Calculator Tools
Quick, accurate calculators for everyday maths, dates and academic results.
Percentage Calculator
Six percentage calculators: X% of Y, find the whole, percentage change, add/subtract percentage, and marks-to-percentage with automatic WAEC grade.
Age Calculator
Calculate exact age in years, months, days, hours and minutes. Zodiac sign, leap years count, next birthday countdown and reverse age-to-birth-year calculator.
Date Difference Calculator
Calculate days between two dates with weekdays, weekends and business days. Skip Nigerian public holidays. Add or subtract days to find a future or past date.
JAMB Aggregate Calculator
Calculate JAMB aggregate for UNILAG, UI, OAU, UNN, ABU and UNIBEN. Post-UTME included. Compare with cutoff marks and see admission likelihood.
WAEC Grade Calculator
Calculate WAEC aggregate, credits and GPA from your scores or grades. Course eligibility checker for 18 courses. NECO and GCE supported. WES GPA conversion table.
Random Number Generator
Generate random integers, decimals, lists or dice rolls
Roman Numeral Converter
Convert numbers to Roman numerals and back
Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin and more
Discount Calculator
Calculate sale prices, savings and discount percentages
Fraction Calculator
Add, subtract, multiply and divide fractions with steps
Quadratic Equation Solver
Solve ax²+bx+c=0 with discriminant and step-by-step working
Trigonometry Calculator
Calculate sin, cos, tan and all trig functions
Scientific Notation Converter
Convert numbers to and from scientific notation
LCM & HCF Calculator
Find lowest common multiple and highest common factor
Weight Converter
Convert between kg, lbs, stone, ounces and more
Length & Distance Converter
Convert between metres, miles, feet, inches and more
Data Storage Converter
Convert bytes, KB, MB, GB, TB in SI and IEC standards
Work Hours Calculator
Calculate hours worked from start and end times
Sleep Cycle Calculator
Find the best sleep and wake times based on sleep cycles
Running Pace Calculator
Calculate running pace, finish time or distance
Calories Burned Calculator
Calculate calories burned during 30+ exercise activities