Finance Tools
Mortgage, loan, tip, tax, investment — financial calculators that show their work.
Overview
Financial tools should never be a black box. Every calculator here shows the formula, breaks down the math step by step, and lets you compare scenarios side by side. From a 30-second tip split to a 30-year mortgage amortization, you'll see exactly where each number comes from.
Common Use Cases
- →Compare mortgage offers (rate, term, total interest) before signing.
- →Calculate compound interest growth for retirement planning.
- →Estimate take-home after taxes when negotiating a salary.
- →Split bills fairly with tip and tax included.
Featured Tools
- Global Mortgage Suite
High-precision mortgage calculations for US, UK, and KR markets.
- Stock Wealth Simulator
Visualize the explosive power of compound interest and consistent investing.
- Tip Calculator
Calculate tips and split bills between multiple people.
- Discount Calculator
Calculate discounted prices and savings amounts.
Frequently Asked Questions
Are tax calculations accurate for my country?
Defaults assume US-style assumptions but parameters are adjustable. For exact filing, use your country's official tax tables — these are for planning, not final filing.
Can I model 'what if' scenarios?
Yes — most calculators show monthly/yearly breakdowns so you can compare 15 vs 30 year mortgages, 5% vs 7% returns, etc. Run multiple scenarios and screenshot the results.
Why doesn't this match my bank's online calculator?
Most banks use one specific formula (usually pessimistic — they over-state minimum payments). Ours uses the standard amortization formula. Small differences usually come from how each calculator handles initial period rounding.
Stock Wealth Simulator
Visualize the explosive power of compound interest and consistent investing.
Refinance Calculator
Calculate potential savings and break-even from refinancing your loan.
Boat Loan Calculator
Estimate monthly payments and total cost for boat financing.
RV Loan Calculator
Estimate monthly payments for recreational vehicles.
Business Loan Calculator
Calculate monthly EMI and amortization schedule for business loans.
Break Even Point Calculator
Find the sales volume needed to cover your total costs.
CAGR Calculator
Calculate Compound Annual Growth Rate for investments.
Cap Rate Calculator
Determine the capitalization rate for real estate investments.
Rental Yield Calculator
Calculate gross and net rental yield for property investments.
Stock Average Calculator
Calculate average cost per share when buying stocks at different prices.
Inflation Calculator
Measure the impact of price changes over time.
Profit Margin Calculator
Calculate gross, operating, and net profit margins.
Invoice Generator
Create professional invoices and download as PDF.
Car Loan Calculator
Calculate monthly payments and compare loan vs lease options.
Stock Portfolio Tracker
Monitor your stock investments and performance.
Currency Converter
Real-time exchange rates for global currencies.
Budget Planner
Simple tool to manage and track your monthly budget.
DRIP Calculator
Calculate long-term growth with dividend reinvestment.
Global Mortgage Suite
High-precision mortgage calculations for US, UK, and KR markets.
Kimchi Premium Tracker
Track real-time crypto price spread between Korean and global exchanges.
SaaS Cost Optimizer
Manage and optimize your software subscriptions.
Auto Loan Calculator
Calculate monthly car payments and total loan cost.
Boat Loan Calculator
Estimate monthly payments and total cost for boat financing.
RV Loan Calculator
Estimate monthly payments for recreational vehicles.
Personal Loan Calculator
Calculate monthly payments for personal loans.
Mortgage Payment Calculator
Calculate monthly mortgage payments and amortization schedule.
Refinance Calculator
Calculate potential savings and break-even from refinancing your loan.
Cap Rate Calculator
Determine the capitalization rate for real estate investments.
Rental Yield Calculator
Calculate gross and net rental yield for property investments.
Stock Average Calculator
Calculate average cost per share when buying stocks at different prices.
Break Even Point Calculator
Find the sales volume needed to cover your total costs.
Profit Margin Calculator
Calculate gross, operating, and net profit margins.
VAT Calculator
Calculate VAT amounts and price with/without tax.
Sales Tax Calculator
Calculate sales tax and total price for US purchases.
Discount Calculator
Calculate discounted prices and savings amounts.
Tip Calculator
Calculate tips and split bills between multiple people.
CAGR Calculator
Calculate Compound Annual Growth Rate for investments.
Rule of 72 Calculator
Estimate how long it takes to double your money.
Hourly to Salary Converter
Convert your hourly wage to its annual salary equivalent.
Salary to Hourly Converter
Convert your annual salary to an hourly wage rate.