ANNOUNCEMENT i40x has a new look, a new logo and one page for every tool · October 2, 2026 Read

Updates · guides · announcements

Tips

Short, useful answers that save you time.

RSS
TIP

Word count or character count: which limit applies where

Essays, meta descriptions, posts and SMS each count differently.

· 2 min read
TIP

Percentages without the headache: the five formulas you need

Discounts, tax, price rises and exam scores all use the same five calculations.

· 2 min read