The Library
Every calculator, one place.
Twenty-six professional calculators across eight categories. Search or browse — pick a tool and get a result in seconds.
01
Income & Pay
7 toolsAI Insight
Paycheck Calculator
Calculate your take-home pay
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AI Insight
Hourly to Salary
Convert hourly rate to salary
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AI Insight
Salary to Hourly
Convert salary to hourly rate
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AI Insight
Overtime Calculator
Regular, OT, and double-time pay
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AI Insight
Salary Comparison
Compare two job offers
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AI Insight
Freelance Rate
Find your hourly rate
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AI Insight
Freelance Tax
Estimate self-employment taxes
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02
Taxes
2 tools03
Loans & Debt
4 tools04
Investments & Retirement
7 toolsAI Insight
Compound Interest
See your money grow
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AI Insight
Simple Interest
Quick interest math
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AI Insight
ROI Calculator
Calculate return on investment
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AI Insight
401k Retirement
Plan your retirement savings
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AI Insight
FIRE Calculator
Financial independence target
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AI Insight
Savings Goal
Reach your savings target
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AI Insight
Investment Calculator
Compound growth projection
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05
Everyday & Health
13 toolsAI Insight
Tip Calculator
Split bills with tip
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AI Insight
BMI Calculator
Body Mass Index assessment
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AI Insight
Solar Savings
Calculate solar energy savings
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AI Insight
Time Calculator
Add & subtract time
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AI Insight
Countdown
Count down to any date
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AI Insight
Hours Calculator
Hours between two times
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AI Insight
PTO Calculator
Vacation & sick leave balances
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AI Insight
Emergency Fund
3/6/12 month targets
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AI Insight
Inflation Calculator
Understand purchasing power
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AI Insight
Net Worth
Track your net worth
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AI Insight
GPA Calculator
Calculate GPA from courses
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AI Insight
Percentage Calculator
Calculate percentages
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AI Insight
Age Calculator
Exact age calculation
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