Data size
1 B — 1 TB · log₁₀Decimal · ×1000
Binary · ×1024
Duration
1 ms — 1 y · log₁₀The human field reads 1h 30m, 90s, 2d 4h, 1:02:03 (h:m:s), 4:30 (m:s) — a bare number is seconds.
Unix time
epoch · 1970-01-01T00:00:00Z
Now
Number base
arbitrary precision · BigInt0x
0b
0o
Text codec
UTF-8 · Base64 · hex · URLEncoding the text above into each format. Switch to Decode to paste an encoded string and read it back.
CSS units
1rem = 16px · 1pt = 4⁄3pxrem is relative to the root font size — change root px if yours isn't 16.