Category
Calculators & Generators
Everyday maths, passwords and QR codes
Percentage, age and BMI calculators, unit conversion, random numbers, strong password generation, QR codes and colour format conversion.
At a glance
10tools in this hub
10 of 10 run entirely in your browser
Free · no sign-up · no watermark
All Calculators tools
Every tool in calculators & generators
Ordered as they appear in the library. Each opens on its own page with instructions, FAQs and related tools.
Percentage Calculator
Calculators
Work out percentages, increases, decreases and reverse percentages.
Instant · no upload
Age Calculator
Calculators
Calculate an exact age in years, months and days between two dates.
Instant · no upload
Date Difference Calculator
Calculators
Find the exact gap between two dates in days, weeks, months and years.
Instant · no upload
BMI Calculator
Calculators
Calculate body mass index from height and weight, metric or imperial.
Instant · no upload
Unit Converter
Calculators
Convert length, weight, temperature, volume, area, speed, data and time.
Instant · no upload
Password Generator
Calculators
Create strong, cryptographically random passwords entirely on your device.
Instant · no upload
Random Number Generator
Calculators
Generate random integers, decimals or lists with no repeats.
Instant · no upload
QR Code Generator
Calculators
Create QR codes for URLs, text, Wi-Fi, contacts and more.
Instant · no upload
Colour Converter
Calculators
Convert between HEX, RGB, HSL, HSV and CMYK with a live preview.
Instant · no upload
Timezone Converter
Calculators
Convert a time between any two timezones and see a full overlap chart.
Instant · no upload
About this category
Calculators & Generators
A mixed drawer of the things people search for daily. The generators are the privacy-sensitive ones: passwords and other secrets are produced with your browser's cryptographic random source and shown on screen without a single network request, which is meaningfully safer than a generator that has to ask a server for entropy.
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