Nutter Tools
Nutter Tools

A free toolbox that runs in your browser. A tool for every job.

Your files never leave your device

Images

  • Convert images
  • Compress images
  • Resize images
  • Crop
  • Watermark

PDF & files

  • Merge PDFs
  • Split a PDF
  • Images to PDF
  • PDF to images
  • Remove photo location

Video & audio

  • Compress video
  • Convert video
  • Video to GIF
  • Convert audio
  • Trim audio

Everyday

  • QR codes
  • Passwords
  • Time zones
  • Unit converter
  • Word count
  • Webcam test

Developer

  • JSON formatter
  • Base64
  • Regex tester
  • Hashes
  • JWT decoder

Site

  • About
  • Contact
  • Settings
  • Privacy
  • Terms
  • Site map
  • llms.txt

Everyday

  • Images
  • Video
  • Audio
  • PDF & files
  • Text
  • QR codes
  • Units & math
  • Time & dates
  • Color
  • Passwords & IDs
  • Device tests
  • Sun & moon

For developers

  • JSON
  • Encoding
  • Regex & cron
  • Web & auth
  • Hashing & encryption
  • Config files
  • Network
  • Browser
  • AI
  • Fake data
© Nutter Toolsnutter.tools
  1. Home
  2. Units & math
  3. Alcohol BAC calculator
Your files stay on your device

Alcohol BAC calculator

Estimates blood alcohol concentration with the Widmark formula from drinks, strength, weight and hours, with a time-to-zero estimate.

This tool is in beta

Still being tested. If a result looks wrong, tell us.

Report a problem

Enter your details and drinks for an estimate.

This is the Widmark formula over what you typed, which makes it a population-average estimate, never a test. It cannot see what you ate, your tolerance, medication, or how generously the drinks were poured. It is not a guide for driving: legal limits vary by country and there is no level of alcohol that makes operating a vehicle safe. Nothing you type is sent anywhere or stored.

About you, then what you drank

Weight in
Body type for the formulaSets the Widmark factor r
Drink volumes in

Weights stay under 100,000, sessions list up to 50 drinks, and the custom r runs 0.3 to 1. Nothing you type leaves this tab.

More unit & math tools

  • Unit converter
  • Average and median
All unit & math tools

Was this tool useful?