A COLLECTION OF ONLINE CALCULATORS
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Let's start with a quick technical definition to better describe what's provided in this site. The term calculator does not necessarily refer to a small device with a keyboard and a display that performs arithmetic operations. In general, this term refers to any tool with specific built-in functions used to aid a computation. Here you will find virtual calculators as online substitutes for the pocket ones, as well as various unit conversion tools and other free virtual gadgets. Why would you need an online calculator if you have a "real" one? Well, firtsly, most online computational tools here can be used just as you would use a real portable device. But in addition, you can copy and paste both the entry and the results into your document- something you can't easily do with a hand-held one.
ONLINE MATH CALCULATORS
METRIC UNIT CONVERSION CALCULATORS
ENGINEERING GADGETS
Scientific calculator with all common algebra and trigonometry functions and 25 physical and chemical constants
A tool with main math functions and binary convertor
An online calculation tool with main algebraic, trigonometric, inverse trigonometric and hyperbolic functions and three angle modes
Magnetic units- conversion between SI and CGS and the main equations table
Power and energy units conversion and formulas
Metric unit conversion table: convert lenght, mass, volume, area
Metric conversion calculators
Resistor color codes - find the value from colors and vice versa
Power supply safety quiz
Power factor calculator and formulas for VA and watts
PV panel calculator- how many PV panels do I need
Battery life calculator and battery bank sizing
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