Calculator Directory
Every Fast Calculator tool in one place, organized for quick access.
Everyday & Finance
Percentage Calculator
Calculate percentages quickly.
Age Calculator
Find exact age from date of birth.
BMI Calculator
Calculate BMI from height and weight.
Loan / EMI Calculator
Estimate monthly loan payments.
Date Calculator
Calculate the difference between dates.
Discount Calculator
Find savings and final price.
Compound Interest
Calculate compound growth.
Tip Calculator
Calculate tip and total bill.
Profit Margin
Calculate profit and margin.
Average Calculator
Calculate the average.
Simple Interest
Calculate simple interest.
Zakat Calculator
Estimate annual Zakat.
Salary Calculator
Convert salary to pay periods.
Gold Calculator
Estimate gold value.
Investment Calculator
Project investment growth.
Electricity Bill
Estimate energy charges.
Car Loan Calculator
Estimate vehicle payments.
Scientific Calculator
Advanced calculations.
Unit Converters
Length Converter
Convert length units.
Weight Converter
Convert mass units.
Temperature Converter
Convert temperature scales.
Area Converter
Convert square units.
Volume Converter
Convert volume units.
Speed Converter
Convert speed units.
Time Converter
Convert durations.
Data Storage Converter
Convert storage sizes.
Energy Converter
Convert energy units.
Pressure Converter
Convert pressure units.
Power Converter
Convert power units.
Frequency Converter
Convert frequency units.
Angle Converter
Convert angle units.
Student Calculators
GPA Calculator
Calculate grade point average.
Grade Calculator
Calculate a grade percentage.
Final Grade Calculator
Find required final score.
Weighted Grade Calculator
Calculate weighted grades.
Exam Score Calculator
Calculate exam percentage.
Percentage Grade Calculator
Convert percentage to letter grade.
Semester GPA Calculator
Estimate semester GPA.
College GPA Calculator
Estimate cumulative GPA.
Home & Construction
Concrete Calculator
Estimate concrete volume.
Square Footage Calculator
Calculate surface area.
Flooring Calculator
Estimate flooring material.
Paint Calculator
Estimate paintable area.
Tile Calculator
Estimate tiles needed.
Roofing Calculator
Estimate roof area.
Gravel Calculator
Estimate gravel volume.
Mulch Calculator
Estimate garden mulch.
Room Area Calculator
Calculate room area.
Health & Fitness
BMR Calculator
Estimate basal metabolic rate.
Calorie Calculator
Estimate daily calories.
Macro Calculator
Estimate protein, carbs, and fat.
Ideal Weight Calculator
Estimate ideal weight.
Body Fat Calculator
Estimate body fat percentage.
Water Intake Calculator
Estimate daily water intake.
Pace Calculator
Calculate running pace.
Running Calorie Calculator
Estimate calories burned running.
New Finance Calculators
Mortgage Calculator
Estimate home loan payments and interest.
Sales Tax Calculator
Add or remove sales tax.
VAT Calculator
Find net, VAT, and gross prices.
Fuel Cost Calculator
Estimate trip fuel and cost.
Retirement Calculator
Project retirement savings.
Savings Calculator
Estimate compound savings growth.
Loan Payoff Calculator
Estimate payoff time and interest.
Net Worth Calculator
Compare assets and liabilities.
ROI Calculator
Calculate profit and return.
Inflation Calculator
Compare future purchasing power.
New Math Calculators
Fraction Calculator
Operate and simplify fractions.
Ratio Calculator
Simplify ratios.
Proportion Calculator
Solve a missing value.
Standard Deviation
Measure data spread.
Variance Calculator
Calculate population and sample variance.
Quadratic Equation
Find real or complex roots.
Pythagorean Theorem
Find a missing triangle side.
LCM & GCD
Find shared factors and multiples.
Exponent Calculator
Calculate powers and roots.
Random Number Generator
Generate random integers.
New Date & Time Calculators
New Health & Fitness Calculators
New Home & Construction Calculators
New Everyday & Family Tools
Split Bill Calculator
Divide a tipped bill.
Grocery Budget
Estimate household grocery spending.
Commission Calculator
Calculate sales commission.
Markup Calculator
Calculate selling price and margin.
Break-Even Calculator
Find units and revenue to break even.
Unit Price Calculator
Compare product value.
Pregnancy Due Date
Estimate a due date.
Ovulation Calculator
Estimate fertile window.