Useful before you install

Free calculators and practical tool guides.

Fast answers for common jobs, with transparent formulas and no values sent to our servers.

Unit ConverterConvert common length and distance units without searching through a conversion table.Currency ConverterCalculate a currency conversion with an exchange rate from your bank, card provider or current market source.Tip Split CalculatorWork out the total tip and a fair per-person amount without passing a phone around the table.Discount CalculatorSee the final price and saving before you reach the checkout.Unit Price CalculatorTurn different pack sizes into one comparable number and spot the genuinely better buy.VAT CalculatorCalculate VAT and a VAT-inclusive total from a net amount and rate.Paint CalculatorEstimate how much paint to buy before starting a room or project.Tile CalculatorCalculate a practical tile quantity, including a configurable allowance for cuts and breakage.Concrete CalculatorEstimate the volume of a simple rectangular concrete pour before ordering material.Stair Riser CalculatorGet a first-pass riser count for planning a straight stair layout.Fuel Cost CalculatorBudget a road trip or compare journeys using your vehicle’s real-world fuel consumption.BMI CalculatorCalculate the standard metric BMI number from height and weight.Running Pace CalculatorTurn a finish time and distance into an average pace per kilometre.Recipe ScalerResize one ingredient accurately when a recipe serves too many—or not enough—people.Coffee Ratio CalculatorFind a repeatable coffee dose for pour-over, filter or another weight-based brew.Secure Password GeneratorCreate a strong random password locally. The generated value never leaves this page.QR Code Generator for iPhoneTurn a link or short piece of text into a scannable code from the same app as your other everyday tools.Private Document Scanner for iPhoneCapture paper, recognise text and prepare a useful PDF without creating an account for another scanner service.PDF Tools for iPhoneHandle the small PDF jobs that otherwise send you searching for a website or another subscription.File Converter for iPhoneMove a file into the format the next app, person or workflow actually needs.