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2on
2on is more than just tools and calculators. Soon you'll be able to create personal dashboards, track finances, monitor creators, save quick links, and manage notes in one place.
Most Commonly Used Calculators
Percentage Calculator
Work out a percentage of a number, what share one number is of another, the change between two values, and adding or removing a percentage.
Tip Calculator
Work out the tip, the total and what each person owes. Rounding up adjusts the tip rather than the total, which is what actually happens at the table.
Hours Worked
Add start and end times for each day, subtract breaks, and get the week in hours and minutes, in decimal, and in money. Night shifts too.
VAT Calculator
Work out the tax on a price at any rate, in either direction: add VAT to a net figure or pull it back out of a gross one.
Most Commonly Used Tools
Slug Generator
Turn any headline into a clean URL slug. German ü becomes ue, Turkish ü becomes u, Cyrillic is transliterated — you pick the language, line by line.
Color Converter
Convert a color between HEX, RGB and HSL, build a scale of shades, and check the contrast ratio against white, black or any second color.
Password Generator
Generate passwords in your browser using your device's cryptographic random source, and see real strength in bits of entropy, not a coloured bar.
Unit Converter
Convert length, weight, temperature, volume, area, speed, data size and time. Exact definitions, no rounded factors, and every unit in the group at once.