Tip calculator
Bill × tip percent, split evenly.
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Finance
Mortgage, loans, interest, retirement, tax, tips, salary, and net worth — offline in this tab.
Runs in your browser · Nothing uploaded
- Tip calculatorBill, tip percent, split N ways.Runs in your browser · Nothing uploaded
- Indian govt salary calculator7th CPC Pay Matrix, DA, HRA, TA, NPS/GPF — editable rates, offline estimate. Not official pay.Runs in your browser · Nothing uploaded
- Sales tax calculatorAdd tax to a price or reverse a tax-inclusive total.Runs in your browser · Nothing uploaded
- Discount calculatorStack successive percent-offs and see the effective discount.Runs in your browser · Nothing uploaded
- Rule of 72Years to double an investment at a given rate — approx vs exact.Runs in your browser · Nothing uploaded
- Compound interest calculatorFuture value with compounding schedule and a simple growth chart.Runs in your browser · Nothing uploaded
- Simple interest calculatorInterest = principal × rate × time. Cross-links to compound.Runs in your browser · Nothing uploaded
- Mortgage calculatorMonthly payment and amortization schedule for a home loan.Runs in your browser · Nothing uploaded
- Loan calculatorPayment and amortization for personal, auto, or other loans.Runs in your browser · Nothing uploaded
- ROI calculatorReturn on investment and annualized ROI over years.Runs in your browser · Nothing uploaded
- Break-even calculatorUnits and revenue to cover fixed costs given contribution margin.Runs in your browser · Nothing uploaded
- Retirement calculatorFuture nest egg from savings and contributions; optional inflation.Runs in your browser · Nothing uploaded
- Net worth calculatorAssets minus liabilities with editable line items.Runs in your browser · Nothing uploaded
About Finance
Money math people actually search for: sales tax, stacked discounts, compound vs simple interest, mortgage and loan amortization, ROI, break-even, retirement projections, and a line-item net worth sheet.
Tip calculator and the Indian 7th CPC govt salary estimator live here too. Nothing is uploaded; rates you type stay on your device.
Tools in this category
Indian govt salary calculator
7th CPC Pay Matrix estimate with editable DA/HRA — not an official payslip.
Sales tax calculator
Add tax or reverse a tax-inclusive total.
Discount calculator
Stacked percent-offs with effective discount.
Rule of 72
Years to double — approx vs exact.
Compound interest calculator
Future value with compounding chart.
Simple interest calculator
Principal × rate × time.
Mortgage calculator
Home loan payment and amortization.
Loan calculator
Personal/auto loan payment schedule.
ROI calculator
ROI and annualized return.
Break-even calculator
Units to cover fixed costs.
Retirement calculator
Nest egg with optional inflation.
Net worth calculator
Assets minus liabilities line items.
Common questions
Is this financial advice?
No. Arithmetic only. Markets, taxes, and products are outside these pages.
Why are mortgage and loan separate?
Same amortize math, different framing and SEO landing pages.
Why these tools don't upload your files
There is no server to upload to. Each page is a static file, and the work happens in your browser. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network and it keeps working. The longer explanation