About NiftyNeeds
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. Read more about the site.
What you'll find here
Money and shopping
Work out a restaurant tip and split the bill with the tip calculator, see the sale price and final total after tax with the discount calculator, or solve any percent question with the percentage calculator.
School, work and health
Estimate your grade point average with the GPA calculator, check an essay length with the word counter, do trig and logarithms on the scientific calculator, or get a screening number with the BMI calculator.
Dates and time
Count days with the date calculator, find an exact age with the age calculator, watch a live countdown to any event, or compare times across cities with the time zone converter.
Kitchen
Turn cups into grams by ingredient with the cooking converter, and resize a recipe for any number of servings with the recipe scaler.
Everyday utilities
Convert length, weight, volume and temperature with the unit converter, create a strong random password with the password generator, or turn a link into a scannable code with the QR code generator.
Frequently asked questions
Are the tools really free?
Yes. There's nothing to sign up for or download. The site is supported by advertising.
Is what I type kept private?
The calculations run in your browser, so the numbers, text and dates you enter into the tools aren't sent to us. The privacy policy explains the cookies used for advertising.
How accurate are the results?
The tools use standard formulas and are meant for everyday, general-information use. For anything important, especially medical, legal, financial or safety-related decisions, double-check the result and consult a qualified professional.