科学符号转换器
将任意数字转换为科学符号或从科学符号转换为或转换为科学符号。
输入结果时更新 。
关于此计算器
Scientific notation writes a number as a coefficient between 1 and 10 multiplied by a power of ten, and this scientific notation converter turns any value into that form along with E-notation, engineering notation, its order of magnitude, and the plain standard-form number. It also reads scientific input, so you can convert in either direction.
To build the coefficient, the decimal point is moved so a single non-zero digit sits in front of it; the number of places moved becomes the exponent. So 12,345 has its point shifted four places to give 1.2345 × 10⁴, and small numbers use a negative exponent — 0.00045 becomes 4.5 × 10⁻⁴. Engineering notation keeps the exponent to a multiple of three (matching kilo, mega and so on), rewriting 12,345 as 12.345 × 10³, and the order of magnitude is just that power of ten, 4 here.
Scientific notation is how very large and very small quantities are handled in physics, astronomy, chemistry and computing without writing long strings of zeros. Entering a value in E-notation such as 1.2e5 converts it straight back to the standard number 120000.
经常问到的问题
您如何在科学符号中写一个数字?
Move the decimal point so one non-zero digit sits in front of it, then multiply by 10 to the number of places moved. 12,345 = 1.2345 × 10⁴.
什么是电子注释?
电子说明是计算器如何显示科学符号:1.2345×104显示为1.2345e+4,其中e后面的数字是10的功率。
什么是工程符号?
It is like scientific notation but the exponent is kept to a multiple of three, so it lines up with metric prefixes. 12,345 is written 12.345 × 10³.
数字的大小顺序是什么?
It is the power of ten in its scientific notation — the exponent. For 12,345 the order of magnitude is 4.
我能把电子批注转换成普通数字吗?
Yes. Type a value like 1.2e5 and the converter expands it to the standard form 120000.
科学符号中写得非常少的数字是怎样的?
They use a negative exponent. 0.00045 becomes 4.5 × 10⁻⁴, moving the point four places to the right.
API - 使用代码中的计算器
将此计算器称为自由 JSON 端点 。 不需要按键 。 将字段值发送到下面作为查询参数或 JSON 。 任何您省略的, 都会使用相同的默认值, 此页面预填的默认值是预填的; 未知参数是 400, 而不是静音零 。 读取 API 全部文件 →
终点
GET https://calculator.free/api/v1/scientific-notation/curl
curl "https://calculator.free/api/v1/scientific-notation/?number=12345"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/scientific-notation/?" + new URLSearchParams({
"number": "12345"
}));
const data = await r.json();
console.log(data.results);成果仅是一般指导的估计数,而不是财务、医疗或税务咨询。