Bases, units, timezones, and timestamps.
Numerical conversions creep into every project: a Unix timestamp in a log, a hex color in a design token, a binary mask in a permissions calculation, a meeting time across timezones. Epoch Converter turns Unix seconds into ISO 8601 (and back). Timezone Converter walks a moment through any IANA zone. Number Base does decimal/binary/octal/hex with bitwise operators. CSS Unit Converter handles px, rem, em, %, vw, vh — the inputs designers leave you to figure out. All run instantly without an internet roundtrip.
Convert between Unix timestamps and human-readable dates.
Convert between units of length, weight, temperature, and data size.
Convert numbers between decimal, binary, hexadecimal, and octal.
Convert between px, rem, em, vh, and vw with configurable base size.
Convert a date/time across multiple timezones at once. All client-side.
Yes, by deferring to the IANA zone you select.
Rem scales with user font size; px doesn't. Better for accessibility.