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CalcIsland

Finance calculators that show the formula and the source

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About CalcIsland

CalcIsland is a free set of finance calculators for tax, retirement, investing, mortgages, and currency. Enter your numbers and get results instantly, with no sign-up. Every calculator shows its formula and assumptions, so you can see where the numbers come from. Region tools cover Hong Kong, the US, the UK, and Japan.

Key features

Formula and assumptions shown on every calculator
Free to use, no sign-up
Tax, retirement, mortgage, and currency tools

Real Talkpizza.txt

Hi! Quick story about pizza and founders.

Our Premium pass costs $19. That's one large pizza.

You know what happens after you eat a large pizza? Nothing. It's gone. Maybe some regret.

But $19 on Premium? Your product gets a permanent dofollow backlink from a DR 73 directory. Featured on the homepage. A guaranteed tournament slot.

That listing stays there for years. The pizza? Gone in 20 minutes.

The price is identical. The value is not.

Launch your product, not your calories.

Get Premium — $19