Converters
Units, numbers and notation, converted both ways. 5 tools, all free and all running in your browser.
Ten categories of unit in one converter, with the six most useful alternatives shown alongside every result so you can sanity-check the answer without running a second conversion.
Cheques, contracts and invoices often require the amount in words as well as figures, because words are far harder to alter. Type the number and copy the sentence.
Type a number to get the numeral, or type a numeral to get the number — both fields work, and each one updates the other as you go.
Enter a value in any common base and see it in all the others simultaneously, along with how many bits it needs.
Draw numbers from a range for a raffle, a sample, a team split or a lottery line. Repeats can be turned off so the same number never appears twice.