The Utility Lab
Free tools that do one thing well.
No sign-ups, no pop-ups, no tracking. Type a number, get an answer.
BMI Calculator
Body Mass Index in metric or imperial, with an instant category readout.
Your BMI
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BMI is a general screening tool and doesn't account for muscle mass. For health decisions, consult a professional.
Tip Calculator
Figure the tip, total, and per-person split with custom percentages.
Tip percentage
Tip—
Total—
Per person—
Unit Converter
Convert length, weight, volume, and temperature between common units.
From
To
0.1