All Calculators

Mortgage Calculator

Monthly payments & amortization

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Loan Calculator

Personal, auto & student loans

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Auto Loan Calculator

Car loan payments & interest

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Tax Calculator

Federal income tax estimator

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Sales Tax Calculator

Calculate sales tax on purchases

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Compound Interest

Investment growth projection

Simple Interest

Simple interest on principal

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Investment Calculator

Project investment growth

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CD Calculator

Certificate of deposit earnings

Annuity Calculator

Annuity payments & future value

Present Value

Present value of future money

Future Value

Future value of an investment

IRR Calculator

Internal rate of return

ROI Calculator

Return on investment

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Tip Calculator

Split bills with tip

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Discount Calculator

Sale price & savings

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Affordability Calculator

How much house can I afford

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Retirement Calculator

Retirement savings projection

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Currency Converter

40+ world currencies

Health & Fitness Calculators (12)

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BMI Calculator

Body Mass Index & category

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BMR Calculator

Basal Metabolic Rate

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Body Fat Calculator

US Navy body fat method

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Calorie Calculator

Daily TDEE & macros

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Macro Calculator

Protein, carb & fat macros

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Ideal Weight Calculator

Ideal body weight by height

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Pace Calculator

Running pace & speed

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Calories Burned

Exercise calories burned

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One Rep Max

1RM lift estimation

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Target Heart Rate

Heart rate training zones

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Body Surface Area

Du Bois & Mosteller BSA

child_friendly

Pregnancy Calculator

Due date & timeline

Math & Education Calculators (10)

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Percentage Calculator

Percent of, increase, decrease

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Fraction Calculator

Add, subtract, multiply, divide

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Scientific Calculator

Trig, log, exponential

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LCM Calculator

Least Common Multiple

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GCF Calculator

Greatest Common Factor

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Ratio Calculator

Simplify & solve ratios

Standard Deviation

Mean, variance, SD, median

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GPA Calculator

Grade point average

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Grade Calculator

Final grade from assignments

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Days Between Dates

Date difference calculator

Time & Productivity Calculators (5)

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Age Calculator

Exact age in years, months, days

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Unit Converter

Length, weight, temp, volume

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Time Zone Converter

Convert between world time zones

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Word Counter

Words, characters, reading time

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Countdown Timer

Days until a target date

UK-Specific Calculators (12)

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UK Tax Calculator

Income tax & National Insurance

UK Mortgage Calculator

Monthly payment & Stamp Duty

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UK Affordability Calculator

How much can I borrow

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UK Retirement Calculator

Pension pot & State Pension

UK Salary Calculator

Take-home pay & salary sacrifice

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UK National Insurance

Class 1 NI contributions

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UK Savings Calculator

ISA & savings growth

UK Stamp Duty

SDLT on property purchases

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UK Car Finance

PCP, HP & PCH payments

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UK Credit Card

Repayment time & interest

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UK Personal Loan

Monthly payments & interest

UK Interest Rate

Compare bank savings rates

India-Specific Calculators (4)

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India Salary Calculator

Take-home pay, CTC & tax (New vs Old)

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SIP + SWP Calculator

Mutual fund SIP with step-up & SWP