Free online calculators and tools
No sign-up. No ads.
HatchLoop Tools is a free set of 20 online calculators and developer tools from HatchLoop, in five groups: loans and mortgages, percentages, money and sales, developer tools, and words and text. Everything runs in your browser, so nothing you type is sent to a server. Each tool shows its working and names its sources, and its figures are checked against separately written code.
Loans & mortgages
- Amortization calculatorUse this when you want the payment on any loan.
- Amortization scheduleUse this when you want the full repayment table.
- Mortgage amortization calculatorUse this when you are buying a home: tax, insurance, PMI.
- Loan amortization calculatorUse this when comparing car, personal or student loans.
- Credit card payoff calculatorMonths to pay off, interest, and several cards compared
- Simple interest calculatorInterest for any time span or between two dates
Percentages
Money & sales
- Discount calculatorSale price after a percent off, stacked discounts too
- Tip calculatorTip, total and each person's share, to the cent
- Commission calculatorFlat or tiered commission on any sale
- UAE gratuity calculatorEnd-of-service gratuity under UAE labour law, with each step
- Saudi end-of-service calculatorEnd-of-service award under the Saudi Labour Law, with each step
- Oman end-of-service calculatorEnd-of-service gratuity under the Omani Labour Law, with each step
- Real estate commission calculatorListing and buyer sides, agent and broker split
Developer tools
Words & text
Our tests: Does your JSON formatter change your data?