Question 1

How do I convert Celsius to Fahrenheit?

Accepted Answer

Multiply the Celsius value by 9/5 and add 32. The temperature category in the unit converter tab does this instantly. Enter a value in Celsius and switch the output unit to Fahrenheit.

Question 2

Does this calculator support trigonometric functions in degrees or radians?

Accepted Answer

Yes. The scientific calculator tab has a degree or radian toggle, so sin, cos and tan all use whichever angle mode you select.

Question 3

Can I convert data storage units like megabytes to gigabytes?

Accepted Answer

Yes. The data category covers bits, bytes, kilobytes, megabytes, gigabytes and their binary equivalents (kibibytes, mebibytes, gibibytes).

Question 4

Is there a limit to how many conversions I can run?

Accepted Answer

No. The converter, the calculator and the formula reference are free to use with no limit, since everything runs on your own device.

Question 5

Which subjects does the formula reference cover?

Accepted Answer

Mathematics, physics, chemistry, biology, economics and engineering. Each subject is organized by topic, from the quadratic formula and SUVAT equations to pH, elasticity of demand and Young's modulus, and every entry explains its variables in plain language.

Question 6

Can I search for a formula by what it does?

Accepted Answer

Yes. The search box matches formula names, variable meanings, topics and subjects, so typing something like momentum, half-life or break-even finds the right entry without knowing its exact name.

Question 7

Does this tool work without an internet connection once loaded?

Accepted Answer

Yes. Once the page has loaded, the unit converter, the scientific calculator and the formula reference all run fully offline in your browser.

Calculator, Converter and Formulas

Frequently asked questions

Calculator, Converter and Formulas

Frequently asked questions