62 free tools in this category. Page 5 of 6.
Calculate population and sample standard deviation, variance, and mean. Free online calculator with step-by-step breakdown showing each squared deviation and summary.
Convert temperatures between Fahrenheit, Celsius, and Kelvin instantly. See all three scales at once with reference points for freezing, boiling, and body temp.
Free text repeater tool to duplicate text multiple times with custom separators, numbering, and formatting. Perfect for lists, testing, and text generation.
Reverse text, words, or lines instantly with this free online text reverser tool. Flip characters, reorder words, or invert line order with one click.
Free TikTok character counter with 2026 limits. Check captions (2,200 chars), bios (80 chars), usernames (24 chars). Count emojis, hashtags instantly.
Free Twitter/X character counter with real-time limits. Count emojis, hashtags, mentions, URLs with Twitter\
Convert units of length, weight, temperature, volume, speed, area, and data instantly. Free converter with quick-reference tables for common conversions.
Generate upside down text using Unicode characters for free. Flip letters, numbers, and words instantly for social media bios, usernames, and creative posts.
Calculate the volume and surface area of spheres, cylinders, cones, cubes, rectangular prisms, pyramids, and triangular prisms. Includes formula breakdowns.
Convert between ounces, pounds, tons, grams, kilograms, metric tons, and stones. See all conversions at once with body-weight highlights and reference table.
Free online word counter with character count, sentence count, reading time, and platform limits for Twitter, Instagram, LinkedIn. Real-time statistics.
Make quick decisions with this free yes or no generator. Get a random answer instantly, track your history, and see running tallies. No signup needed to start.
Showing 49-60 of 62 tools