Standard Form Calculator
Write a number in standard form (a × 10ⁿ, as taught in the UK) or turn standard form back into an ordinary number.
Change the values and press Calculate to work out your own figures.
Enter an ordinary number or one in standard form such as 5.2 × 10^8.
Show the working
- Move the decimal point so one nonzero digit is in front of it: 2.597
- It moved 7 places left, so the power of 10 is 7
- 25,970,000 = 2.597 × 10⁷
How to use it
Enter an ordinary number or one in standard form such as 5.2 × 10^8.
Numbers can be typed with commas and in scientific notation (1.5e3, 1.5 × 10^3 or 1.5×10³). Show the working gives each step.
Key facts
a × 10ⁿ with 1 ≤ a < 10 and n a whole number
Two meanings
British schools call a × 10ⁿ 'standard form'; American schools call it scientific notation and use 'standard form' for the ordinary number (25,970,000). The calculator shows both.
Questions
What is 25,970,000 in standard form?
2.597 × 10⁷.
What is 0.00045 in standard form?
4.5 × 10⁻⁴.
Formulas
a × 10ⁿ with 1 ≤ a < 10 and n a whole number
Sources
Limitations
- Numbers have at most 400 characters and exponents up to ±10,000 (answers of powers up to ±1,000,000).