Everyday

Units, percentages and conversions that come up constantly.

• Random Number Generator06·01Random numbers in any range from the browser's cryptographic generator, modulo bias removed — one number, a list, or a raffle draw without repeats.
• Percentage Calculator06·02Solve every common percentage question — percent of, percent change, and what percent X is of Y.
• Unit Converter06·03Convert length, weight, temperature, volume, area, speed, fuel economy and eight more categories between metric and imperial.
• QR Code Generator06·04Create static QR codes for links, WiFi, contacts, email, SMS or a map location. Free forever, works offline, no tracking or expiry.
• Fuel Cost Calculator06·05Litres per 100 km from a fill-up, and what any trip will cost at today's price — the two numbers every driver actually wants.
• Roman Numerals Converter06·06Numbers to Roman numerals and back, 1 to 3999 — strict about the canonical forms, so IIII is refused rather than taught.
• Random Name Picker06·07Pick a winner or shuffle a list with crypto-grade randomness and an unbiased draw — paste names, draw one or several, in your tab where nobody can rig it.