CalcYourFinance is a free library of finance calculators: payment-processor and marketplace seller fees (Stripe, PayPal, Etsy, eBay, Amazon and more) plus core money math (EMI, SIP, FD, RD, GST, compound interest, loan, salary, percentage). Every fee is verified against the platform's official page and dated, results show in your own currency automatically, and there's no signup.
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Maker
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Hi Product Hunt 👋 I'm Deep, the maker.
CalcYourFinance started from a small, recurring annoyance: every time I took a payment or sold something, I had to hunt down what the platform actually takes — Stripe's rate here, Etsy's fee there, a surcharge for foreign cards, GST on top — and the numbers were always slightly stale or buried in a help doc. The everyday money math (EMI, SIP, FD, compound interest) was just as scattered across a dozen ad-choked sites.
So I built the tool I wished existed: one fast, honest library of ~60 calculators for payment & marketplace seller fees (Stripe, PayPal, Etsy, eBay, Amazon, Shopify…) and core personal finance (EMI, SIP, FD, GST, compound interest, loan, and more).
The thing I care about most is that the number is right:
• Every fee is pulled from the platform's official page and stamped with a "last verified" date, shown on the calculator.
• The math behind each tool is unit-tested, so results are reproducible.
• Results show in your own currency automatically, and most fee tools have a reverse mode ("what do I charge to receive exactly ₹X / $X after fees?").
• 100% free, no signup, runs entirely in your browser — your numbers never leave your device.
I'd genuinely love your feedback, and if there's a platform or calculator you wish existed, tell me and I'll build it. What fee trips you up the most?
Thanks for checking it out 🙏
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Would love to see a side-by-side comparison mode where you can pick two processors or marketplaces and see the fees stacked against each other for the same transaction amount, makes it way easier to decide which one to use.
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Maker
@avcarnecde70934 Already have some comparisons for the fee processors in, working on the comparison pages for marketplace.
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The dated source citations next to each fee calculation are a really thoughtful touch, makes me trust the numbers way more than typical calculator sites that just throw results at you.
Would love to see a side-by-side comparison mode where you can pick two processors or marketplaces and see the fees stacked against each other for the same transaction amount, makes it way easier to decide which one to use.
@avcarnecde70934 Already have some comparisons for the fee processors in, working on the comparison pages for marketplace.
The dated source citations next to each fee calculation are a really thoughtful touch, makes me trust the numbers way more than typical calculator sites that just throw results at you.