Tools for people who run growth.
The calculators I use to plan budgets, set ROAS guardrails and check whether a test, a discount or a channel is really paying. Free, instant, and private: everything runs in your browser and nothing you type is stored or sent anywhere.
The minimum ROAS and maximum CAC your unit economics can afford, with a full contribution margin waterfall.
Marginal ROAS and scaling calculatorFind the spend level where the next rupee or dollar stops paying back, before your P&L finds it for you.
LTV, LTV:CAC and payback calculatorModel contribution lifetime value from repeat behaviour, then see your LTV:CAC ratio and payback month.
Media budget plannerWork backwards from a revenue target to the orders, clicks and ad budget it takes, and the ROAS that implies.
Discount break-even calculatorHow many more units a discount has to sell just to earn the same gross profit you make at full price.
A/B test significance and sample size calculatorCheck whether a test result is real, or plan how many visitors and days a test needs before you start.
New UTM builder with GA4 channel checkBuild clean, consistent UTM links with presets for Meta, Google, LinkedIn and WhatsApp, and see how GA4 will classify them.
India Quick commerce take-rate calculatorWhat Blinkit, Zepto, Instamart and other platforms keep from every ₹100 you sell, and your real ROAS after incrementality.
ROAS, ACoS, TACoS and MER converterConvert between ROAS and ACoS instantly, calculate TACoS and MER, and see the break-even point for your margin.
CPM, CPC, CTR and CPA calculatorEvery core ad metric from five numbers: spend, impressions, clicks, conversions and revenue.
Profit margin and markup calculatorMargin from cost and price, or the price you need for a target margin, with tax handled properly.
ss-5.in Link shortenerShort links with instant redirects, private click stats and QR codes, on ss-5.in.
Built around the P&L, not the dashboard
Each tool explains its maths, so you can defend the number in a leadership review.
Contribution first
Break-even, LTV and scaling decisions use contribution margin, the money the business keeps, rather than platform revenue.
Shareable scenarios
Every input is saved in the link. Copy it into a deck or a Slack thread and your team opens exactly the same scenario.
Five currencies
Rupees, dollars, pounds, euros and dirhams, with example numbers that make sense in each market.
If growth is the conversation, let’s have it.
Advisory conversations, speaking, podcasts and media. Tell me what you are working on and I will reply personally within two working days.