Word Counter and Character Counter both quantify text, but every platform cares about a different unit. Tweets, SMS, and meta descriptions cap by character. Blog posts, essays, and SEO briefs cap by word.
Both tools are instant and offline. If you're writing for Twitter/X (280 chars), SMS (160 chars), or a meta description (155 chars), Character Counter is your tool. If you're writing for length targets — a 1,500-word blog post, a 500-word summary, a college essay — reach for Word Counter.