Financial Toolbelt

Powerful calculators that help you improve your finances

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#3 Product of the DayMarch 25, 2018

Financial Toolbelt is a site dedicated to helping people understand and improve their finances.

We are launching with 3 calculators at the beginning for some of the most common questions in personal finance: retirement, starting a side business, and credit card debt. We are working on more tools and welcome all feedback & feature requests!


  • 1149423
    Sam CampbellSeeing the future and those who make it

    Simple, yet powerful calculators for retirement and more. Very easy to use at any level of expertise.


    None yet

    Hope more people can discover and use this tool!

    Sam Campbell has used this product for one day.
  • Pros: 

    Incredibly easy to use, Visually showed me graphs instead of just bland tables, Great interface


    A couple minor glitches which have already improved since I've been using the toolbelt.

    Keep us posted in your sign up on when new tools are launched. Have been using this as my main side hustle calculator for over a month now.

    Dan Swendsen has used this product for one month.


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Stephen Johnson@stephenfjohnson · Web Developer
Been using FT for a while now and have been really motivated by the side hustle calculator. (Showing me that if I just charge a little bit more the amount of user onboarding goes way down.) Also on my quest for FIRE (Financial Independence Early Retirement), it is always good for me to run the numbers again anytime my income changes!
Austin GrandtMaker@austingrandt · Maker & Traveler
@stephenfjohnson Thanks for being an early tester and the kind words Stephen. Really have appreciated your feedback shaping FT so far!
Austin GrandtMaker@austingrandt · Maker & Traveler
Hey PH! I built Financial Toolbelt to help people understand their finances better. Most of the existing calculators I have tried were missing some features (and design) that I wanted so I decided to build my own. My #1 goal is to hopefully make it easier to make informed decisions about how to improve your finances. I am sure there are some bugs and other things I need to improve so please let me know if you see anything. I am also building new tools/calculators/resources and would love some input from the community if they think the site is missing something!
Ayush Chandra@ayush_chandra · Research Intern & Tech Evangelist
Great job !! 😊
Sam Campbell@campbellcapital · Seeing the future and those who make it
Love the retirement calculator. Easy to fill in the basic details, with the flexibility to adjust some advanced items. Well done!
Austin GrandtMaker@austingrandt · Maker & Traveler
@campbellcapital thanks for checking it out! If there's anything you would like to add/change let me know.
Sam Campbell@campbellcapital · Seeing the future and those who make it
@austingrandt One area I'd love to see more of in retirement planning is the issue of taxes (before and in retirement). Specifically, the optimal way to allocate annual savings between pre- and post-tax options. This area has quite a few assumptions, but would be nice to play around with the 'advanced items'.
Damien Tsnkff@tsnkff · Front-End. Sometimes I design
Absolutely love it. Wanted to create something like that taking a lot of parameters into account. (I only started a quick compounded growth calculator, but yours is way more advanced) If you need contributors, I'd be happy to help :)
Austin GrandtMaker@austingrandt · Maker & Traveler
@tsnkff Thanks for the offer and for checking out the calculators! Still trying to figure out what next steps are for this thing but will let you know!