Free marketing tools for agencies & growth teams
Fast, accurate calculators for the numbers you check every week — ad returns, tracking links, GST, test results and copy length. Free, no sign-up, and nothing leaves your browser.
- Free forever
- No sign-up
- Works on mobile
ROAS CalculatorROAS, cost per lead, cost per customer and net profit from your ad spend.Open tool →
UTM BuilderClean, consistent UTM tracking links with presets for Meta, Google, LinkedIn and more.Open tool →
GST Calculator (India)Add or remove GST and split it into CGST + SGST or IGST for invoices and quotes.Open tool →
A/B Test Significance CalculatorIs variant B really better? p-value, uplift and the sample size you still need.Open tool →
Ad Copy Character CounterMeta, Google RSA, SEO title & description, Instagram, X and LinkedIn limits with a SERP preview.Open tool →
Berry OS for agencies
Run these numbers automatically for every client
Berry OS connects each client’s Meta Ads, leads, invoices, social posts and reports in one workspace — so ROAS, GST invoices and campaign results update themselves.
Start 7-day free trial →No card required · Starter ₹1,499 / $17 a month after the trial
Frequently asked questions
Are these tools really free?
Yes. They are free to use with no sign-up and no limits. They run in your browser and nothing you type is uploaded.
Who makes these tools?
Digital Berries, the team behind Berry OS — an operating system for marketing agencies that connects clients, leads, Meta Ads, invoices, social and reporting.
Can I share a result with a client?
Yes. Each tool has a “Copy result + link” button; the link reopens the calculator with the same numbers.