Plan loans, savings and prices with clear numbers
Money decisions are easier when you can see the numbers before you commit. These free finance calculators work out a loan EMI before you visit the bank, show what a monthly SIP could grow to, add or remove GST on an invoice, turn an annual salary into a monthly or hourly figure, and convert between currencies. Each one explains the formula it uses, so you can follow the maths rather than trust a black box. Small business owners use them to price products and check margins, and households use them to plan savings goals and retirement.
For borrowing there is the EMI calculator, a general loan calculator with extra payments, a mortgage calculator with tax and insurance, and a credit card payoff planner. For saving and investing there are SIP, lumpsum, FD, RD, PPF and compound interest calculators. For shops and freelancers there are GST, VAT, discount, markup, profit margin and break-even tools.
Indian favourites such as EMI, SIP and PPF sit alongside US-style mortgage, UK VAT and tip calculators, and most tools let you switch between rupees, dollars, pounds, euros and other currencies. Every calculation happens in your browser; only the currency converter goes online, and only to fetch the latest exchange rates. Results are estimates to help you plan, not financial, tax or investment advice, so confirm important figures with your lender, bank or a qualified adviser.
SIP or lumpsum, simple or compound: choosing the right calculator
- SIP or lumpsum. A SIP invests a fixed amount every month, which suits a salary and spreads purchases over time. A lumpsum invests one amount once, such as a bonus. Use the SIP calculator for the first and the lumpsum calculator for the second; at the same return, money invested earlier has longer to compound.
- EMI, loan or mortgage. The EMI calculator gives the fixed monthly instalment and amortisation schedule used by Indian banks. The loan calculator adds extra payments and a payoff date. The mortgage calculator adds property tax, insurance, PMI and HOA fees for US-style home loans.
- Simple or compound interest. Simple interest is earned only on the original principal; compound interest also earns on interest already added. Savings accounts, deposits and long-term investments compound.
- Markup or margin. Both compare profit with a price, but markup divides profit by cost and margin divides it by the selling price. A 50% markup is only a 33.3% margin, so use the profit margin calculator when pricing to a margin target.
Tips for more realistic estimates
For plain percentage questions the math calculators are quicker. For planning, these habits help:
- Use conservative returns. Market-linked investments do not grow in a straight line, so try a few rates to see a range instead of one hopeful figure.
- Allow for inflation. The inflation calculator shows what a future sum is worth in today’s money, which is what matters for retirement or a child’s education.
- Compare loans on total interest, not just the instalment. A longer tenure lowers the EMI but can add a lot of interest, and the amortisation table makes that trade-off visible.
- Check tax separately. The calculators show growth before tax; tax on interest and gains depends on your country and situation.
Finance Calculators: frequently asked questions
How is EMI calculated?
EMI uses the reducing-balance formula EMI = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1), where P is the loan amount, r the monthly interest rate and n the number of months. Early instalments are mostly interest and later ones mostly principal.
Is a SIP better than a lumpsum investment?
Neither is always better. A lumpsum spends more time invested if you have the money now, while a SIP spreads your purchases and fits a monthly income. Many people use both: a SIP from salary and lumpsums for bonuses.
How do I remove GST from a price that already includes it?
Divide the inclusive price by 1 plus the rate. At 18%, ₹1,180 ÷ 1.18 = ₹1,000, so the GST is ₹180. The GST calculator works in both directions and splits the tax into CGST and SGST or IGST.
How accurate are the currency converter’s rates?
It uses daily mid-market reference rates from a public exchange-rate service. Banks, cards and money changers add their own margin, so the amount you actually receive is usually a little lower.
How do I work out the price after two discounts?
Apply them one after the other, not added together. 20% off and then a further 10% off leaves 0.8 × 0.9 = 0.72 of the price, a 28% total discount rather than 30%. The discount calculator handles stacked discounts for you.
What does CAGR mean?
Compound annual growth rate is the steady yearly rate that would turn a starting value into an ending value over a number of years. The CAGR calculator uses it to compare investments held for different lengths of time.