Does Common Logs upload my file or text to Tool-You servers?

No. Common Logs runs in this browser tab. Files stay on the device. Limit note: Value must be > 0.

Should I use Logarithm instead of Common Logs?

Use Common Logs when you need ln / log2 / log10. Use Logarithm when you need Log with ln and base. They share a category (Calculate) but not the same job.

Common Logs

ln / log2 / log10.

Choose natural, base-2, or base-10 log. Value must be > 0. log10(100)=2. For arbitrary bases use the log-base tool.

What Common Logs does

Choose natural, base-2, or base-10 log. Value must be > 0. log10(100)=2. For arbitrary bases use the log-base tool.

Practical limit for Common Logs: Value must be > 0. That is why output can differ from heavy desktop Calculate software. Read the tool-specific note again: Choose natural, base-2, or base-10 log. Value must be > 0. log10(100)=2. For arbitrary bases use the log-base tool.

How to use Common Logs

Confirm you need Common Logs, not Logarithm (Log with ln and base.). Address: /calculate/common-log.
Enter the numbers or dates Common Logs uses. ln / log2 / log10.
Read the result as Common Logs defines it — not as Inverse Trig (asin/acos/atan and more, radians out.). Choose natural, base-2, or base-10 log. Value must be > 0. log10(100)=2. For arbitrary bases use the log-base tool.
Common Logs is an estimate in the browser, not professional advice. Value must be > 0.
Need a different formula? Try Inverse Trig (asin/acos/atan and more, radians out.) instead of stretching Common Logs.

When not to use Common Logs

Skip Common Logs when a neighbor tool matches better — start with Logarithm or Inverse Trig — or when the description already warns the job will fail. In the tool’s own words: Choose natural, base-2, or base-10 log. Value must be > 0. log10(100)=2. For arbitrary bases use the log-base tool.

Questions about Common Logs

What does Common Logs do that other Calculate pages on this site do not?: Choose natural, base-2, or base-10 log. Value must be > 0. log10(100)=2. For arbitrary bases use the log-base tool. Short version: ln / log2 / log10.
Does Common Logs upload my file or text to Tool-You servers?: No. Common Logs runs in this browser tab. Files stay on the device. Limit note: Value must be > 0.
Should I use Logarithm instead of Common Logs?: Use Common Logs when you need ln / log2 / log10. Use Logarithm when you need Log with ln and base. They share a category (Calculate) but not the same job.
What are the limits of Common Logs?: Value must be > 0. Also: Choose natural, base-2, or base-10 log. Value must be > 0. log10(100)=2. For arbitrary bases use the log-base tool.