Calculators
Every tool, in one place.
200+ live. Pick a category below or use ⌘K from anywhere on the site.
Finance
Loans, savings, investments, and money tools.
Amortization Schedule Calculator
Generate a complete amortization schedule for your loan.
Reverse Mortgage Calculator
Estimate payouts from a reverse mortgage.
Cap Rate Calculator
Calculate the capitalization rate of a real estate investment.
Return on Equity (ROE) Calculator
Calculate the return on equity for your business or investments.
Customer Acquisition Cost Calculator
Calculate your CAC (Customer Acquisition Cost).
Customer Lifetime Value Calculator
Calculate the LTV of your average customer.
Health
BMI, calories, fitness, and wellness calculators.
BMI Calculator
Body Mass Index calculator with healthy weight ranges and visual feedback.
Calorie Calculator
Daily calorie needs (TDEE) based on age, weight, height and activity level.
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method with measurements.
BMR Calculator
Calculate Basal Metabolic Rate — calories your body burns at complete rest.
Water Intake Calculator
Calculate your recommended daily water intake based on weight, activity, and climate.
Ideal Weight Calculator
Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi formulas.
Education
GPA, grades, attendance, and academic tools.
GPA Calculator
Calculate semester and cumulative GPA across multiple grading systems.
Attendance Calculator
Track attendance percentage and calculate classes needed to meet requirements.
CGPA to Percentage Calculator
Convert CGPA to percentage and vice-versa for major university grading systems.
Percentage Marks Calculator
Calculate your percentage from marks obtained and total marks instantly.
Grade Calculator
Calculate your current grade, what you need on your final, and weighted GPA.
Typing Speed Calculator
Test your typing speed in WPM with real-time accuracy tracking and history.
General
Age, percentage, ratios, and everyday math.
Age Calculator
Calculate your exact age in years, months, weeks, days, hours and minutes.
Percentage Calculator
Calculate percentages, increases, decreases, and percentage differences.
Discount Calculator
Calculate discount amount, sale price, and savings from any percentage off.
Tip Calculator
Calculate tip amount, total bill, and per-person split for any group size.
Age Difference Calculator
Calculate the exact age difference between two people in years, months, and days.
Average Calculator
Calculate mean, median, mode, weighted average, and standard deviation.
Conversion
Length, weight, temperature, and unit converters.
Unit Converter
Convert between length, weight, area, volume, temperature, speed, time and data.
Cooking Measurement Converter
Convert cooking measurements between cups, ml, tablespoons, grams, and more.
Clothing Size Converter
Convert clothing sizes between US, UK, EU, AU, and international systems.
Shoe Size Converter
Convert shoe sizes between US, UK, EU, CM, and JP for men, women, and kids.
Color Code Converter
Convert colors between HEX, RGB, HSL, and HSV with live preview.
Binary / Hex Converter
Convert between binary, decimal, hexadecimal, and octal number systems.
Utility
Time, dates, and other day-to-day helpers.
Date Difference Calculator
Calculate the gap between two dates in years, months, days, weeks, hours, and business days.
Time Zone Converter
Convert any time across 25+ major cities worldwide — DST and offsets handled automatically.
Word Counter
Count words, characters, sentences, paragraphs, and estimate reading time instantly.
Fuel Cost Calculator
Calculate fuel cost for a trip based on distance, mileage, and fuel price.
Time Calculator
Add, subtract, and convert between hours, minutes, and seconds easily.
Business Days Calculator
Count business days (weekdays) between two dates, excluding weekends.
Math & Stats
Geometry, algebra, statistics, and complex math.
Velocity Calculator
Calculate velocity based on distance and time.
Acceleration Calculator
Calculate acceleration based on change in velocity.
Kinetic Energy Calculator
Calculate the kinetic energy of a moving object.
Ohms Law Calculator
Calculate voltage, current, or resistance.
Resistor Color Code Calculator
Decode resistor bands to find resistance.
Voltage Divider Calculator
Calculate the output voltage of a divider circuit.
Technology
Networking, hashing, base64, and dev tools.
IP Subnet Calculator
Calculate subnet masks, CIDR notation, network, and broadcast addresses.
UNIX Timestamp Converter
Convert epoch timestamps to human-readable dates and vice versa.
Base64 Encode/Decode
Easily encode text to Base64 or decode Base64 strings to text.
UUID / GUID Generator
Generate bulk Version 4 UUIDs instantly in your browser.
Hash Generator
Generate secure MD5, SHA-1, and SHA-256 hashes instantly.
Password Generator
Generate highly secure, randomized passwords locally in your browser.
All Calculators A–Z
Every tool on OurDailyCalc, linked for easy access.
Calculator Guides & Articles
In-depth guides for every calculator.
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