Free Calculators Tools

Everyday math, units, percentages & conversions.

Online CalculatorA fast, clean calculator for everyday math.Percentage CalculatorCalculate percentages, increases, decreases and differences.Date CalculatorCount days between two dates or add and subtract time.Unit ConverterConvert length, weight, temperature, volume and speed.File Size ConverterConvert between bytes, KB, MB, GB and TB.Currency ConverterConvert between world currencies with up-to-date rates.Will AI Replace My Job? CalculatorSee how exposed your job is to AI, task-level, with what stays human.Group Expense SplitterSplit trip or dinner costs, see who owes whom, and share the tab by link.AC BTU & Tonnage CalculatorWork out the BTU and AC tonnage a room needs from its size, sun, climate and use.Zakat CalculatorAdd your assets and debts to see if you owe zakat and exactly how much.Tile & Flooring CalculatorWork out how many tiles and boxes a floor needs, with wastage and cost.

About Calculators tools

This is everyday math without the mental gymnastics. Etoolio's calculators handle the sums people actually need — percentages, tips and discounts, unit and currency conversions, loan and mortgage repayments, dates and durations — and show the working, not just a number. Each one runs instantly in your browser as you type, with no rounding surprises and no waiting on a server. Whether you're splitting a bill, comparing prices across units, planning repayments, or converting measurements for a recipe or a project, you get a precise result you can trust and copy in one click. They're free, need no account, and work the same on your phone as on your desktop, so the right answer is always a tab away.

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