Advanced logarithmic calculation tool
If $a$ raised to the power of $n$ equals $x$ ($a>0$, and $a \ne 1$), then $n$ is called the logarithm of $x$ to base $a$, written as $n = \log_a x$.
Logarithm with base 10, denoted as lg or $\log_{10}$. Widely used in science and engineering (e.g., pH, Decibels, Richter scale).
Logarithm with base $e$ ($e \approx 2.718...$), denoted as ln or $\log_e$. Fundamental in calculus, compound interest, and growth models.
Note: Logarithms of zero are undefined ($\log_a 0 \to -\infty$), and logarithms of negative numbers are undefined in the real number system.
Select "Custom" (or "其它") in the Base options. An additional input box will appear. Enter your desired base (e.g., 5) there, then enter the value in the main input field.
Logarithms are only defined for positive arguments ($x > 0$) and positive bases ($a > 0, a \ne 1$). If you enter a negative number or zero, the result is undefined in real numbers.
This tool uses standard double-precision floating-point arithmetic (IEEE 754). Results are precise up to approximately 15-17 decimal digits. We display up to 8 decimal places for readability.
Log finds the exponent (what power creates this number?). Antilog reverses this (calculating the base raised to a power). For example, $\log_{10}(100) = 2$, and antilog of 2 (base 10) is $10^2 = 100$.
Y’all know that pain when calc or engineering problems hit you with log math and you’re over here fumbling with formulas? 😭 Enter this chef’s kiss tool: the Log/Antilog Calculator. Whether it’s common logs, natural logs, or random bases, plug in a number and boom – instant results. No more flipping through textbooks like a maniac 📚
Q: Why’s there no result when I type a number?
A: Did you use 0 or a negative? Swap it for a positive – logs hate non-positives.
Q: Can I calculate antilogs?
A: Antilogs are just exponents – reverse the math. The tool’s adding direct antilog support later, though.
Q: Does this work on my phone?
A: 100% – it’s mobile-friendly, so you can calculate on the go.
When log math hits, this tool’s your new ride-or-die. Saves time, avoids headaches, and makes you look like a math genius (even if you’re winging it). Save the link – you’ll thank me later. Share it with your homies so y’all can skip the log struggle together 🚀
谁懂啊家人们！学微积分、做工程题时被对数运算虐到崩溃😫 直到挖到这个宝藏工具——对数/反对数计算器，不管是常用对数、自然对数还是任意底数，输入数值直接出结果，再也不用翻公式本死磕啦！📚
Q：输入数字后没结果？
A：检查是不是输了 0 或负数！换个正数再试试～
Q：想算反对数怎么办？
A：本质是指数运算，反向推导就行，工具后续也会更新直接计算功能哦～
Q：手机上能用吗？
A：完全可以！页面移动适配超棒，小屏也能清晰操作～
不管是学习还是工作，遇到对数运算直接冲这个工具就对啦！省时省力还精准，数学小白也能秒变大神～ 赶紧收藏链接，下次用的时候直接找！觉得有用就分享给同学/同事，一起告别运算烦恼呀🌟