Wall-clock time in any IANA zone to any other, resolved with the engine's own Intl.DateTimeFormat and its timezone database, so daylight saving and the half-hour zones are always right. Shows both UTC offsets and the day shift.
| Zone | Local time now |
|---|

Tax owed, effective rate and marginal rate from gross income and deductions, using a fixed published bracket table so the arithmetic is reproducible.

Discount a lump sum, ordinary annuity or annuity due back to today, and see the interest the discount rate is actually charging you.

Break-even volume and revenue from fixed and variable costs, plus profit and margin at a target volume. Handles the case where there is no break-even at all.

Length, mass, temperature, data and more.

Encrypt or decrypt with a repeating keyword, keeping case and leaving spaces and punctuation in place.

Encode text to RFC 4648 Base32 and decode it back, with padding control and a byte count.

Check any phrase as a palindrome, ignoring case, accents and punctuation, and see the first mismatch.

Pick a shape or drag the points, then copy the exact clip-path polygon CSS.