Free calculators and converters that just work — no sign-up, no download, no clutter.
Trig, logarithms, exponents, and memory functions.
ConverterCups, tablespoons, and ounces to grams — by ingredient.
ScalerResize any recipe to a different serving count.
DatesDays between dates, days until, add or subtract days.
CalculatorPercent of, percent change, and reverse percentages.
CalculatorTip amount, total, and split evenly by party size.
CalculatorBody mass index in metric or imperial units.
Text toolWords, characters, sentences, and reading time.
DatesExact age in years, months, and days.
ConverterLength, weight, volume, and temperature.
CalculatorSale price, savings, and total after tax.
GeneratorStrong random passwords, generated in-browser.
CalculatorWeighted grade point average by course.
GeneratorTurn any link or text into a QR code.
ConverterCompare a time across multiple cities.
DatesLive countdown to any date and time.
NiftyNeeds is a small, growing collection of free browser-based tools built to answer one quick question at a time — no account, no app to install, no ads blocking the tool itself. New calculators and converters get added over time as they're built.