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Exact pixel size, an exact KB range — including the minimum, which is what actually gets uploads rejected and which almost every other tool ignores. Plus 115 free tools to merge, compress, and convert PDFs, photos, and documents. All in your browser; nothing is ever uploaded.
Fix a photo for an upload form →Free Math Tools & Calculators
Calculators and math utilities that give you the answer instantly, computed right in your browser.
- CalculatorEvaluate a simple arithmetic expression (+, -, *, /, parentheses).
- Loan / EMI calculatorEstimate the monthly payment on a fixed-rate loan.
- Compound interest calculatorProject how a principal grows with compound interest over time.
- Tip calculatorSplit a bill with tip across a group.
- Discount calculatorWork out the sale price after a percentage discount.