Calculators and Converters
Choose from a multitude of free calculators and converters in the areas of finance, health, cooking, math and science for everyday, general use.
Financial Calculators
- Compound Interest Calculator
- CAGR Calculator
- Car Loan Calculator
- Credit Card Repayment
- Hourly to Salary Calculator
- Interest Rate Calculator
- IRR Calculator
- Loan Payoff Calculator
- Margin Calculator
- Personal Loan Calculator
- Savings Calculators
- Savings Goal Calculators
- Simple Interest Calculator
- Time Card Calculator
Featured Conversions
- Grams to ounces
- Grams to pounds
- Kilos to stones & pounds
- Kilos to pounds
- Stones to pounds
- Centimeters to inches
- Centimeters to feet & inches
- Cubic yards to tons
- Gallons to pounds
- Inch-pounds to ft-lb
- Inches to centimeters
- Meters to feet & inches
- Millimeters to inches
- Newton-Meters to ft lb
- Ounces and pounds
- Square feet to cubic feet
- Square feet to cubic yards
Health and Math
- Age Calculator
- Birthday Calculator
- Chronological Age
- Cubic Feet Calculator
- Cubic Yards Calculator
- Date Calculator
- Days & Time Between Dates
- Days Until...
- Decimal to Fraction Calculator
- Density Calculator
- Fractions Calculators
- Hex to Decimal Converters
- LED Savings Calculator
- Mulch Calculator
- Percentage Calculator
- Percentage Change
- Roman Numerals Converter
- Significant Figures Calculator
- Square Footage Calculator
Unit Conversions
- Acceleration Converter
- Area Converter
- Cooking Converter
- Data Storage Converter
- Energy Converter
- Fuel Economy Calculator
- Height Converter
- Length and Distance Converter
- Mass & Weight Converter
- Power Converter
- Pressure Converter
- Time Converter
- Velocity Converter
- Volume Converter
- Water Weight Calculator
- Weight Converter
- Weight To Volume Converter
What is the Difference Between Nominal, Effective and APR Interest Rates?
Whether you're paying interest on a debt or earning interest on savings and investments, the nominal interest rate is the figure used before considering inflation. Nominal interest rates are the ones advertised on financial products, but once they are adjusted for inflation, these can go up or down ...
How Much Does a Gallon of Water Weigh?
One US gallon of water weighs around 8.33 pounds or 3.78 kilograms at room temperature. The precise weight of water varies according to its level of density, which in turn depends on its storage temperature.You can learn more about the weight of water - and try out our water weight calculator and re...
Compound Interest Formula - Explained
An in-depth look at the compound interest formula as we break down how to calculate compound interest. The concept of compound interest is that interest is added back to the principal sum so that interest is earned on that added interest during the next compounding period.
Whether you're ordering clothes online, monitoring your weight, or designing a bespoke bucket chair for your space-shuttle to the moon (look, the world is on fire; it's OK to have a plan B), you need to be able to measure your body accurately. Here's how to get the digits for your waist.
Calculator suggestions
I love hearing your feedback. So, please feel free to suggest any calculators or converters that you feel would be a useful addition to this website. Or, if you have any ideas for extra features, then please suggest those also. You can contact me here.
