A COLLECTION OF ONLINE CALCULATORS

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Let me quickly describe what's provided in this site. The term calculator of course does not necessarily refer to a hand-held device with a keyboard and a display that performs arithmetic operations. In general, it 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 a collection of various unit conversion tools and other free virtual gadgets. By the way, why would you need an online calculator if you have a "real" one? Well, firstly, 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. Below we also provide links to some selected useful off-site engineering tools.

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 converter

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 length, mass, volume, area

Metric conversion calculators

Resistor color codes - find the value from colors and vice versa

PV calculator- how many solar panels do I need

Power Over Ethernet (PoE) calculator

Battery run time calculator