Color Mixer
Mix two colors – with a stepless mixing ratio and live preview, output as hex and RGB. Runs in the browser.
Mix two colors – with a stepless mixing ratio and live preview, output as hex and RGB. Runs in the browser.
Calculate aspect ratios – the missing width/height for a ratio (e.g. 16:9) or the ratio of a resolution. In the browser.
Calculate wealth with compound interest – from principal, rate, term and monthly contribution. With interest share. In the browser.
Generate checksums – MD5, SHA-1, SHA-256, SHA-384 and SHA-512, live from any text. Runs entirely in the browser.
Calculate the tip and split the bill – amount, percentage and number of people, with amount per person. In the browser.
Convert text to binary and back – 8 bits per character (UTF-8). Runs entirely in the browser, nothing is sent.
Convert Arabic numbers to Roman numerals and back – from 1 to 3999, with validity check. Runs in the browser.
Translate text to Morse code and back – letters, digits and punctuation per international standard. In the browser.
Check credit card or other numbers via the Luhn algorithm – including card type detection. Runs locally in the browser.
Validate an IBAN – via the checksum per ISO 7064 (modulo 97). Runs entirely in the browser, nothing is sent.
Turn a URL list into an XML sitemap – with changefreq and priority, per Sitemap protocol 0.9. Runs in the browser.
Sort text lines, remove duplicates, reverse, trim and change case – all in one tool. In the browser.