Free tools
Free tools for founders who care about revenue
Simple, no-signup calculators and utilities for growing — and measuring — a social-first business. Every one runs in your browser. Built by the team behind seenpaid.
Social media
Tweet Character Counter
Count characters as you write and stay under the 280 limit.
Open tool →Twitter Thread Splitter
Turn a long draft into clean, numbered 280-character tweets.
Open tool →Engagement Rate Calculator
See your true engagement rate across likes, comments and shares.
Open tool →Post Time Zone Converter
Convert your best posting time into your audience’s time zone.
Open tool →Revenue & SaaS metrics
MRR Calculator
Turn customers and price into Monthly Recurring Revenue.
Open tool →ARR Calculator
Project Annual Recurring Revenue from your MRR.
Open tool →Churn Rate Calculator
Measure how fast you’re losing customers each period.
Open tool →Customer LTV Calculator
Estimate the lifetime value of a customer.
Open tool →CAC Calculator
Work out your Customer Acquisition Cost.
Open tool →LTV:CAC Ratio Calculator
Check whether your unit economics actually work.
Open tool →Break-Even Point Calculator
Find how many sales you need to cover your costs.
Open tool →Marketing & attribution
UTM Link Builder
Build tagged tracking links for campaigns in seconds.
Open tool →Revenue Per Post Calculator
See what one social post is really worth.
Open tool →Conversion Rate Calculator
Turn visitors and conversions into a clean percentage.
Open tool →Social Media ROI Calculator
Measure the return on your social media effort.
Open tool →Content & writing
Word & Character Counter
Count words, characters, sentences and reading time instantly.
Open tool →Text Case Converter
Switch text between UPPERCASE, lowercase, Title and Sentence case.
Open tool →Hashtag Generator
Turn a caption or keywords into ready-to-use hashtags.
Open tool →Bold & Italic Text Generator
Make 𝗯𝗼𝗹𝗱, 𝘪𝘵𝘢𝘭𝘪𝘤 and 𝚖𝚘𝚗𝚘 text for posts and bios.
Open tool →Caption Cleaner
Strip messy spacing and extra line breaks from a caption.
Open tool →URL Slug Generator
Turn a title into a clean, URL-friendly slug.
Open tool →Lorem Ipsum Generator
Generate placeholder paragraphs for mockups and drafts.
Open tool →Image & file
Image Compressor (File Size Reducer)
Shrink image file size right in your browser — nothing uploaded.
Open tool →Image Resizer
Resize an image to exact dimensions, privately in your browser.
Open tool →Image Format Converter
Convert between PNG, JPG and WebP without any upload.
Open tool →Social Media Image Cropper
Crop an image to 1:1, 4:5, 9:16 or 16:9 for any platform.
Open tool →Developer & utility
Base64 Encoder / Decoder
Encode text to Base64 or decode it back, instantly.
Open tool →JSON Formatter & Validator
Pretty-print and validate JSON in one paste.
Open tool →Password Generator
Create strong, random passwords with one click.
Open tool →HEX ↔ RGB Color Converter
Convert colors between HEX and RGB, with a live swatch.
Open tool →Unix Timestamp Converter
Convert between Unix epoch time and a human date.
Open tool →These tools measure the metrics. seenpaid moves them.
Post to X, Bluesky, LinkedIn, Instagram, Facebook & TikTok from one place — then see exactly which posts made money, matched to your Stripe.
Start your 7-day free trial →