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Million Digit Base-N Calculator

2000 digit (URL Calc) or 1 million digit (slow page load)*

Accepts number bases (radix) from base 2 to base 8649 with the following digits*
0123456789abcdefghijklmnopqrstuvwxyz!"#$%&'()*+,-/:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`{|}~
First number base
0 2nd number base
0
Function: convert count digits compare add subtract multiply divide modulous pow ^int square root to base Limit output to digits

• No warrantee: Usage constitutes agreement with our Terms of Service.
• Now accepts JavaScript programs and decimal.js API in base 10 inputs.
• Precision of decimal.js API has been raised to 2000 digits.
• Examples: PI=acos(-1) or log10(480).mul(3); Click to try them.
• Due to URL length limits, numbers > 900 digits may not bookmark properly.
• Slow page load: Please be aware that 1 million digit mode could result in lots of output which consumes bandwidth and takes several minutes to download.
• Bases 94 to 8649 (max) are represented as pairs of base 93 digits.
• *To increase max bases, put more characters in the first box, such as™€®†.
• Keep in mind that some characters may not display on all platforms.
• To compute text, one might add space, period, and enter to the box of available characters.
• *If you add the period character, decimal points will not work as expected.
• Note that decimal numbers are truncated at the output limit, not rounded off.
• Converting to / from base 64 is not the same as base64 mail attachment (mime) format. For that, use base64 encode/decode
• Changelog.
  Created 9/2002 by Henry Kroll, comptune.com.
  Updated 11/23/2017 to compute long decimals in any number base.
  Updated 11/24/2017 with extended, two-digit number bases.
  Updated 11/25/2017 for Javascript Decimal API.
  Bugfix 6/14/2019 Did it ever work?
• Find another bug? Click to send a support message.