Calculators
Three sums that come up constantly in a shop, a committee or a family ledger. They are free, they need no account, and everything is worked out in your own browser — nothing you type is sent anywhere or stored.
Which one do you need?
You are writing a bill. Use the GST calculator. It answers both of the sums that get called “calculating GST” — adding tax to a price, and backing it out of one that already includes it — and it splits the tax into CGST and SGST, or shows IGST when the buyer is in another state.
You lent money, or borrowed it, by hand. Use the interest calculator. Rates in a shop are quoted per month — “two rupees” means 2 per cent a month, which is 24 per cent a year — so it asks which period you were told before it answers, and it will work out simple or compound interest.
A bank or a finance company quoted you a loan. Use the EMI calculator. It gives the monthly instalment, the total interest over the whole term, and the total you will have repaid by the end — which is the figure worth comparing between two offers.
GST calculator
Work out GST at any rate, both ways: add it to a price, or back it out of one that already includes it. Shows the CGST and SGST halves, or IGST for an inter-state sale.
Open itInterest calculator
Work out the interest on money lent or borrowed by hand, at a rate quoted per month or per year, simple or compounded. Shows the interest, the total due and what one month costs.
Open itEMI calculator
Work out the EMI on a loan from the amount, the annual rate and the number of months, and see how much of what you repay is interest.
Open itLooking for how to keep the book itself? Read the guides.