Free Online Calculators for Nigeria
250+ calculators built for Nigerians — salary, tax, JAMB scores, loans, health, business and more. Fast. Accurate. Free.
🔥 Popular Calculators
Nigeria Salary Calculator
Calculate your take-home pay after PAYE tax, pension, NHF and NHIS deductions
PAYE Tax Calculator 2026
Calculate Pay As You Earn tax under the new Nigeria Tax Act 2025 brackets
Loan Calculator
Calculate monthly payments, total interest and amortization schedule for any loan
Mortgage Calculator Nigeria
Calculate monthly mortgage payments with NHF and commercial bank rates
Pension Calculator Nigeria
Calculate your pension contributions and projected retirement fund under CPS
Naira Currency Converter
Convert NGN to USD, GBP, EUR and 50+ currencies at CBN and parallel market rates
Car Import Duty Calculator
Calculate customs duty, levy, surcharge and VAT for importing tokunbo cars
VAT Calculator Nigeria
Calculate 7.5% Value Added Tax on goods and services in Nigeria
Percentage Calculator
Calculate percentages, percentage change, and percentage of a number
JAMB Score Calculator
Calculate your JAMB UTME score and check university cut-off marks
JAMB Aggregate Score Calculator
Calculate weighted aggregate for university admission using JAMB, Post-UTME and O'Level
WAEC Grade Calculator
Calculate your WAEC grades and check if you meet admission requirements
CGPA Calculator Nigeria
Calculate your Cumulative Grade Point Average on 4.0 or 5.0 scale
BMI Calculator
Calculate your Body Mass Index and check if your weight is healthy
Calorie Calculator
Calculate daily calorie needs based on your age, weight, height and activity
Nigerian Food Calorie Calculator
Find calories in jollof rice, fufu, egusi, amala, pounded yam and 100+ Nigerian foods
Pregnancy Due Date Calculator
Calculate your due date, trimester timeline and week-by-week milestones
Age Calculator
Calculate exact age in years, months, days from date of birth
Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms and more
Fraction Calculator
Add, subtract, multiply and divide fractions with step-by-step solutions
Quadratic Equation Solver
Solve quadratic equations with step-by-step workings using the formula
Business Profit Calculator
Calculate gross and net profit from revenue and expenses
Length Converter
Convert between meters, feet, inches, kilometers, miles and more
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin
Land Measurement Converter Nigeria
Convert between plots, acres, hectares and square meters (Nigerian standard)
Electricity Bill Calculator Nigeria
Calculate your electricity bill based on DISCO tariff band and usage
Solar Panel Calculator Nigeria
Calculate solar system size, cost and ROI for your home or business
Generator Fuel Cost Calculator
Calculate daily, weekly and monthly fuel costs for your generator
Rent Calculator Nigeria
Calculate annual rent, agency fees, agreement costs and total move-in cost
Building Cost Calculator Nigeria
Estimate cost of building a house in Nigeria by number of rooms and location
Date Calculator
Calculate days between dates, add/subtract days from a date
Data Plan Calculator Nigeria
Compare MTN, Airtel, Glo, 9mobile data plans and find the cheapest
Jollof Rice Calculator
Calculate exact ingredients for perfect jollof rice for any number of guests
Owambe Food Calculator
Calculate food quantities for Nigerian parties - rice, meat, drinks per guest
₦ Finance View all →
Nigeria Salary Calculator
Calculate your take-home pay after PAYE tax, pension, NHF and NHIS deductions
PAYE Tax Calculator 2026
Calculate Pay As You Earn tax under the new Nigeria Tax Act 2025 brackets
Loan Calculator
Calculate monthly payments, total interest and amortization schedule for any loan
Mortgage Calculator Nigeria
Calculate monthly mortgage payments with NHF and commercial bank rates
Compound Interest Calculator
See how your money grows with compound interest over time
Savings Goal Calculator
Calculate how much to save monthly to reach your financial goal
🎓 Education View all →
JAMB Score Calculator
Calculate your JAMB UTME score and check university cut-off marks
JAMB Aggregate Score Calculator
Calculate weighted aggregate for university admission using JAMB, Post-UTME and O'Level
WAEC Grade Calculator
Calculate your WAEC grades and check if you meet admission requirements
CGPA Calculator Nigeria
Calculate your Cumulative Grade Point Average on 4.0 or 5.0 scale
GPA Calculator
Calculate semester GPA from course grades and credit units
NECO Grade Calculator
Calculate NECO grades and check qualification for university admission
❤️ Health & Fitness View all →
BMI Calculator
Calculate your Body Mass Index and check if your weight is healthy
Calorie Calculator
Calculate daily calorie needs based on your age, weight, height and activity
Nigerian Food Calorie Calculator
Find calories in jollof rice, fufu, egusi, amala, pounded yam and 100+ Nigerian foods
Pregnancy Due Date Calculator
Calculate your due date, trimester timeline and week-by-week milestones
Ovulation Calculator
Track your fertile window and predict ovulation date
Ideal Weight Calculator
Find your ideal weight range based on height, age and body frame
📐 Math & Science View all →
Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms and more
Fraction Calculator
Add, subtract, multiply and divide fractions with step-by-step solutions
Percentage Change Calculator
Calculate percentage increase or decrease between two values
Quadratic Equation Solver
Solve quadratic equations with step-by-step workings using the formula
Simultaneous Equation Solver
Solve systems of 2 or 3 linear equations with step-by-step solutions
Pythagorean Theorem Calculator
Calculate the missing side of a right triangle using a² + b² = c²
💼 Business View all →
Business Profit Calculator
Calculate gross and net profit from revenue and expenses
Invoice Calculator Nigeria
Generate invoices with VAT, WHT and total calculations
CAC Registration Cost Calculator
Calculate business registration costs with CAC in Nigeria
ROI Calculator
Calculate Return on Investment for business decisions and projects
Employee Cost Calculator Nigeria
Calculate total cost of hiring an employee including pension, NHIS, NHF
Product Pricing Calculator
Set optimal prices based on cost, markup and competitor analysis
🔄 Conversion View all →
Length Converter
Convert between meters, feet, inches, kilometers, miles and more
Weight Converter
Convert between kg, lbs, grams, ounces, stones and tons
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin
Speed Converter
Convert between km/h, mph, m/s, knots and mach
Area Converter
Convert between square meters, hectares, acres, plots and square feet
Volume Converter
Convert between liters, gallons, cups, tablespoons and more
⚡ Energy & Utilities View all →
Electricity Bill Calculator Nigeria
Calculate your electricity bill based on DISCO tariff band and usage
Solar Panel Calculator Nigeria
Calculate solar system size, cost and ROI for your home or business
Generator Fuel Cost Calculator
Calculate daily, weekly and monthly fuel costs for your generator
Solar vs Generator Calculator
Compare total cost of solar installation vs running a generator over time
Inverter & Battery Calculator
Size your inverter and battery bank based on appliance load
Electricity Unit Calculator
Calculate how many units (kWh) your appliances consume
🏠 Real Estate View all →
Rent Calculator Nigeria
Calculate annual rent, agency fees, agreement costs and total move-in cost
Property Value Estimator
Estimate property market value based on location, size and features
Building Cost Calculator Nigeria
Estimate cost of building a house in Nigeria by number of rooms and location
Land Size Calculator
Calculate land area from measurements and convert between plots and hectares
Rental Yield Calculator
Calculate annual rental yield and ROI on property investment
Paint Calculator
Calculate how many liters of paint needed for walls and ceilings
📅 Everyday Life View all →
Date Calculator
Calculate days between dates, add/subtract days from a date
Time Calculator
Add, subtract and convert time in hours, minutes and seconds
Countdown Calculator
Calculate days until holidays, events and important Nigerian dates
Age Difference Calculator
Calculate the age difference between two people in years, months and days
Love Calculator
Fun love compatibility calculator - enter two names to check compatibility
Lucky Number Calculator
Find your lucky numbers based on your date of birth
🍲 Food & Cooking View all →
Recipe Scaler
Scale Nigerian recipes up or down for any number of servings
Jollof Rice Calculator
Calculate exact ingredients for perfect jollof rice for any number of guests
Owambe Food Calculator
Calculate food quantities for Nigerian parties - rice, meat, drinks per guest
Rice to Water Ratio Calculator
Get the perfect rice to water ratio for different types of rice
Meat Per Person Calculator
Calculate how much meat to buy for parties and family meals
Drinks Calculator for Parties
Calculate how many bottles of drinks to buy for your event