Free tools for founders, marketers, designers and developers.

Estimate how many months your cash lasts using monthly revenue, costs and one-off spending.

Find how many sales are needed to cover fixed and per-unit costs.

Compare markup and gross margin, then work backwards from a target margin.

Compare customer lifetime gross profit with acquisition cost.

Model next month’s recurring revenue from new sales, expansion and churn.

Estimate an hourly or daily rate that covers income, overhead and non-billable time.

Measure gross profit, return on investment and break-even sales for a campaign.

Estimate leads, customers and revenue from conversion assumptions.

Estimate the people cost of a recurring meeting over a year.

Instant website intelligence for audits, metadata checks, technical signals and quick competitor sense-checks.

Create consistent campaign URLs with source, medium and campaign tags.

Check text and background colours against WCAG contrast thresholds.

Project an end-of-month cash balance across the next three months.

Estimate a reorder point from demand, supplier lead time and safety stock.

Check whether a page is ready for answer engines, AI summaries, extractive search, FAQ opportunities and snippet-style answers.

See how a price discount changes gross profit and required sales volume.

Build a simple project quote from hours, rate, direct costs and contingency.

Crawl a website, filter low-value URLs, detect indexability issues and export a cleaner XML sitemap.

Measure customer retention and churn over a period without counting new customers twice.

Generate cleaner meta tags and better social preview markup for your pages.

Estimate annual time and cost savings from automating a repeated task.

Audit up to 10,000 URLs from a CSV export for missing and duplicate metadata, then download the findings.

Compare social post engagement by reach, impressions or follower count.

Build JSON-LD for organisations, articles, local businesses and breadcrumbs without an account.

Build a practical brand reference with colours, type and usage notes.

Make social graphics in your browser and export them as PNG files.

Compare two content lists to find topics and keywords you have missed.

Clean, group and export keyword lists for content planning.

Paste prospect details, prioritise your list and export a CSV.

Preview titles, descriptions and social cards before publishing.

Compare backlink sets, overlaps and unique referring domains between one or two sites.

Quick DNS, MX, TXT, WHOIS and IP checks in one place.

Validate, tidy and reformat JSON with a single click.

Build and test regular expressions with instant match highlighting.

Paste CSS or HTML and instantly pull out the colour palette.