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Free, easy-to-use calculators for finance, business, and everyday math. Enter your numbers and get a clear answer in seconds.
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Business & finance tools
Net Present Value (NPV)
Discount future project cash flows to today and assess an investment at your required return.
Profit & Pricing
Work out profit, markup, and margin to set a price with confidence.
Break-even
Find the sales volume that covers your fixed and variable costs.
Growth
Calculate CAGR and growth rates across a chosen period.
Unit Economics
Understand customer acquisition cost, lifetime value, and their ratio.
Percentage
Calculate a percentage, percentage change, discounts, and more.
Built for clarity
Useful answers, explained simply
JCalc brings everyday math and financial planning tools into one straightforward place. Each calculator is designed to make inputs easy to understand and results quick to use.
Calculations run in your browser, and many tools include formula explanations and examples so you can see how the answer is worked out.