Scientific Calculator for Maths, Physics & Chemistry
A realistic live calculator and practical science formulas in one place. Use it on mobile or desktop.
Maths quick help
In DEG mode, sin(30) = 0.5. In RAD mode, sin(Ï€/2) = 1. Use 2^3 for powers, 6.02E23 for scientific notation, and Ans to reuse the previous answer.
Close brackets after functions. Use × and ÷ between numbers. The % key divides a number by 100.
Physics: Speed, distance & time
Enter the two known values to calculate the third. Select the appropriate units for every value.
Distance = speed × time. Calculations convert through metres and seconds.
Chemistry: Moles & concentration
Enter two known values to calculate mass, molar mass, or moles. For concentration, enter moles and solution volume.
n = m ÷ M; c = n ÷ V. Molar mass needs a trusted periodic table or your course data. Concentration here means molarity (mol/L), not mass percentage.
How to use the calculator
- Use the calculator buttons to build an expression. The result appears on the screen as you enter it.
- Select DEG (degrees) or RAD (radians) before using trigonometric functions.
- Press = to add a calculation to History. The Favourite heart saves your preference in this browser; press Ctrl+D to bookmark the page.
- In the Physics or Chemistry tab, enter the required values and units, then press Calculate.
History and favourites are stored in this browser and may disappear when browser data is cleared or private mode ends. Verify inputs, units, and results before using them for laboratory, exam, or engineering work.
Frequently asked questions
Is scientific calculator free?
Yes. The Nagomart calculator is free and runs in your browser.
What is the difference between DEG and RAD?
DEG uses degrees and RAD uses radians. For example, sin(30) equals 0.5 in DEG mode.
Which units does the physics tool support?
Distance: kilometres, metres, and miles. Time: hours, minutes, and seconds. Speed: km/h, m/s, and mph.
What is the formula for molarity?
Molarity is moles divided by solution volume in litres; the unit is mol/L.
