What These Finance Calculators Are For
These tools cover the financial calculations that come up most often when running a business, selling products, or planning personal finances. The focus is on clarity: each calculator shows the formula it uses, applies it to your numbers, and displays the working so you can follow the logic and catch input mistakes before they matter.
Pricing and Profit
The most common starting point for anyone selling a product or service is working out what to charge. The Markup Calculator finds a selling price from cost and a target markup percentage. The Profit Margin Calculator works out gross, operating, and net margin from revenue and costs. These two tools are related but answer different questions: markup is calculated on cost, margin is calculated on revenue. Confusing them is one of the most common pricing mistakes in small business, so both pages explain the difference with examples.
The Product Pricing Calculator goes further, letting you choose between cost-plus pricing, target margin pricing, and full craft pricing that includes materials, labour, and overhead. The Break Even Point Calculator then shows how many units you need to sell before fixed costs are covered and the business starts making money.
Profit Analysis
Once a price is set and sales are running, the profit calculators help track performance. The Gross Profit Calculator measures profit before operating expenses. The Net Profit Calculator steps through the full income statement from revenue down to profit after tax. The Profit Percentage Calculator expresses profit as a percentage of cost price, which is useful when comparing products or product categories.
Investment and Savings
The ROI Calculator measures return on investment as a percentage of the original cost, with an optional annualized rate for comparing investments held over different time periods. It handles stock purchases, rental property, marketing campaigns, and business projects using the same formula. The Savings Goal Calculator works in the other direction: given a target amount and a time frame, it calculates the monthly contribution needed to reach it, or how long a given monthly amount will take.
Who Uses These Tools
These calculators are used by small business owners setting prices for the first time, e-commerce sellers checking product margins, freelancers quoting jobs, students studying financial accounting, and anyone who wants to run a quick number check without opening a spreadsheet. The guides on each page are written in plain language, with worked examples that follow the same steps the calculator uses.