my entire financial life to a third-party server. I wanted a comprehensive suite that could model more than just the 4% rule. This tool handles Coast, Lean, Fat, and Barista FIRE, but more importantly, it lets you model 'what-if' scenarios like market crashes or major life events to see how they impact your timeline. Key features: -> Privacy-First: No signup required. All calculations and data persistence happen in your local storage. Nothing is sent to a backend. -> Scenario…

    Feb 2026 · firenum.com

  4. 4RC

    2020 · lunchmodel.com

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    Know your financial situation and when you can retire

    2019

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    A complete retirement planner covering accounts, taxes, pensions, withdrawals, and life events, stress-tested against thousands of simulations drawn from over a century of real market history. Start with a free quick check, no sign-up required.

    11d ago · foresightplanner.com

  7. 7MA

    The calculator quickly shows you how long your nest egg will last, given a constant withdrawal. It automatically shows you a safe withdrawal rule to have your capital last forever.

    2024 · myfire.app

  8. 8

    Know the exact year you can stop working

    Aug 2026 · smartpixelstudio24.gumroad.com

  9. 9TT

    Hi HN! I've been working on this calculator for some time now. It started off as a tool to help me do some retirement planning and I think it could be broadly useful to others as well. It's very generic, which is both good and bad. Good, because you are not beholden to the assumptions of the model, like in many other calculators. This also means that it’s not US centric. On the other hand, you do need a bit of financial planning knowledge to be able to use it effectively. There are many retirement calculators out there -- here's what I think The Tortoise does better than most: 1. An easy to…

    2022 · thetortoise.io

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    25 free calculators - your numbers never leave your browser

    Jul 2026 · moneycrunchlab.com

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    A digital retirement plan that works like a pension

    2018

  12. 12

    The FIRE calculator that doesn't ignore taxes

    Aug 2026 · krosos.com

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    Free calculators to plan your budget, debt, and FIRE goals

    Jul 2026

  14. 14

    The Privacy-First Expense Tracker. No Bank Login Required.

    Jul 2026 · spendkeep.com

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    Free calculators that make your money decisions simple

    11d ago · fincalwise.com

  16. 16WC
  17. 17FR

    You can adjust inputs and immediately see how the outcome changes. Results include clear success rates, cash-flow charts, and an “Under the Hood” view that shows exactly how the numbers are worked out.

    Nov 2025 · pulse-browser.com

  18. 18IE

    2018 · engaging-data.com

  19. 19IM

    Hi HN, I am a solopreneur in the evenings and a software engineer during the day. In the past, I have created lots of calculators for my web projects and freelancing friends. These were pretty basic, but users always welcomed them. I also used currently available builders, but the problem was that they were either slow, broke on mobile devices, had nonsense page view limits, or were expensive. Some even ticked all those boxes. So I have decided to create my own, with a simple interface, and called it Creative Widgets (if it ever takes off, I plan to add more exciting stuff like charts, etc,…

    2024 · creativewidgets.io

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    The best web calculator for wealth estimation

    6d ago · mynetworthcalculator.com

  21. 21

    Free Personal Finance Calculators

    Jul 2026 · duckdollar.com

  22. 22

    Math simplified

    16d ago · firemathlab.com

  23. 23AM

    Hi HN, Today I'm launching the Net Worth Tracker by Flow Finance, a beautiful and minimalist Excel template that allows individuals to track their assets, liabilities, income, and spending on a monthly basis. The focus of this template is understanding long-term trends in the incoming and outgoing expenses for an individual—always with a focus on maximising insights while minimising user inputs. This project was created because the alternatives, frankly, are completely overwhelming. A friend of mine introduced me to the FIRE Movement and, after doing deep dives through Reddit, I tried to…

    2023 · getflow.finance

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    Free Online Financial Calculators

    25d ago · finance.webtools3.com

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