100% Free

Tools & Calculators

Simple, science-backed tools to improve your productivity, health, and wellness. No signup required.

Productivity Tools

Work Time Calculator

Track your productivity hours and optimize your work schedule

Free

Date & Time Calculator

Calculate date differences, add/subtract time, and plan events

Free

Age Calculator

Calculate your exact age in years, months, days, and hours

Free

Health & Wellness Tools

Sleep Debt Calculator

Calculate your sleep debt and get personalized recommendations for better rest

Free

Eye Strain Test

Quick assessment to check if you're experiencing digital eye strain

Free

Stress Score Calculator

Evaluate your stress levels and get actionable wellness tips

Free

Gratitude Journal Generator

Create personalized gratitude prompts to boost your mood

Free

Fitness Tools

TDEE Calculator

Calculate your Total Daily Energy Expenditure for fitness goals

Free

Finance Tools

Expense Split Calculator

Split bills and expenses fairly between friends or groups

Free

Tip Calculator

Calculate tips and split restaurant bills easily

Free

Budget Calculator

Plan your monthly budget with the 50/30/20 rule

Free

Want More? Try Our Apps

Get advanced features, offline access, and seamless tracking with our iOS and Mac apps.

Settle Up

Split bills and expenses with friends effortlessly

FinFlair

Smart budgeting and expense tracking

SleepRiddle

Track and improve your sleep quality

View All Apps →