Free retail business calculators for checking everyday pricing, tax, cost, and planning questions. Use the tool that matches the decision in front of you, then compare the result with the records and terms that apply to your business.
GST Calculator for India
Add GST to a base amount or remove GST from an inclusive total. See the base, tax and final amount in INR.
Calculate GSTCurrency Converter
Convert an amount between currencies using the exchange rate you enter.
Convert an amountUnit Price Calculator
Compare the price per item, kilogram, litre, metre, or other unit.
Compare unit pricesPercentage Change Calculator
Calculate the amount and percentage increase or decrease between two values.
Check percentage changeProfit Margin Calculator
Calculate unit profit, profit margin and markup from a cost price and selling price.
Measure profit marginMarkup Calculator
Find a selling price from cost and markup, or calculate markup from an existing selling price.
Work out markupDiscount Calculator
Calculate the amount saved and final price after applying a percentage discount.
Calculate a discountSelling Price Calculator
Calculate a suggested selling price and markup amount from cost and a desired markup percentage.
Set a selling priceBreak-Even Calculator
Estimate the units and revenue needed to cover fixed costs from selling price and variable cost per unit.
Estimate break-even salesChoose the right calculator for the question
Use the GST Calculator when you need to add tax to a base amount or separate GST from an inclusive amount in India. Use the Currency Converter when you have a verified exchange rate and want to translate a supplier or reference amount between currencies. Use the Unit Price Calculator to compare pack sizes, and the Percentage Change Calculator to check how a price, cost, or sales figure moved.
For product pricing, margin and markup answer different questions: margin shows profit as a share of the selling price, while markup measures the increase from cost. The Discount and Selling Price calculators help test a proposed customer price. The Break-Even Calculator estimates the sales volume needed to cover fixed costs under its stated assumptions.
From a calculation to a retail decision
A calculation is most useful when it is connected to the records behind it. Check cost prices against purchase and supplier records, confirm selling prices in product records, and review the effect of sales in business reports. For stock decisions, combine the result with recorded quantities and a physical check rather than relying on a percentage alone.
Indian merchants can use the India retail software hub for POS, billing, inventory, udhaar, and GST-related billing context. The GST calculator checks arithmetic only; it does not determine tax treatment, file returns, or guarantee compliance.
How to use these free business tools responsibly
- Use a consistent currency and tax basis when comparing cost and selling price.
- Check the date and source of any exchange rate, then account for bank fees, provider spreads, and other transaction costs separately.
- Review discounts, returns, operating expenses, and taxes before treating an item-level result as net profit.
- Keep source records current. A calculator can clarify an assumption, but it cannot correct missing sales, purchases, stock movements, or expenses.