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.
Featured Conversions
- Grams to pounds & ounces
- Kilos to stones & pounds
- Kilos to pounds & ounces
- Stones to pounds & ounces
- Centimeters to inches
- Centimeters to feet & inches
- Cubic yards to tons
- Meters to feet & inches
- Millimeters to inches
- Inch-pounds to ft-lb
- Inches to centimeters
- Newton-Meters to ft lb
- 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
- Fractions Calculators
- Hex to Decimal Converters
- LED Savings Calculator
- Mulch Calculator
- Percentage Calculator
- Roman Numerals Converter
- 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
- Weight Converter
- Weight To Volume Converter
If you've ever been fooled by the old question, 'Which weighs more: a pound of feathers or a pound of lead?' then you wouldn't be alone. Although the feathers and the lead both weigh exactly the same (um, a pound), their density is wildly different, and we can sometimes mentally conflate weight and ...
Research suggests that the number of walking steps in a mile for a person of average height and weight is between 2,000 and 2,500 steps. That figure decreases to between 1,400 and 1,700 steps per mile when running, due to the increase in stride length...
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
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