Free Online Calculators for Nigeria
NaijaMath gives you simple, free and accurate calculators for money, housing, tax, health, math and more.
Popular Categories
PAYE Tax Calculator (Nigeria Finance Act)
Calculate your monthly Pay As You Earn (PAYE) tax liability based on current Nigerian tax laws.
Open Calculator →Take-Home Pay Calculator
See your actual money after tax, pension, and NHF deductions.
Open Calculator →Electricity Bill Estimator
Estimate your monthly electricity bill based on NERC tariff bands.
Open Calculator →Fuel Trip Cost Calculator
Calculate the cost of fuel for a road trip in Nigeria.
Open Calculator →Inflation & Purchasing Power
Check how much value your Naira has lost over time.
Open Calculator →Black Market FX Converter
Convert Naira to USD, GBP, EUR using real street rates.
Open Calculator →Generator Running Cost
Estimate how much you spend on fuel for your generator monthly.
Open Calculator →House Rent True Cost Calculator
Calculates real rent cost including Agency, Legal, Agreement and Caution fees.
Open Calculator →Import Duty & Clearing Cost Estimator
Estimates import duty + clearing cost based on item category and destination port.
Open Calculator →Land Size & Plot Converter
Convert between Plots, Square meters, Acres, and Hectares.
Open Calculator →Bank Transfer Fee Calculator
Shows actual transfer charges by bank and amount including Electronic Money Transfer Levy (Stamp Duty).
Open Calculator →School Fees Comparison Tool
Compare average school fees by state, public vs private, and day vs boarding.
Open Calculator →Court Affidavit Cost Estimator
Estimates affidavit cost by state and purpose.
Open Calculator →Small Business CAC Cost Calculator
Estimates CAC registration cost based on business type and filing method.
Open Calculator →'Japa' Relocation Budget
Estimate the initial cost to relocate (UK/Canada scale).
Open Calculator →Standard VAT Calculator (7.5%)
Calculate Value Added Tax (VAT) for goods and services in Nigeria.
Open Calculator →Margin & Markup Calculator
Calculate your profit margin and markup percentages.
Open Calculator →Break-Even Point Calculator
Find out how many units you need to sell to cover your costs.
Open Calculator →BMI Health Calculator
Calculate your Body Mass Index (BMI) to check your health status.
Open Calculator →Pregnancy Due Date Tracker
Estimate your delivery date based on your Last Menstrual Period (LMP).
Open Calculator →Percentage & Fraction Tools
Solve common percentage problems easily.
Open Calculator →Ajo / Esusu Savings Estimator
Plan your contribution rounds and total collection amount.
Open Calculator →Mortgage & Home Loan Calculator
Estimate your monthly mortgage payments for a home in Nigeria.
Open Calculator →Simple Interest Calculator
Calculate simple interest on savings or a loan.
Open Calculator →Compound Interest Calculator
Calculate how your money grows with compound interest.
Open Calculator →Auto Loan Calculator
Calculate monthly payments for a car loan.
Open Calculator →Investment Growth Calculator
Estimate the future value of your investments (Stocks, TBills, etc).
Open Calculator →Daily Calorie Calculator
Estimate how many calories you need daily based on your activity level.
Open Calculator →Body Fat Percentage
Estimate your body fat percentage using the US Navy method.
Open Calculator →Ideal Weight Calculator
Calculate your ideal body weight based on height using various formulas.
Open Calculator →Daily Water Intake
Find out how much water you should drink daily.
Open Calculator →BMR (Basal Metabolic Rate)
Calculate your BMR - the calories you burn at rest.
Open Calculator →Age Calculator
Calculate your exact age in years, months, and days.
Open Calculator →Date +/- Calculator
Add or subtract days, weeks, months, and years to a specific date.
Open Calculator →Time Duration Calculator
Calculate the duration between two times or add/subtract time.
Open Calculator →Grade Calculator
Determine what score you need on your final exam to reach a target grade.
Open Calculator →University GPA (5.0/4.0 Scale)
Calculate your semester GPA based on Nigerian university standards (NUC).
Open Calculator →Fraction Calculator
Perform addition, subtraction, multiplication, and division of fractions.
Open Calculator →GCD & LCM Calculator
Find the Greatest Common Divisor and Least Common Multiple of multiple numbers.
Open Calculator →Random Number Generator
Generate one or more random numbers within a specified range.
Open Calculator →Ratio Calculator
Simplify ratios or find the missing value in a proportion.
Open Calculator →Factorial Calculator
Calculate the factorial (n!) of a non-negative integer.
Open Calculator →Area Calculator
Calculate the area of various 2D shapes (Circle, Square, Triangle, etc.).
Open Calculator →Volume Calculator
Calculate the volume of various 3D objects (Sphere, Cylinder, Cone, etc.).
Open Calculator →Statistics Calculator
Calculate Mean, Median, Mode, Range, and Variance for a data set.
Open Calculator →Standard Deviation Calculator
Calculate the standard deviation of a data set (population or sample).
Open Calculator →Probability Calculator
Calculate basic probability (event likelihood) given favorable and total outcomes.
Open Calculator →Permutation & Combination
Calculate nPr (permutations) and nCr (combinations).
Open Calculator →Z-Score Calculator
Calculate the Z-score (standard score) for a value in a distribution.
Open Calculator →Quadratic Formula Calculator
Solve ax² + bx + c = 0 using the quadratic formula.
Open Calculator →Ohm's Law Calculator
Calculate Voltage (V), Current (I), Resistance (R), or Power (P) using Ohm's Law.
Open Calculator →Voltage Drop Calculator
Calculate the voltage drop in a cable based on length, current, and wire gauge.
Open Calculator →Resistor Color Code
Calculate resistance value from color bands or find colors from value.
Open Calculator →IP Subnet Calculator
Calculate subnet details from an IP address and CIDR notation.
Open Calculator →Bandwidth Calculator
Calculate download/upload time or required bandwidth for file transfers.
Open Calculator →Concrete Calculator
Calculate the volume of concrete needed for slabs, columns, or footings.
Open Calculator →BTU Calculator
Estimate the BTU (cooling/heating) needed for a room.
Open Calculator →Roofing Calculator
Estimate roofing materials (bundles of shingles) needed for a project.
Open Calculator →Length Converter
Convert between meters, feet, inches, miles, kilometers, and more.
Open Calculator →Weight/Mass Converter
Convert between kilograms, pounds, grams, ounces, and more.
Open Calculator →Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin.
Open Calculator →Speed Converter
Convert between km/h, mph, m/s, knots, and more.
Open Calculator →Data Storage Converter
Convert between bytes, KB, MB, GB, TB, and PB.
Open Calculator →Roman Numeral Converter
Convert between Arabic numbers and Roman numerals.
Open Calculator →Height Converter
Convert height between feet/inches and centimeters.
Open Calculator →Density Calculator
Calculate density, mass, or volume given the other two.
Open Calculator →Dice Roller
Roll virtual dice for games, decisions, or random number generation.
Open Calculator →Love Calculator
A fun tool to calculate the compatibility percentage between two names.
Open Calculator →Tip Calculator
Calculate the tip amount and split the bill among multiple people.
Open Calculator →Sleep Calculator
Find the best times to wake up or go to bed based on sleep cycles.
Open Calculator →Tire Size Calculator
Compare tire sizes and calculate diameter, circumference, and speedometer error.
Open Calculator →Password Generator
Generate strong, random passwords with customizable options.
Open Calculator →Shoe Size Converter
Convert shoe sizes between US, UK, EU, and CM.
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