A Calculator for Everything
351 free calculators for money, building, math and everyday life. Every one shows its formula and a worked example.
Finance
Mortgage & Real Estate
28 calculators
- Mortgage Payment Calculator
- Amortization Schedule Calculator
- How Much House Can I Afford?
- FHA Mortgage Calculator
- VA Mortgage Calculator with Funding Fee
Loans & Credit
11 calculators
- Loan Calculator
- Personal Loan Calculator
- APR Calculator (Including Fees)
- Loan Comparison Calculator
- Business Loan Calculator
Savings, Interest & Investing
22 calculators
- Compound Interest Calculator
- Simple Interest Calculator
- APY and APR Calculator
- Savings Goal Calculator
- CD Calculator
Retirement
12 calculators
- Retirement Savings Calculator
- 401(k) Calculator
- Roth vs Traditional Calculator
- IRA Calculator
- RMD Calculator
Tax & Income
11 calculators
- Salary to Hourly Calculator
- Hourly to Salary Calculator
- Overtime Pay Calculator
- Raise Calculator
- Bonus Tax Withholding Calculator
Business
17 calculators
- Profit Margin Calculator
- Markup Calculator
- Break-Even Calculator
- Net Profit Calculator
- Sales Commission Calculator
Construction & Trades
Electrical
17 calculators
- Ohm's Law Calculator
- Watts, Volts and Amps Calculator
- Voltage Drop Calculator
- Electrical Box Fill Calculator
- Breaker Size Calculator
Mechanical, HVAC & Plumbing
34 calculators
- BTU Calculator for Room Air Conditioners
- AC Tonnage Calculator
- CFM Calculator
- Duct Size Calculator
- Heat Loss Calculator