Everyday Utilities

Calculate dates, convert cooking measurements, estimate electricity usage, and work with percentages and scannable codes.

Tools in this collection

Age Calculator — Calculate calendar age, elapsed days, and the next birthday from local date values.
Barcode Generator — Create and download customizable CODE128, EAN, UPC, CODE39, and ITF-14 barcodes.
Cooking Measurement Converter — Convert cooking cups, spoons, fluid ounces, millilitres, grams, and pounds using explicit measure sizes, without guessing ingredient density.
Date Difference Calculator — Calculate calendar and elapsed differences between two date-only values.
Electricity Cost Calculator — Estimate appliance electricity use and running costs from watts, daily hours, days, and your own kWh rate, without assuming a local tariff.
Percentage Calculator — Calculate percentages, increases, decreases, and differences for everyday decisions.
QR Code Generator — Create customizable QR codes for websites, text, contact details, messaging, and Wi-Fi networks.
Unit Converter — Convert common length, mass, temperature, area, volume, and speed units locally.
Working Days Calculator — Count working, weekend, and manually excluded days using configurable calendars.

Date tools use calendar dates without time-of-day values, while the unit converter applies fixed local conversion formulas.

Working-day results use the weekend and manual exclusions you select; they do not load an official holiday calendar.

Money & Finance — Plan borrowing, saving, pricing, and everyday money decisions.
QR & Barcode — Generate scannable QR codes and standard product barcodes.
Travel & Transport — Estimate fuel, EV charging, vehicle costs, and trip time, and convert travel units.