Percentage Calculator
A little math. A lot less effort.
Resize an image. Run the numbers. Clean up your text.
Useful tools for the little things that get in your way.
Calendar age, elapsed days and your next birthday.
Add days, subtract days, or compare two dates.
Convert length, mass, volume and eight more measures.
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Monthly loan payments with a repayment schedule.
Project regular monthly contributions with clear assumptions.
See how principal grows with periodic compounding.
Calculate interest without compounding.
Add or extract GST with CGST/SGST or IGST breakdown.
Add or extract a tax rate you specify.
Compare profit margin and markup.
Set a selling price from cost and markup.
Find how many units cover your fixed costs.
Invoices, quotations and receipts with local PDF export.
Indian GST fields, line taxes and a reviewed PDF preview.
Find percentages, without the mental math.
Words, characters, and bytes at a glance.
Set new dimensions. Keep the right proportions.
Turn messy JSON into something readable.
Crop your signature. Set dimensions. Check readability.
Meet a file size limit. Verify every byte.
Reduce JPG size with adjustable quality.
See what you save and what you pay.
Calculate the gap between two dates.
Convert Celsius, Fahrenheit, and Kelvin.
Switch between upper and lowercase.
Clean up your lists in one click.
Encode and decode URL components.
Combine documents into one tidy PDF.
Keep just the pages you need.
Bring your images together in a document.
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The current tools process inputs in your browser. No account is needed; files are handled in the browser.
Compare profit margin and markup.
Enter cost and selling price, then compare gross profit, margin and markup. Export CSV if needed.
Cost 80 and selling price 100 gives profit 20, margin 20% and markup 25%.
Margin uses selling price as denominator; markup uses cost. Zero-cost markup is undefined. No overhead, tax or net-profit accounting.