Free tools for marketing a business
Count characters the way X and Threads count them, split long writing into a thread, format a LinkedIn post, measure engagement, price a sponsor package, and value your list. Each one shows its working.
Free. No account. Runs in your browser.
Engagement Rate Calculator
Calculate engagement rate by followers and by reach for one post or a set of posts on Instagram, X, LinkedIn, or Threads, with the formula beside the result.
OpenTwitter/X Character Counter
Free Twitter/X character counter. Live count against the 280 character limit with URL shortening to 23 characters, emoji weighting, and a post preview.
OpenThreads Character Counter
Free Threads character counter with the 500 character limit, full-length URL counting, emoji weighting, and a live post preview for Meta Threads.
OpenTwitter/X Thread Splitter
Free Twitter/X thread splitter. Paste long-form writing and get a numbered thread with every post under the 280 character limit and URLs kept whole.
OpenLinkedIn Text Formatter
Free LinkedIn text formatter. Make post text bold or italic, preview the see more fold, count characters against the 3,000 limit, and copy in one click.
OpenNewsletter Sponsor Rate Calculator
Build a transparent newsletter sponsor package rate from delivered reach, placements, CPM, production, and exclusivity assumptions.
OpenNewsletter List Value Calculator
Estimate monthly revenue, annual revenue, and revenue per subscriber from transparent newsletter audience and offer assumptions.
OpenNewsletter Growth Rate Calculator
Calculate net growth rate, gross growth rate, and churn for one newsletter period from your starting subscribers, new signups, and unsubscribes.
OpenContent Cadence Planner
Work out how many social posts one person can sustain each week from the hours available, the platforms in play, and the newsletter that comes first.
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