Free, no sign-up

Finance tools that explain themselves.

Most online calculators hand you a number and leave. Ours hand you the number and then an AI CFO tells you what it means for your business, what is good about it and what should worry you. Ten tools, free, no email required, nothing stored.

Built by an accountant. Same maths we use for paying clients.

Pricing and profit

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Selling price calculator

Find the price you need to achieve your target margin. Plus a straight answer on the margin versus markup confusion that quietly costs money on every sale.

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Break-even calculator

Find out how much you need to sell before you start making a profit. How many units and how much revenue it takes to cover your costs.

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Cash

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Cash burn calculator

See how quickly your business is consuming cash. The gap between what you spend and what you earn, and what you will have left in a few months.

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Runway calculator

Find out how long your current cash can sustain your business. The number that decides how much time you have to fix things.

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Startup metrics

These four work together. Calculate your CAC and LTV first, and the last two will carry your numbers over automatically.

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CAC calculator

Work out what it really costs to win one customer. Total sales and marketing spend against the customers it actually delivered.

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LTV calculator

Estimate what a customer is worth before they leave. Gross profit over their expected lifetime, and what churn is really costing you.

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LTV to CAC calculator

See whether your growth builds the business or drains it. Customer value against acquisition cost, with the benchmarks put in context.

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CAC payback calculator

Find out how long until a customer pays for themselves. The cash question hiding behind every growth metric.

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Payroll

Nigerian rules, in naira. Both directions of the same question, using one shared calculation so they always agree.

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Gross to net salary

See what a salary actually pays after tax and pension. A full payslip breakdown, the tax bands you land in, and how much of a raise you would really keep.

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Net to gross salary

Work out the gross salary that delivers a promised take-home. Plus the true cost to your business once your own pension contribution is counted.

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Ask Buff CFO

An AI CFO sits inside every tool

Run a calculation and the assistant appears underneath it, already holding your figures. Ask it whether your margin is healthy, what happens if your costs climb 15%, or how to bring your break-even point down. It answers in plain English about your numbers, not in generic textbook advice.

  • It sees the figures you just calculated, so answers are specific
  • It explains the accounting behind the number, not just the number
  • It tells you when something looks wrong, rather than flattering you
  • It will say when a question needs a human, because some do
Is a 30% margin healthy?
It depends on what it has to cover. Your 30% leaves ₦4,285.71 on every unit. If your fixed costs are ₦1m a month, you need roughly 234 units just to break even. That is the test, not the industry average.
What if my supplier raises prices 15%?
Your cost goes to ₦11,500 and holding your price at ₦14,285.71 drops your margin to 19.5%. To protect the 30% you would need to charge ₦16,428.57, a 15% rise passed straight through.

Illustrative. Your answers will use your own figures.

Why we give these away

Because the maths should be free

Nobody should have to pay an accountant to find out what price to charge. These are the calculations we run for clients in the first week. Have them.

Because it shows you how we work

The assistant in these tools is a small version of what our clients get: AI doing the analysis, with a professional standing behind the answer. Try it before you trust us with anything bigger.

Because some of you will need more

A calculator answers one question. If the answer worries you, or you have twenty more questions behind it, that is when a finance function beats a spreadsheet. That is our actual business.

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