Percentage & Finance Calculator

Percentages, discounts, tip splits and loan EMI — all in one place.

Processed locally — nothing is uploaded

About Percentage & Finance Calculator

The loan figures use the standard amortising formula, where the monthly payment stays level while the split between interest and principal shifts across the term. That is why total interest, rather than the monthly number, is the figure worth comparing between two offers.

Work out percentages and percentage change, sale discounts and final prices, tip splits per person, and monthly loan or EMI payments with total interest — all in one place. It covers the everyday money maths that comes up while shopping, dining out, budgeting and comparing loans.

Switch between modes to answer 'what is X% of Y', 'how much do I save', 'what is each person's share' or 'what will this loan cost'. Percentage change is the one to double-check: 40 rising to 50 is a 25% increase, while 50 falling back to 40 is a 20% decrease.

Learn how this works

Frequently asked questions

What is an EMI?

An Equated Monthly Instalment is the fixed monthly payment on a loan covering both principal and interest. The calculator shows the monthly amount, total paid and total interest. EMI is the standard payment method for mortgages, car loans, and personal loans, and it ensures both lender and borrower know exactly what payment is due each month. The calculator breaks down how much of each payment goes toward principal (reducing the debt) versus interest (going to the lender), letting you understand the true cost of borrowing and compare loan terms.

Can it split a restaurant tip?

Yes — enter the bill, tip percentage and number of people to get the tip, total and each person's share instantly. This eliminates the awkward math of figuring out who owes what when splitting a check, especially with varied orders where some people had drinks or appetizers. Enter the total bill amount, your desired tip percentage (typically 15-20%), and the number of diners, and the tool calculates the per-person share including their portion of the tip. No more scrambling for calculators or mental math at the table.

Are my numbers private?

No. Everything runs locally in your browser using standard web APIs — your text, files and inputs are never uploaded to a server, so the tool works even offline once the page has loaded.

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