Logarithm Calculator
Calculate log in any base, ln and log10.
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About the Logarithm Calculator
Calculate log10, natural log (ln, base e) and logarithms in any base. A logarithm answers the question: to what power must the base be raised to get this number?
Formula
logb(x) = ln(x) ÷ ln(b). For example log2(64) = 6 because 26 = 64.
Used in chemistry (pH), sound (decibels), finance and computer science.
لاگرتھم کیلکولیٹر
log10، قدرتی لاگ (ln) اور کسی بھی بیس میں لاگ معلوم کریں۔ مثال: log₂(64) = 6۔
- کیمسٹری، فزکس اور فنانس میں استعمال
- بیس تبدیل کرنے کا فارمولا شامل
How to use Logarithm Calculator
- Enter your values. Units and defaults are shown beside each field.
- Press Calculate (results also update as you type once calculated).
- Read the result and the step-by-step breakdown with the formula used.
- Copy the result or reset to start again.
Frequently asked questions
How accurate is this calculator?
Calculations use the standard formulas shown on the page, computed in full precision and rounded only for display. The result is only as accurate as the inputs and assumptions listed.
Is it free?
Yes. All tools are free to use without an account.