Browse every free calculator and unit converter on ConversionsHome in one place. All 138 tools are free, work instantly in your browser, and need no sign-up.
Calculator (20)
- Average Calculator
- CGPA Calculator - Semester GPA
- Date Difference Calculator
- GPA Calculator - Grade Point Average
- GPA to Percentage Calculator - All Scales
- Marks Percentage Calculator - Score to Percent
- Matrix Calculator: Add, Multiply, Determinant
- Online Calculator - Free Basic Calculator
- Percent Error Calculator: Experimental vs True Value
- Percentage Calculator
- Probability Calculator: Odds for Single Events
- Prime Factorization Calculator with Factor Tree
- Quadratic Formula Calculator
- Ratio Calculator - Solve A:B = C:X
- Sample Size Calculator
- Slope Calculator: Rise Over Run Between Points
- Standard Deviation Calculator: Stats Tool
- University Merit Calculator - Weighted Aggregate
- Final Grade Calculator
- P-Value Calculator: Z and T Test Significance
Converters (14)
- Area Converter (m2, ft2, acres)
- Data Storage Converter (GB to MB, KB, TB)
- Energy Converter (kWh, joules, kcal, BTU)
- Frequency Converter (Hz, kHz, MHz, GHz)
- Length Converter (m, ft, in, cm, km)
- Microliter to Milliliter Converter (µL to mL) - Lab Volume
- Power Converter (kW to hp, watts, BTU/h)
- Pressure Converter (psi to bar, kPa, atm)
- Speed Converter (km/h to mph, m/s, knots)
- Temperature Converter (C to F, K)
- Time Converter
- Volume Converter (litres to gallons)
- Weight Converter (kg to lb, oz, g)
Finance (44)
- Compound Interest Calculator
- Car Loan EMI Calculator - Monthly Payment
- College Cost Calculator
- Discount Calculator
- EMI Calculator
- Future Value Calculator
- Gold Zakat Calculator - Tola, Gram & Ounce
- Loan Calculator - Monthly Payment
- Mortgage Calculator - Monthly Payment
- Pakistan Salary Tax Calculator 2026 - FBR Slabs (Tax Year 2026-27)
- Present Value Calculator
- Sales Tax Calculator
- Simple Interest Calculator
- SIP Calculator: Monthly Investment Growth Planner
- Tip Calculator
- Zakat Calculator
- Take Home Pay Calculator
- Salary to Hourly Calculator
- Retirement Calculator: How Much to Retire
- Student Loan Calculator: Payment + Payoff
- Debt Payoff Calculator: Snowball vs Avalanche
- Amortization Calculator with Extra Payments
- 50/30/20 Budget Calculator
- Inflation Calculator
- Debt to Income Ratio Calculator
- Down Payment Calculator: House & Car (USA)
- Roth IRA Calculator
- HELOC Calculator: Home Equity Line Payments
- Traditional IRA Calculator: Growth and Tax Savings
- ROI Calculator: Return on Investment Percent
- CD Calculator: Certificate of Deposit Growth
- Rent vs Buy Calculator: Break-Even Year Compared
- Pension Calculator: Estimate Monthly Pension Benefit
- Depreciation Calculator: Straight-Line and Declining
- Debt Consolidation Calculator: Payoff Options
- APR Calculator: True Cost of Your Loan
- 401K Calculator with Employer Match
- Credit Card Payoff Calculator: Debt-Free Date
- House Affordability Calculator: What You Can Afford
- Mortgage Payoff Calculator: Extra Payments
- Refinance Calculator: Break-Even and Savings
- Savings Calculator: Grow Your Deposits Over Time
- RMD Calculator: Required Minimum Distribution by Age
- Personal Loan Calculator
Health (26)
- Age Calculator
- BMI Calculator - Body Mass Index
- BMI Prime Calculator
- BMR Calculator - Basal Metabolic Rate
- Body Fat Percentage Calculator
- Body Surface Area Calculator
- Body Type Calculator
- Calorie Calculator
- Carbohydrate Calculator: Daily Carb Needs
- Daily Water Intake Calculator
- One Rep Max Calculator: 1RM & Training %
- Running Pace Calculator: Min/Km & Race Time
- Sleep Calculator
- TDEE Calculator: Daily Calorie Needs, Any Units
- Due Date Calculator: Pregnancy Week by Week
- Period Calculator: Predict Your Next Period Date
- Lean Body Mass Calculator: LBM & Body Fat %
- Waist to Hip Ratio calculator
- FFMI Calculator: Muscle Score & Natural Limit
- GFR Calculator: Kidney Function by Creatinine
- Pregnancy Calculator: Weeks, Due Date, Trimester
- Conception Calculator: Estimate Conception Date
- Calories Burned Calculator by Activity
- Macro Calculator: Protein, Carbs and Fat
- Ovulation Calculator: Find Your Fertile Window
- Protein Calculator: Find Your Daily Protein Needs by Goal
Math (9)
- Exponent Calculator - Powers and Exponents
- Factorial Calculator - n! Free Online
- Fraction Calculator
- Logarithm Calculator - Log Any Base
- Scientific Calculator
- Scientific Notation Converter - Standard Form
- Square Root Calculator - Free Online
- Confidence Interval Calculator with Examples
- Z-Score Calculator
Tools (10)
- Pakistan Electricity Bill Calculator 2026 - NEPRA Slab Rates
- Random Number Generator
- Solar Savings Calculator - Net Metering
- Gas Mileage Calculator
- Square Footage Calculator
- Time Card Calculator
- Auto Lease Calculator: Estimate Your Monthly Payment
- Concrete Calculator: Cubic Yards and Bags
- Tire Size Calculator: Compare and Speedometer
- Roman Numeral Converter: Numbers to Numerals
Biology (7)
- BMR Calculator - Basal Metabolic Rate
- Body Fat Percentage Calculator
- Cat Food Calculator: Daily Feeding Amount by Weight
- Dog Age Calculator: Human Years & Formula
- Dog Food Calculator: How Much to Feed Your Dog Daily
- Horse Weight Calculator: Tape Method
- TDEE Calculator: Daily Calorie Needs, Any Units
Chemistry (5)
- Dilution Calculator: C1V1 = C2V2 Solver
- Ideal Gas Law Calculator - PV = nRT
- Molar Mass Calculator: Formula to g/mol
- Molarity Calculator: Moles, Volume & Concentration
- pH Calculator: pH, pOH, [H+], [OH-] Converter