Online Calculators & Financial Tools

Work out percentages, GST, loan EMIs, SIP returns, take-home pay and unit conversions.

13 tools · most run in your browser; the rest say what they send

Percentage Calculator
Find X% of Y, percentage change and percentage difference.
GST Calculator
Add or remove GST at 5%, 18% or 40%, with the CGST/SGST or IGST split.
Tip & Bill Split Calculator
Calculate tips, split group bills, round per person, and copy SMS summary.
Fuel Cost Calculator
Calculate road trip gas costs, fuel consumed, and passenger splits.
EMI Calculator
Monthly EMI, total interest and repayment schedule for any loan.
Discount Calculator
Sale price and savings, including stacked discounts and coupons.
CTC to In-Hand Salary Calculator
Estimate monthly in-hand pay from your annual CTC.
Currency Converter
Convert between 160+ currencies at live exchange rates.
Needs internet

All Calculators & Finance tools

BMI Calculator
Body Mass Index, healthy weight range and WHO category.
Compound Interest Calculator
See how savings grow with compounding and regular deposits.
CTC to In-Hand Salary Calculator
Estimate monthly in-hand pay from your annual CTC.
Currency Converter
Convert between 160+ currencies at live exchange rates.
Needs internet
Discount Calculator
Sale price and savings, including stacked discounts and coupons.
EMI Calculator
Monthly EMI, total interest and repayment schedule for any loan.
Fuel Cost Calculator
Calculate road trip gas costs, fuel consumed, and passenger splits.
GST Calculator
Add or remove GST at 5%, 18% or 40%, with the CGST/SGST or IGST split.
Percentage Calculator
Find X% of Y, percentage change and percentage difference.
Scientific Calculator
Standard and scientific calculator with history and keyboard input.
SIP Calculator
Project the future value of a monthly SIP investment.
Tip & Bill Split Calculator
Calculate tips, split group bills, round per person, and copy SMS summary.
Unit Converter
Convert length, weight, temperature, area, volume, speed and data.

About these tools

Most everyday financial maths goes wrong in predictable ways: subtracting a percentage from a tax-inclusive total, adding two discounts together, or comparing loans by monthly instalment rather than total interest. Each calculator here shows the formula alongside the result, so you can check the reasoning rather than take the number on trust.

Every calculation runs in your browser. Nothing you enter — salary figures, loan amounts, invoice values — is transmitted or stored anywhere, which is worth knowing given how much personal financial information typical online calculators collect.

Guides

Step-by-step walkthroughs for jobs these tools handle.

Frequently asked questions

Are these calculators free to use?

Yes, entirely. There is no signup, no usage limit, and no paid tier. The calculations run in your browser, so there is no server cost to recover.

Why do my results differ from another calculator?

Almost always because of a different convention rather than an arithmetic error — whether a percentage is applied before or after tax, whether a period is counted inclusively, or how rounding is handled. Each calculator here shows its formula so you can see exactly which convention is in use.

Is my financial data stored?

No. Every figure you enter stays in your browser's memory and is discarded when you close the tab. Nothing is transmitted, logged, or associated with you.

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